Oyster shucking clamping device and oyster shucking method

Abstract

The oyster clamp includes a base element having a recess for receiving an oyster to be opened. A lip coupled to the base element rests over and abuts the edge of a work surface on which the oyster clamp is placed, and a plurality of rubber feet are coupled to the underside of the base element. A backstop is secured to the base element to prevent the oyster from exiting the back of the oyster clamp during use. An oyster clamping element is operably coupled to the handle and base element, such that manipulation of the handle causes the clamping element to press the oyster against the base element.

Description

[Technical Field]

[0001] This application claims the benefit of U.S. Patent Application No. 17 / 366,300, filed July 2, 2021, and further claims priority to U.S. Provisional Application No. 63 / 064,211, filed August 11, 2020, which is incorporated by reference in its entirety as if fully set forth herein. [Background technology]

[0002] The process of opening oysters or other bivalve mollusks is commonly referred to as "shucking." Oysters and similar shellfish typically have two half-shells called valves that are held together at a hinge, with a visible seam where the two shell halves meet. Typically, a knife or thin blade is inserted into the seam and used to pry the oyster open by separating each of the oyster's opposing shell halves. However, because oysters are sometimes shucked while alive, the oyster may resist and block easy insertion and separation of its shell halves. Therefore, the knife blade may need to be forcibly inserted between the shell halves. In such cases, the use of a knife that is applied forcefully to open the oyster can lead to injury. In the prior art, various tools have been developed to help users avoid injury during shucking of oysters and other bivalve mollusks.

[0003] Improvements to the prior art in shucking devices may result in less injury, or in a tool that may be easier to use or clean, or that can accommodate a variety of oyster sizes. Improvements have also been made to secure the clamp to a surface, to better protect the user's hands from slippage and injury, to provide a means for better securing the device to a counter or table, and / or to provide a hinge between the rear end of the base and the rear end of the top.

[0004] The prior art includes the following:

[0005] U.S. Patent No. 299,756A. This reference describes an "oyster clamp" for use in shucking oysters. The clamp consists of two parts, which may be made of wood or metal. One of the parts is a lower part that is longer than the upper part, and the two parts are connected at their rear ends by a hinge. The lower part has a recess that is rounded at its inner end and gradually increases in depth from the open front side to form a sloped bottom. The upper part has a similar horseshoe-shaped recess, including sloped sides. The recess fits the shape of the oyster portion to be inserted into the clamp.

[0006] U.S. Patent Application Publication No. 2007 / 0042695A1. This reference describes an "oyster shucking block" having a base including a planar first surface and an arcuate partition attached to the base. The base and partition define an oyster holder that secures the oyster while a user pries the oyster shell open.

[0007] U.S. Patent Application Publication No. 2020 / 0237128A1. This reference describes an "oyster shucking device" having a base including a first recess and a cover connected at an angle to an end of the base, the cover being removably connected or hinged to the base. The cover has a second recess, the first and second recesses being sized and configured to hold an oyster. A user can hold an oyster therein and use a knife to open the oyster while limiting the risk of injury.

[0008] WO2018 / 124966A1. This reference describes an "oyster opening device" having an oyster support channel connected to a support post. A connecting rod having notches on its lower edge is pivotally connected to the support post at a selected one of the notches. A lever is pivotally connected to the end of the connecting rod at an upper lobe, and a shucking blade is connected to the lower lobe of the lever. In use, an oyster is securely placed in the support channel and a user applies a controlled force to a handle at the free end of the lever to cause the shucking blade to pry the oyster open.

[0009] WO2004 / 100730A2. This reference describes a handheld "clam and oyster opener" similar in form and function to a nutcracker. The opener includes a pair of pivotally connected members, one member having a handle and a curved, toothed portion for holding the clam or oyster in place, and the other member having a handle and a smooth bar along which a protruding wedge can slide into position and be locked. The user's hand holds the bivalve in place against the curved, toothed portion while the other hand simultaneously squeezes the handles of both members together, forcing the wedge between the shell halves and forcing them apart. A scoop is attached to the outside of the toothed portion to scrape the meat from the shell.

[0010] No. 9,462,816 B2. This reference describes an "oyster opening device." A handle is pivotally coupled to a spike, which passes through a fixed positioning cylinder. Force applied to the handle forces the spike into the hinge of an oyster held by a user on a grooved surface. The movement of the spike, guided by the positioning cylinder, can accommodate a wide range of oyster sizes without the need to reconfigure or adjust the design of the device.

[0011] U.S. Patent No. 7,785,176 B1. A device for manually forcing open shells during the downward stroke of a reciprocating plunger. The plunger has a long, angled, wedge-shaped blade at its tip. The shell is placed on a non-slip base with its seam parallel to the angle of the taper at the tip. As the plunger descends, it exerts a frictional shear force on the shell, separating and opening the halves, providing access to the meat.

[0012] No. 7,393,270 B2. This reference describes a "reconfigurable shellfish opener" that includes a base and a reconfigurable handle pivotally connected to the base. The device also includes various blades securely coupled to the handle so that selected blades can be positioned in an orientation effective for opening shellfish. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] U.S. Patent No. 299756A [Patent Document 2] US Patent Application Publication No. 2007 / 0042695A1 [Patent Document 3] U.S. Patent Application Publication No. 2020 / 0237128A1 [Patent Document 4] WO2018 / 124966A1 [Patent Document 5] WO2004 / 100730A2 [Patent Document 6] U.S. Patent No. 9,462,816B2 [Patent Document 7] U.S. Patent No. 7,785,176B1 [Patent Document 8] U.S. Patent No. 7,393,270B2 Summary of the Invention [Problem to be solved by the invention]

[0014] Despite such improvements, various drawbacks remain. For example, by providing a hinge between the rear of the clamp's top and the rear of the base, the oyster is not properly secured when positioned between the top and the base. Furthermore, no means may be provided for holding the various parts of the shucker in place to provide uncompromising structural stability. Furthermore, no securing means may be provided to prevent the device from slipping on the work surface on which it is placed during use. Furthermore, the user's hand (the hand not holding the knife or other shucker) typically holds the entire top of the device, thereby exposing the user's non-knife hand to potential injury if the knife slips. [Means for solving the problem]

[0015] The oyster clamp includes a base element having a recess for receiving an oyster to be opened. A lip coupled to the base element rests over and abuts the edge of a work surface on which the oyster clamp is placed, and a plurality of rubber feet are coupled to the underside of the base element. A backstop is secured to the base element to prevent the oyster from exiting the back of the oyster clamp during use. An oyster clamping element is operably coupled to the handle and base element, such that manipulation of the handle causes the clamping element to press the oyster against the base element.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

[0017] The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate disclosed embodiments and / or aspects and, together with the description, explain the principles of the invention, the scope of which is defined by the claims. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 2] FIG. 2 is an exploded perspective view of the oyster clamp shown in FIG. 1. [Figure 3] FIG. 10 is a perspective view of another exemplary embodiment of an oyster clamp. [Figure 4] FIG. 4 is an exploded perspective view of the oyster clamp shown in FIG. 3. [Figure 5A] 10A-10C are diagrams of exemplary variations in backstop construction and configuration. [Figure 5B] 10A-10C illustrate exemplary variations in handle construction and configuration. [Figure 6A] FIG. 10 is a perspective view of another embodiment of an oyster clamp. [Figure 6B] FIG. 10 is a rendering of another embodiment of an oyster clamp. [Figure 7] FIG. 6B is a rear perspective view of another embodiment similar to the embodiment shown in FIG. 6A but having a different hinge configuration. [Figure 8] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 9] FIG. 9 is an exploded perspective view of the oyster clamp shown in FIG. 8. [Figure 10] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 11] FIG. 11 is an exploded perspective view of the oyster clamp shown in FIG. 10. [Figure 12] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 13] FIG. 13 is an exploded perspective view of the oyster clamp shown in FIG. 12. [Figure 14] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 15] FIG. 15 is an exploded perspective view of the oyster clamp shown in FIG. 14. [Figure 16] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 17] FIG. 17 is an exploded perspective view of the oyster clamp shown in FIG. 16. [Figure 18]FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 19] FIG. 19 is an exploded perspective view of the oyster clamp shown in FIG. 18. [Figure 20] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 21] FIG. 21 is an exploded perspective view of the oyster clamp shown in FIG. 20. [Figure 22] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 23] FIG. 23 is an exploded perspective view of the oyster clamp shown in FIG. 22. [Figure 24] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 25] FIG. 25 is an exploded perspective view of the oyster clamp shown in FIG. 24. [Figure 26] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 27] FIG. 27 is an exploded perspective view of the oyster clamp shown in FIG. 26. [Figure 28] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 29] FIG. 29 is an exploded perspective view of the oyster clamp shown in FIG. 28. [Figure 30] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 31] FIG. 31 is an exploded perspective view of the oyster clamp shown in FIG. 30; [Figure 32] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 33] FIG. 33 is an exploded perspective view of the oyster clamp shown in FIG. 32. [Figure 34] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 35] FIG. 35 is an exploded perspective view of the oyster clamp shown in FIG. 34; [Figure 36] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 37] FIG. 37 is an exploded perspective view of the oyster clamp shown in FIG. 36; [Figure 38] FIG. 1 is a perspective view of an exemplary embodiment of an oyster clamp. [Figure 39] FIG. 39 is an exploded perspective view of the oyster clamp shown in FIG. 38. [Figure 40] 1A-1C are perspective views of several illustrative embodiments of oyster opening blades configured as drill bit replacements for power drills. [Figure 41] 41A-41C are side perspective views of two illustrative power drill embodiments suitable for use with one or more of the oyster opening blades shown in FIG. 40. [Figure 42A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 42B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 43A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 43B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 44A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 44B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 45A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 45B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 46A]1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 46B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 47A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 47B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 48A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 48B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 49A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 49B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 50A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 50B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 51A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 51B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 52A]1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 52B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 53A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 53B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 54A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 54B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 55A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 55B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 56A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 56B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 57A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 57B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 58A]1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 58B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 59A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 59B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 60A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 60B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 61A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 61B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 62A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 62B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 63A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 63B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 64A]1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 64B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 65A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 65B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. [Figure 66A] 1-39. FIG. 40 is a perspective view of an exemplary embodiment having the same or similar components as those included in the embodiment shown in FIGS. 1-39, but in a different arrangement. [Figure 66B] 39A-39C are exploded views of exemplary embodiments with the same or similar components included in the embodiments shown in FIGS. DETAILED DESCRIPTION OF THE INVENTION

[0019] It should be noted that the reference numbers in the exploded view ("B") are not relevant to the context of this disclosure and should be disregarded. While multiple exemplary embodiments are shown, it is understood that other embodiments are possible, including the same, similar, or different components. Of course, all such embodiments are deemed to be within the scope of the claimed invention if encompassed by the language of the claims.

[0020] It should be understood that the diagrams and descriptions provided herein may be simplified to depict aspects suitable for a clear understanding of the processes, machines, products, and / or compositions described herein, while excluding, for clarity, other aspects that may be found in typical devices, systems, and methods. Those skilled in the art may recognize that additional and / or other elements and / or steps are desirable and / or necessary to implement the devices, systems, and methods described herein. Because such elements and steps are well known in the art, and because such elements and steps do not facilitate a further understanding of the present disclosure, a discussion of such elements and steps may not be provided herein. However, all such elements, variations, and modifications to the described aspects that would be known to those skilled in the art are considered to be inherently included in the present disclosure.

[0021] It will be readily understood that the components of the present invention, as generally described and illustrated in the figures herein, may be implemented in a variety of different configurations. Accordingly, the exemplary embodiments described and / or illustrated in the accompanying figures are not intended to limit the scope of the invention as defined in the claims, but merely represent selected illustrative embodiments of the invention. The use of the phrases "exemplary embodiments," "some embodiments," or other similar language refers to the fact that specific features, structures, or characteristics described in connection with an embodiment may be included in at least one embodiment of the invention, and does not necessarily refer to the same embodiment or group of embodiments.

[0022] One aspect of the described embodiments that may be modified is the materials of construction that make up the various elements of the embodiments. In general, any suitable materials, in any combination, may be used to make any part of any embodiment. However, it should be noted that presently preferred, but not limiting, exemplary materials may include, for the handle, any sufficiently hard and sturdy wood, plastic, high-density polyethylene (PE), etc. For the knob, natural or artificial stone, metal, or wood, plastic, polyethylene (PE), high-density PE, low-density PE, ceramic, polished cement, etc. may be suitable. For the base, wood, natural or artificial stone, plastic, polyethylene, high-density PE, low-density PE, etc. may be suitable. Additionally, various decorative finishes, such as matte, smooth, polished, speckled, etc., may be used.

[0023] Various embodiments will now be described. These embodiments are provided as teaching examples and are not intended to limit the scope of the invention. While specific details of the embodiments are presented, the embodiments can be modified by changing, supplementing, or eliminating many of the details.

[0024] Turning to FIG. 1 , an exemplary embodiment of an oyster clamp (100) for safely opening ("shucking") oysters and other bivalve mollusks (hereinafter collectively referred to as "oysters" for convenience) is shown. The oyster clamp (100) comprises a metal frame (105) formed from a single sheet of stainless steel or other rigid metal bent into a frame shape to which other elements are secured and which provides greater stability than is found in the prior art. The oyster clamp (100) may be characterized as comprising a lower portion (110) and an upper portion (120). The lower portion (110) comprises a base element (115) having a recess (125) for receiving an oyster to be opened. The lower portion (110) further comprises a lip (130) for securing the oyster clamp (100) along the edge of a work surface, such as a countertop or tabletop. In use, the lip (130) rests over and abuts the edge of a work surface to prevent the oyster clamp (100) from sliding backward when a user applies force to an oyster secured within the oyster clamp (100) using a knife or other opening tool. In some embodiments, the lower portion (110) may further comprise or be configured to accommodate at least one securing mechanism (610, FIG. 6B), such as a securing clamp, which may be, for example, an adjustable bar clamp or an F-clamp. In some embodiments, such a securing clamp may be located on one or both sides of the lip (130) to further secure the oyster clamp (100) to the work surface.

[0025] In some embodiments, the upper end of the securing clamp may be permanently or removably coupled directly to the base element 115. The lower end of the securing clamp may be adjusted to press firmly against the underside of the work surface to hold the oyster clamp 100 securely in place on the work surface. To prevent scratching of the work surface and to prevent the oyster clamp 100 from sliding in any direction, a plurality of rubber feet 118 may be coupled to the underside of the base 115. The rubber feet 118 may be coupled to the underside of the base 115 with adhesive, screws, or the like. In a currently preferred embodiment, the rubber feet 118 are coupled to screws that thread through holes in the frame 105 and into the bottom of the base element 115, thereby securely attaching the base element 115 to the frame 105.

[0026] The upper portion (120) of the oyster clamp includes a wedge (122) coupled to the center of the rear upper surface of the base element (115) as a backstop to assist in properly positioning the oyster to be opened and to prevent the oyster from exiting the back of the oyster clamp (100). In some embodiments, the wedge (122) may have a recess (123) to assist in positioning and securing the oyster. In a presently preferred embodiment, the surface defining the recess is disposed in a plane parallel to the upper surface of the wedge (122). A clamping element (124) is rotatably coupled to the wedge (122) by a hinge (127), which allows the clamping element (124) to rotate about a hinge pin (128). A portion of the hinge is preferably formed by bending a flat piece of frame (105) extending from the top of the frame into a circle (127) through which a hinge pin (128) passes. In some embodiments, the clamping element (124) has a recess (126) in the center of its underside to assist in proper positioning of the oyster and to hold the oyster in place during shucking. The recess in the base element (recess 125), the recess in the wedge (recess 123), and the recess in the clamping element (recess 126) define a cavity (121) for securely holding the oyster. In some embodiments, one or more of the recesses (123), (125), and (126) may have a knurled, barbed, or otherwise conformed surface to further assist in controlling the position of the oyster. The center of recess (123) is located directly above the center of recess (125) in the base element, and recess (125) narrows gradually toward the lower tip of recess (123), such that small oysters are held securely in place between recess (123) and the narrowed portion of recess (125), while larger oysters are positioned within recess (125) against the front face of backstop (122).

[0027] In some embodiments, the top surface of the backstop 122 and the portion of the frame adjacent to the top surface may be configured to form an angle between 10 and 50 degrees with the rear of the top surface of the base element 115. In a presently preferred embodiment, the angle between the top surface of the backstop 122 where it meets the rear of the base element 115 and the rear of the base element 115 is 30 degrees, and the bottom of the recess 123 is disposed in a plane parallel to the plane of the top surface of the backstop 122. The clamping element 124 further includes a handle 129 that a user can pull forward to press the clamping element 124 against an oyster (or other shellfish). The handle 129 may be permanently attached to the clamping element 124 using adhesives, screws, etc., or may be incorporated directly into the hinged element 124 as a single piece. In a presently preferred embodiment, hinged element (124) is removably coupled to handle (129) so that it can be replaced if it becomes excessively worn or deformed through use.

[0028] Figure 2 is an exploded perspective view of the kaki clamp shown in Figure 1, where like parts are designated by like reference numerals. It should be understood that the arrangement of parts shown is for illustrative purposes only, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention.

[0029] In use, the oyster clamp (100) is placed on a work surface, such as a tabletop or countertop, with the lip (130) abutting the edge of the work surface. In some embodiments, one or more fastening devices, such as a bar clamp or F-clamp (FIG. 6B, 610), may be used to securely fasten the oyster clamp (100) to the work surface. The oyster is placed within the recess (125) of the base element (115) and preferably rests against the recess (123) of the backstop (122) behind the recess (125) of the base element. The user holds the oyster within the cavity (121) and pulls down on the handle (129), causing the clamping element (124) to rotate about the hinge pin (128) of the hinge (127), applying pressure to the oyster while holding it firmly within the cavity (121). The backstop (122) and clamping element (124) are preferably configured so that when an oyster is secured, the bottom of the clamping element (124) tilts slightly downward toward the front of the oyster clamp (100), creating a force that has a component pushing the oyster toward both the base element (115) and the backstop (122).

[0030] The user holds an oyster-opening tool, such as a knife, with one hand (the "tool hand") while applying sustained downward pressure to the handle (129) with the other hand (the "handle hand") to secure the oyster within the cavity (121). The user then inserts the oyster-opening tool between the two halves of the oyster shell, separating the halves and opening the shell. It is advantageous for the user's handle hand to be positioned on the handle high enough above the shell to be safe in case the knife slips during the shucking process.

[0031] It should again be noted that various materials and combinations of materials may be used for various embodiments of the kaki clamp (100). Specifically, materials that may be used for the handle may include various metals, wood, and plastics such as high-density polyethylene (PE), or combinations thereof. Similarly, materials that may be used for the knob may include natural or artificial stone, various metals or wood, plastic / polyethylene (PE), high-density or low-density PE, ceramic, polished cement, etc., or combinations thereof. Also, suitable materials for use in the base may include wood, stone, artificial stone, plastic / polyethylene, high-density or low-density PE, etc., or combinations thereof.

[0032] Moreover, in general, the described oyster clamp embodiments can be configured or adapted to work with a variety of oysters and other bivalve mollusks of all types and sizes, provided they can fit inside the oyster clamp. For example, the oyster clamp can be used to shuck not only oysters, but also other bivalve mollusks such as clams, scallops, mussels, etc., which are positioned in any orientation that presents a seam between the shell pieces to a user for insertion of a knife or the like between the shell pieces.

[0033] FIG. 3 is a perspective view of another exemplary embodiment of an oyster clamp (300). The oyster clamp (300) also includes a metal frame (305) formed from a single sheet of stainless steel or other rigid metal bent into a frame shape to which other elements are secured, providing greater stability than is found in the prior art. However, this embodiment does not use hinges, so the bracket (305) does not include a hinged portion. As previously mentioned, the oyster clamp (300) may be characterized as including a lower portion (310) and an upper portion (320). The lower portion (310) is substantially similar to the lower portion (110) of the oyster clamp shown in FIG. 1. The lower portion (310) includes a base element (315) having a recess (325) for receiving an oyster (or other bivalve mollusks) to be opened. The lower portion (310) further includes a lip (330) for securing the oyster clamp (300) along the edge of a work surface, such as a countertop or tabletop. In use, the lip (330) overhangs and abuts the edge of the work surface to prevent the oyster clamp (300) from sliding backward when a user applies force to an oyster secured within the oyster clamp (300) using a tool, such as a knife, to open the oyster. In some embodiments, the lower portion (310) may further include or be configured to accommodate at least one securing mechanism (FIG. 6B, 610), such as a securing clamp, which may be, for example, an adjustable bar clamp or an F-clamp. In some embodiments, such a securing clamp may be positioned adjacent one or both sides of the lip (330) to further secure the oyster clamp (300) to the work surface. The securing clamp is operated in a standard manner to secure the oyster clamp to the work surface.

[0034] In some embodiments, the upper end of the securing clamp may be permanently or removably coupled to the base element 315. The lower end of the securing clamp may be adjusted to press firmly against the underside of the work surface to hold the oyster clamp 300 securely in place on the work surface. To prevent scratching of the work surface and to prevent the oyster clamp 300 from sliding in any direction, a plurality of rubber feet 318 may be coupled to the underside of the base 315. The rubber feet 318 may be coupled to the underside of the base element 315 with adhesive, screws, etc. In a currently preferred embodiment, the rubber feet 318 are coupled to screws that thread through holes in the frame 305 and into the bottom of the base element 315, thereby securely attaching the base element 315 to the frame 305.

[0035] The upper portion (320) of the oyster clamp (300) includes a backstop (322) fixedly secured to the center of the rear of the upper surface of the base element (315) to assist in properly positioning the oyster to be opened and to prevent the oyster from exiting the back of the oyster clamp (300). In some embodiments, the backstop (322) may include a recess (327) to assist in positioning and securing the oyster. In a presently preferred embodiment, the surface defining the recess is disposed in a plane parallel to the upper surface of the wedge (322). A clamping element (324) is fixedly coupled to the lower end of the piston (335). In some embodiments, the clamping element (324) includes a recess (326) in the center of its lower surface to assist in properly positioning the oyster and to hold the oyster in place during shucking. The recesses (325, 326, 327) in each of the base element, clamping element, and backstop define a cavity (321) for securely holding the oyster. In some embodiments, one or more of the recesses (325, 326, 327) may have a knurled, barbed, or otherwise conformed surface to further assist in controlling the position of the oyster. In some embodiments, the rear of the backstop (322) and the rear of the base element (315) may form an angle in the range of 10 to 50 degrees. In a currently preferred embodiment, the angle between the top surface of the backstop (322) where it meets the rear of the base element (315) and the rear of the base element (315) is 30 degrees, and the bottom of the recess (323) is disposed in a plane parallel to the plane of the top surface of the backstop (322).

[0036] The upper portion (320) of the oyster clamp (300) further includes a shaft (332) fixedly coupled to and extending vertically from the base element (315), providing structural support for much of the remainder of the upper portion (320). The upper end of the shaft (332) is rigidly coupled to the lower end of an elbow (340). The upper end of the elbow (340) includes a tubular guide (345) through which the shaft of the piston (335) slides. This embodiment utilizes a rack-and-pinion system to apply vertical pressure to the top of an oyster secured within the oyster clamp. Specifically, the piston (335) has regularly spaced notches (337) on one side as a rack. In the figure, two views of the same piston are shown (as indicated by the dashed lines), with the view of the piston on the left rotated to reveal the notch (337), which is not visible in the view of the piston on the right. The lower end of the piston (335) is fixedly coupled to the clamping element (324). The upper portion (320) also includes a handle (350) attached to the elbow (340) via a pivot assembly (355). The pivot assembly (355) includes a gear with teeth (357) as a pinion that engages the notch (337) on the piston (335). When the handle is pressed around the pivot assembly (355), the rack and pinion causes the piston (335) to move up and down along with the clamping element (324). A cap (360) may be coupled to the upper end of the piston (335).

[0037] In use, the oyster clamp (300) is placed on a work surface, such as a tabletop or countertop, with the lip (330) abutting the edge of the work surface. In some embodiments, one or more fastening devices, such as a bar clamp or F-clamp (610, FIG. 6B), may be used to secure the oyster clamp (300) to the work surface. The handle (350) is rotated to raise the clamp element (324). The rotated handle is preferably positioned to extend upward for ease of operation. The oyster is positioned on the base element (315) toward the rear of the recess (325) and preferably rests against the recess (326) in the backstop (322) behind the recess (325) in the base element. A user holds an oyster in cavity (321) and pulls handle (350) to lower clamping element (324), thereby applying pressure to the oyster and holding it securely in cavity (321). While one hand (the "handle hand") applies sustained pressure to handle (350) to push clamping element (324) downward, the user holds an oyster-opening tool, such as a knife, with the other hand (the "tool hand"). The user inserts the tool between the two halves of the oyster shell to separate the halves and open the shell. It is advantageous for the user's handle hand to be positioned on the handle high enough above the cavity in a safe position in case the knife slips during the shucking process. In some embodiments, the recesses (325, 326, 327) in the base element (315), clamping element (324), and backstop (322), respectively, may include grooves, barbs, etc. to further secure the oyster and prevent it from slipping. In some embodiments, the bottom of the clamping element (324) is positioned to slope downward toward the front of the oyster clamp (300), creating a force that has a component pushing the oyster toward both the base element (315) and the backstop (322).

[0038] Figure 4 is an exploded perspective view of the kaki clamp (300) shown in Figure 3, and the components and their relationships to one another, as well as their purpose and function, will be apparent from viewing in light of the above description. It should be understood that the arrangement of components shown is illustrative only, and that other arrangements of one or more of the components may be used without departing from the scope of the invention.

[0039] Exemplary modifications in configuration and construction can include the base element, backstop, clamping elements, and handle, which can be made of or include any suitable solid material, such as, without limitation, wood, hard plastic, stainless steel, etc. Additionally, comparative configurations of various exemplary alternative component configurations are shown in FIGS. 5A and 5B, which depict alternative backstops and handles, respectively. With regard to the backstop, the one on the left in FIG. 5A is used in the embodiment shown in FIG. 7, and the one on the right in FIG. 5A is used in the embodiment shown in FIG. 6A. In FIG. 6A, the portion of the hinge (633) into which the hinge pin is inserted is integrated into a single piece that includes the handle (650) and the clamping elements 624. FIG. 7 is similarly configured. However, in FIG. 6A, the other part of the hinge (634) into which the hinge pin is inserted is integrated into the structural frame (as shown by item 105 in FIG. 2). In contrast, in FIG. 7, hinge component (734) protrudes from plate (703), which is screwed to the top of backstop (722). This same handle used in both FIGS. 6A and 7 is shown on the left side of FIG. 5B as an exemplary composite handle. In contrast, the center view (exploded view) and right view (assembled view) of FIG. 5B show a differently configured handle assembly, including a sieve clamping element (524) threaded into handle (550) having hinge component (533). In particular, screw (534) holding clamping element (524) to the bottom of handle (550) can be sized to couple sieve clamping element (524) to the bottom of handle (550) without penetrating completely through the bottom of the handle. Of course, other variations of these and other components are possible. Similar types of configuration modifications and adaptations are also possible for components of other embodiments.

[0040] FIG. 6A is a perspective view of an exemplary embodiment substantially similar in form and function to the embodiment shown in FIG. 1. One difference is that the clamping element, knob, and hinge components are formed as a single unit, as described above. Furthermore, a thicker panel (630) is used instead of a thin lip. A pair of recesses (602) for positioning the securing clamps that secure the clamp (600) along the edge of the work surface are shown on the top surface of the base on either side of the panel (630). Such a setup is shown in FIG. 6B, where two securing clamps (610) are shown with their upper ends pressed into their respective recesses from above and their lower ends pressed against the underside of the work surface from below. Of course, other configurations are possible without departing from the scope of the present invention. For example, the upper ends of the clamps may be adapted to be permanently attached to the front portion of the base element.

[0041] FIG. 7 is a perspective view of an embodiment substantially similar to the embodiment of FIG. 6A. However, the hinge configuration is different, including a half hinge (703) that is not part of the frame but instead is coupled to the top surface of the backstop (722). Again, this illustrates that variations in the configuration and structure of the oyster clamp (700) can be made without significantly affecting the functionality of the associated embodiment. Similarly, the exemplary embodiments described below generally use knobs connected to the clamping elements via hinges, or handles that squeeze directly under the clamping elements during operation, to apply pressure to the oyster and hold it in place during shucking. In either case, the hand grasping the knob or handle is kept a safe distance from the oyster-opening tool during shucking to prevent injury if the tool slips. Additionally, some embodiments are configured so that pressure from the oyster clamping elements is applied proximal to the center of the oyster, minimizing the possibility of the oyster slipping into or out of the oyster clamp.

[0042] FIG. 8 is a perspective view of another embodiment, and FIG. 9 is an exploded view of the embodiment of FIG. 8. The lower part is substantially similar to that of the previous embodiment, comprising a metal frame (905) formed from a single piece of stainless steel or other rigid metal cut and bent into the shape of the frame, to which other elements, such as a base element (915), are fixed, and the frame provides excellent structural stability. However, the upper part is different, comprising a pair of shafts (920) fixedly connected to and extending perpendicularly from the base element (915). Springs (925) are connected to the tops of the shafts. The upper part also incorporates a so-called floating sleeve, comprising a pair of tubes (930) each slidingly connected over one of the shafts (920). The lower end of each tube (930) is fixedly connected to a cross brace (945), which is connected to the oyster clamp element (924), as indicated by the dotted lines. The handle (950) has two ends, each fixedly coupled to the upper end of a respective tube (930). In operation, the user simply lifts the handle (950), places the oyster against the backstop and into the recess in the base, and continues to apply downward pressure to the handle while pressing down on the handle with one hand to secure the oyster and manipulating the oyster opener with the other. The hand on the handle remains a safe distance from the oyster opener, preventing injury if the tool slips. Once complete, the downward pressure on the handle is released and a spring pushes the handle upward, releasing the oyster.

[0043] When assembled together, the handle 950, tube 930, cross brace 945, and oyster clamping element 924 form a floating sleeve 960 that can be slid off the rest of the oyster clamp 900 and replaced with another floating sliding sleeve better suited to the next job at hand. Thus, the oyster clamp 900 can be easily reconfigured by removing and replacing the floating sliding sleeve 960. This feature is useful, for example, when changing the type of shellfish being shucked, such as from one size (e.g., small oysters) to another size (e.g., giant oysters) or from one type of bivalve shellfish (e.g., oysters) to another type having a different general shape (e.g., clams). Changing the floating sleeve changes the oyster clamping element (924) from a configuration suitable for a first shucking operation to a configuration suitable for a second shucking operation for opening a different type of mollusk.

[0044] Figure 9 is an exploded perspective view of the kaki clamp shown in Figure 8. It should be understood that the arrangement of parts shown is merely exemplary, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention. The arrangement, function, and purpose of the elements shown will be apparent upon inspection.

[0045] Figure 10 is a perspective view of yet another illustrative embodiment 1100. The lower portion is again substantially similar to that of the previously described embodiment, comprising a frame 1105, a base element 1115, and a backstop 1122. However, the upper portion differs, comprising a single shaft 1120 fixedly coupled to and extending perpendicularly from the base element 1115, the shaft 1120 coupled at its upper end to a spring 1125. The upper portion also comprises a tube 1130 that slides over the shaft 1120, the lower end of the tube 1130 being fixedly coupled to a brace 1145 to which the oyster clamping element 1124 is coupled. The upper end of the tube 1130 is fixedly coupled to a handle 1150 via a connector 1140. In this embodiment, shaft 1120 and tube 1130 are configured to have complementary shapes that allow the tube to slide vertically on the shaft but not rotate around it. For example, the shaft and tube may both have a snug-fitting semicircular cross-section (as shown), an elongated oval cross-section, a rectangular cross-section, etc. In operation, a user places an oyster into the recess in the base against backstop 1122, depresses handle 1150 with one hand to secure the oyster, and operates the oyster opener with the other.

[0046] Similar to the embodiment of FIG. 8, handle 1150, tube 1150, brace 1145, and oyster clamping element 1124, when assembled, form floating sleeve 1160, which can be slid off the rest of oyster clamp 1100 and replaced with another floating sleeve better suited to the next job at hand. Thus, oyster clamp 1100 can be easily reconfigured by removing and replacing floating sleeve 1160. This feature is useful when changing the type of shellfish being shucked, for example, from one size (e.g., small oysters) to another size (e.g., giant oysters) or when changing from one type of bivalve shellfish (e.g., oysters) to another type having a different general shape (e.g., clams). Changing the floating sleeve changes the oyster clamping element (1124) from a configuration suitable for a first shucking operation to a different configuration suitable for a second shucking operation to open mollusks of different sizes or shapes.

[0047] Figure 11 is an exploded perspective view of the oyster clamp (1100) shown in Figure 10. As previously mentioned, the arrangement, function, and purpose of the elements shown will be apparent upon inspection. Furthermore, the arrangement of parts shown is merely illustrative, and other arrangements of one or more of the parts may be used without departing from the scope of the present invention.

[0048] Figure 12 is a perspective view of yet another exemplary embodiment. The lower portion is again substantially similar to that of the previously described embodiment. Furthermore, the functionality of the upper portion is somewhat similar to the operation of the embodiment shown in Figures 8 and 10, with a knob (or handle) that can be depressed to secure the oyster within the oyster clamp (1300) and a spring (1330) that pushes the handle back upward, preferably to its original position.

[0049] The upper portion includes a pair of supports 1320, such as shafts or bars, fixedly coupled to and extending vertically from base element 1315. Two brace elements 1345 are coupled horizontally between supports 1320, one at the top of the supports and one proximal to the center of the supports. Each brace element includes a hole in its center, and a spring 1330 is positioned between the holes. A push rod 1355 is inserted through the hole, collar 1365, and spring 1330 and secured to plate 1360. The bottom of plate 1360 is coupled to clamping element 1324, and the top of push rod 1355 is coupled to knob or handle 1350. In operation, a user places an oyster against backstop 1322 and into recess 1325 in the base element, depresses knob 1350 with one hand, compressing spring 1330 to secure the oyster, and continues to apply downward pressure to the knob while manipulating the oyster-opening tool with the other hand. The handle hand remains on knob 1350 at a safe distance from the oyster-opening tool to prevent injury in case the tool slips. Once complete, the downward pressure on the knob is released, and spring 1330 pushes push rod 1355 upward, causing oyster clamping element 1324 to release the oyster.

[0050] Figure 13 is an exploded perspective view of the kaki clamp shown in Figure 12. It should be understood that the arrangement of parts shown is merely illustrative, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention. As in other exploded views, the function and purpose of the shown elements will be apparent upon inspection.

[0051] Figure 14 is a perspective view of yet another illustrative embodiment. The operation of this embodiment is substantially similar to that of the embodiment shown in Figure 12. However, in this embodiment, structural support and guidance for the push rod is provided by the end of frame 1505. Frame end 1545 includes a hole for guiding push rod 1555, and spring 1530 is positioned between the holes. Push rod 1555 is inserted through the hole, collar 1565, and spring 1530 and secured to plate 1560. The bottom of plate 1560 is coupled to oyster clamping element 1524, and the top of push rod 1555 is coupled to knob or handle 1550. In operation, a user places an oyster against backstop 1522 and into recess 1525 in the base element, depresses knob 1550 with one hand to secure the oyster, and continues to apply downward pressure to the knob while manipulating the oyster-opening tool with the other. The handle hand remains on knob 1550 at a safe distance from the oyster-opening tool to prevent injury if the tool slips. Once complete, the downward pressure on the knob is released, causing spring 1530 to push push rod 1555 upward, causing oyster clamping element 1524 to release the oyster.

[0052] Figure 15 is an exploded perspective view of the kaki clamp shown in Figure 14. It should be understood that the arrangement of parts shown is illustrative only, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention. The function and purpose of the elements shown will be apparent upon inspection.

[0053] Figure 16 is a perspective view of yet another illustrative embodiment (1700). The operation of this embodiment is substantially similar to the operation of the embodiment shown in Figure 1. These embodiments differ primarily in the configuration of the hinge and handle, but are otherwise substantially similar in most other aspects of these embodiments. Instead of a single hinge as in Figure 1, there are two hinges, one on each side of the rear of the base element (1715). The components of the hinge (1710) are a post directly connected to the base element (1715), and an upper part (1720) connected to the handle (1750). The upper part (1720) of the hinge includes an extension that can be of any desired length so that, in use, the oyster clamping element (1724) presses down on the center of the oyster being shuckered. Additionally, each hinge post (1710) includes a stem (1725) that prevents the handle from striking the top of the work surface when the perforated clamp (1700) is open. Figure 17 is an exploded perspective view of the perforated clamp shown in Figure 16. It should be understood that the arrangement of parts shown is for illustrative purposes only, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention. The function and purpose of the illustrated elements will be apparent upon inspection.

[0054] FIG. 18 is a perspective view of an embodiment substantially similar to the embodiment shown in FIG. 3, but of a stronger construction intended for commercial use. Generally, the components are thicker, wider, stronger, more durable, and more stable than the embodiment of FIG. 3. FIG. 19 is an exploded perspective view of the kaki clamp shown in FIG. 18. It should be understood that the arrangement of components shown is merely illustrative, and that other arrangements of one or more of the components may be used without departing from the scope of the invention. The function and purpose of the elements shown will again be apparent upon inspection.

[0055] FIG. 20 is a perspective view of yet another exemplary embodiment, and FIG. 21 is an exploded view thereof. The operation of this embodiment is substantially similar to that of the embodiment shown in FIG. 3 and includes structural support similar to that provided by the embodiment of FIG. 14. In FIGS. 20 and 21, the clamping element 2024 is raised and lowered by a rack 2037 and pinion 2057 system, and structural support and guidance for the piston is provided by an appropriately shaped and bent end 2045 of a frame 2005. The frame end 2045 includes a hole for guiding the piston 2035, and a spring 2030 is disposed between the holes. The piston 2035 is inserted through a collar 2065, a hole in the frame end 2045, and the spring 2030, and is secured to a plate 2060. The bottom of the plate 2060 is coupled to the oyster clamping element 2024, and the top of the piston 2035 is coupled to the cap 2070. The pinion 2057 is operably coupled to the handle 2050. In operation, a user places an oyster in the recess 2025 of the base element against the backstop 2022 and then rotates the handle 2050 with one hand to lower the oyster clamping element 2024, thereby compressing the spring 2030 and securing the oyster. The user continues to apply pressure to the handle with one hand while operating the oyster opener with the other. The hand on the handle remains on the handle 2050 at a safe distance from the oyster opener to prevent injury if the tool slips. Once complete, handle 2050 is released or rotated in the opposite direction to raise piston 2035, causing oyster clamping element 2024 to release the oyster. Spring 2030 also pushes piston 2035 upward.

[0056] It should be understood that the arrangement of parts shown is illustrative only, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention. The function and purpose of the shown elements will be apparent upon inspection.

[0057] FIG. 22 is a perspective view of yet another illustrative embodiment, and FIG. 23 is an exploded view thereof. The operation of this embodiment is substantially similar to that of the embodiment shown in FIG. 12. The configuration is also largely the same. However, in this embodiment, instead of two braces between structural supports 2320, a single brace 2345 with a hole in the center is placed between the tops of supports 2320, and a tube 2357 extends downward from the hole. A spring 2330 is positioned between the hole in brace 2345 and the hole in knob 2350. A push rod 2355 is inserted through the spring, the hole in brace 2345, and the tube 2357, and is connected at its lower end to plate 2360. The oyster clamping element 2324 is coupled to the bottom of the plate 2360, and the knob 2350 is coupled to the top of the push rod 2355. The tube ensures that the push rod 2335 is constrained to move up and down linearly with little wobble. The cross-sectional shape of the push rod 2355 matches the shape of the hole in the brace 2345, the tube 2357, and the socket in the plate 2360, within which the lower end of the push rod 2355 is secured. Thus, the oyster clamping element 2324 is prevented from rotating. In operation, the user lifts the knob 2350 with one hand, places the oyster against the backstop 2322 and into the recess 2325 in the base element with the other hand, depresses the knob 2350 with the handle hand to secure the oyster, and operates the oyster opener with the other hand. As in the embodiment of Figure 12, the handle hand remains on the knob at a safe distance from the oyster-opening tool to prevent injury if the tool slips. Once complete, the downward pressure on the knob is released and the spring pushes the knob upward, causing the oyster clamping element to release the oyster.

[0058] FIG. 24 is a perspective view of another exemplary embodiment, and FIG. 25 is an exploded view thereof. The operation of this embodiment is also substantially similar to that of the embodiment shown in FIG. 12 . The configuration is also largely the same. However, in this embodiment, instead of two support members between two structural supports 2320, a single structural support 2420 is provided with two brace members 2445 horizontally connected to only one side. One brace 2445 is located at the top of the support 2420, and the other is located proximal to the center of the support. Each brace element includes a hole in its center, and a spring 2430 is located between the holes. A push rod 2355 is inserted through the hole, collar 2465, and spring 2430, and is secured to a plate 2460 at the bottom end of the push rod 2355. The bottom of plate 2460 is coupled to oyster clamping element 2424, and the top of push rod 2355 is coupled to knob or handle 2450. In operation, a user places an oyster against backstop 2422 and into recess 2425 in the base element, depresses knob 2450 with one hand, compressing spring 2430 to secure the oyster, and continues to apply downward pressure to the knob while manipulating the oyster opener with the other hand. The handle hand remains on knob 2450 at a safe distance from the oyster opener to prevent injury in case the tool slips. Once complete, the downward pressure on the knob is released, causing spring 2430 to push push rod 2355 upward, causing oyster clamping element 2424 to release the oyster.

[0059] It should be understood that the arrangement of parts shown is for illustrative purposes only, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention. As in other exploded view drawings, the function and purpose of the shown elements will be apparent upon inspection.

[0060] Figure 26 is a perspective view of another exemplary embodiment, and Figure 27 is an exploded view thereof. The operation and structure of this embodiment is substantially similar to that of the embodiment shown in Figure 20. However, this embodiment is larger and more sturdily constructed than the embodiment of Figure 20, and may be more suitable for use in a commercial environment.

[0061] Figure 28 is a perspective view of another illustrative embodiment, and Figure 29 is an exploded view thereof. Here, structural support is again provided by a suitably constructed sheet of sturdy, rigid material, such as steel. The sheet is bent to provide structural support (2845). A support member (2855) is coupled to the structural support (2845), and a tubular sleeve (2830) is placed on the support (2855). The sleeve is coupled to the handle (2850) and the support (2835). From there, the support (2835) extends vertically downward to a plate (2860), the bottom of which is coupled to the oyster clamping element (2824). A spring (2833) is coupled to the top of the support (2855). In operation, the user lifts the handle (2850) with their handle hand, places the oyster against the backstop (2822) and into the recess (2825) in the base, pushes down with their handle hand to secure the oyster, and operates the oyster opener with their other hand. The handle hand remains on the handle at a safe distance from the oyster opener to prevent injury in case the tool slips. Once complete, the downward pressure on the handle (2850) is released, and the spring (2833) pushes the handle (2850) upward, causing the oyster clamping element to release the oyster. In a preferred embodiment, this model can be made smaller than other models and is therefore more convenient to store for home use.

[0062] Further, similar to the embodiment shown in FIG. 9, handle 2950, ​​sleeve 2830, support 2835, plate 2860, and oyster clamping element 2824, when assembled, form floating sleeve 2870, which can be slid out of the rest of oyster clamp 2800 and replaced with another floating sleeve better suited to the next job at hand. Thus, oyster clamp 2800 can be easily reconfigured by removing and replacing floating sleeve 2870. This feature is useful when changing the type of shellfish being shucked, for example, from one size (e.g., small oysters) to another size (e.g., giant oysters) or from one type of bivalve shellfish (e.g., oysters) to another type having a different general shape (e.g., clams).

[0063] Figure 29 is an exploded view of the kaki clamp shown in Figure 28. It should be understood that the arrangement of parts shown is illustrative only, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention. The function and purpose of the elements shown will be apparent upon inspection.

[0064] FIG. 30 shows the directions for another exemplary embodiment, and FIG. 31 shows an exploded view thereof. The operation of this embodiment is substantially similar to that of the embodiment shown in FIG. 28. However, in this embodiment, two support members 3055 are coupled to the structural support 3045, and a tubular sleeve 3030 is disposed on the support members 3055. Both sleeves are coupled to a handle 3050 and a pair of supports 3035 having semicircular cross sections. Note that the connection to the handle 3050 is flared as needed to accommodate larger hands. The supports 3035 extend vertically downward to a plate 3060, the bottom of which is coupled to the oyster clamping element 3024. A spring 3033 is coupled to each support 3055 below the sleeve 3030. The two support members 3055, sleeve 3030, and support 3035 make this embodiment more sturdy than the embodiment shown in FIG. 28. As with the embodiment shown in FIG. 28, handle 3050, sleeve 3030, support 3035, plate 3060, and oyster clamping element 3024, when assembled, form floating sleeve 3070, which can be slid out of the rest of oyster clamp 3000 and replaced with another floating sleeve better suited to the next task at hand. Thus, as previously described, oyster clamp 3000 can be easily reconfigured by removing and replacing floating sleeve 3070. This feature is useful, for example, when changing the type of shellfish being shucked, such as from one size (e.g., small oysters) to another size (e.g., giant oysters), or from one type of bivalve shellfish (e.g., oysters) to another type having a different general shape (e.g., clams).

[0065] Figure 31 is an exploded perspective view of the kaki clamp shown in Figure 30. It should be understood that the arrangement of parts shown is illustrative only, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention. The function and purpose of the elements shown will be apparent upon inspection.

[0066] FIG. 32 is a perspective view of yet another illustrative embodiment, and FIG. 33 is an exploded view thereof. The operation and structure of this embodiment are substantially similar to those of the embodiment shown in FIG. 30. However, in this embodiment, structural support and guidance for push rod 3255 is provided by the end of frame 3205. Frame end 3245 includes a hole for guiding push rod 3255, and spring 3233 is positioned perpendicularly between the holes. Push rod 3255 is inserted through the hole, collar 3265, and spring 3233 and secured to plate 3260. The bottom of plate 3260 is connected to oyster clamping element 3224, and the top of push rod 3255 is connected to handle 3250. In operation, the user presses down on the handle (3250) with one hand, compressing the spring (3233) to secure the oyster, and operates the oyster picking tool with the other. The handle hand remains on the handle (3250) at a safe distance from the oyster picking tool to prevent injury if the tool slips. Once complete, the downward pressure on the handle is released, causing the spring (3233) to push the push rod (3255) upward, causing the oyster clamping element (3244) to release the oyster.

[0067] Figure 33 is an exploded perspective view of the kaki clamp shown in Figure 32. It should be understood that the arrangement of parts shown is illustrative only, and that other arrangements of one or more of the parts may be used without departing from the scope of the invention. The function and purpose of the elements shown will be apparent upon inspection.

[0068] FIG. 34 is a perspective view of another exemplary embodiment, and FIG. 35 is an exploded view thereof. The operation and structure of this embodiment are substantially similar to that of the embodiment shown in FIG. 28. As with the embodiment of FIG. 28, handle 3450, sleeve 3430, support 3435, plate 3460, and oyster clamping element 3424, when assembled, form floating sleeve 3470, which can be slid out of the rest of oyster clamp 3400 and replaced with another floating sleeve more suitable for the next type of bivalve shell to be shucked. However, in this embodiment, structural support is provided by a differently configured and bent sheet of metal that does not contact base element 3415. Instead, unlike other embodiments described herein, floating sleeve 3470 or equivalent structure is supported behind and separated from base element 3415. Additionally, sleeve 3430 and support 3435 are spaced further apart and are shorter than in the embodiment of Figure 28. The resulting change in balance and stability characteristics of this embodiment may be preferable for some shucking operations.

[0069] Figure 36 is a perspective view of another exemplary embodiment, and Figure 37 is an exploded view thereof. The operation and structure of this embodiment are substantially similar to those of the embodiment shown in Figure 34, but with a pair of sleeves 3630 and support 3635 that make this embodiment significantly more robust. As with the embodiment of Figure 34, handle 3650, sleeve 3630, support 3635, plate 3660, and oyster clamping element 3624, when assembled, form a floating sleeve 3670 that can be slid off the rest of oyster clamp 3600 and replaced with another floating sleeve more suitable for the next type of bivalve shell to be shucked.

[0070] Figure 38 is a perspective view of another exemplary embodiment, and Figure 39 is an exploded view thereof. This embodiment includes frame supports 3845 extending from the rear of the frame 3805 near the rear corners of the base element 3815. This configuration provides balance and stability characteristics that may be preferable for some shucking operations. Additionally, there is room within the structure 3845 for storing shucking tools and the like.

[0071] Regarding the operability of the oyster clamp 3800, a spring is positioned vertically over a hole in the upper surface of the frame structure 3845, and a guide tube 3857 extends downward from the hole. A push rod 3855 is connected at its top to the handle 2850 and is inserted through the spring 3833, the hole in the structure 3845, and the guide tube 3857, and is firmly connected at its lower end to a plate 3860. The oyster clamping element 3824 is connected to the underside of the plate 3860.

[0072] In summary, the various disclosed embodiments may be characterized by features including hinged versions, rack-and-pinion versions, plunger versions, tube versions, and sleeve versions. The embodiments may also be characterized by the configuration of the connection between the lower and upper parts of the kaki clamp, including a connection extending over the central rear of the base element, a connection extending from the side of the base element, and a connection extending from the back of the base element. There are configurations that may be characterized as having one "stem" or two "stems" between the base element and the handle. Finally, the versions may be characterized as having or not having a particularly robust construction, narrow or wide widths, and with or without a replaceable floating sleeve.

[0073] Oyster shucking tools can come in a variety of shapes and sizes, such as knives or other sharp implements. In some embodiments, the tool can have a powered aspect to enhance its ability to easily open bivalve mollusks secured within the oyster clamp. Powered embodiments can include any suitable type of power source, including a battery, a power source, or the like. In some embodiments, such power tools can apply torque to a blade-like element to rotate the element and open the bivalve mollusks. The applied torque can be controllable to maintain a predetermined default rotation speed or a speed selected by the user. In some embodiments, a portable drill can be used with various sized oyster shucking tools suitable for opening bivalve mollusks of various sizes and shapes.

[0074] FIG. 40 shows perspective views of several exemplary embodiments of oyster opening blades configured for use with a standard portable handheld drill. The blades shown generally taper, but various blade shapes can be used, such as pointed ends, rounded ends, plow-shaped ends, chisel-shaped ends, etc. Additionally, the blades can be made of or include various materials, such as steel, ceramic, hard plastic, etc. While FIG. 40 shows embodiments with male or female shank ends and various sized shanks that can be used with various types of drills, other configurations can be used without departing from the scope of this disclosure. While two exemplary drills are shown in FIG. 41, any similarly configured and capable handheld drill can be used.

[0075] Figures 42-66 show perspective views ("A") and exploded views ("B") of several exemplary embodiments that include the same or similar components as those included in the embodiments shown in Figures 1-39 in a variety of different arrangements. Note that the reference numerals in the exploded view ("B") are not relevant to the context of this disclosure and may be disregarded. While several exemplary embodiments are shown, it is understood that other embodiments are possible that include the same, similar, or different components. Of course, all such embodiments are considered to be within the scope of the claimed invention if encompassed by the language of the claims.

[0076] While the present invention has been described and illustrated in an exemplary form with a certain degree of particularity, it should be noted that the description and illustration are by way of example only. Numerous changes in the details of construction, combination, and arrangement of parts and steps may be made without departing from the scope of the invention. It is therefore understood that such changes are inherent in the disclosure.

[0077] The present invention is not limited except by the appended claims and the limitations expressly set forth therein. The scope of the claims should be interpreted as broadly as the prior art permits. It should also be noted that all elements of all claims can be combined with each other in any possible combination, even if that combination is not expressly claimed.

Claims

1. a lower portion, and upper part 1. A kaki clamp comprising: a base element having a recess for receiving an oyster to be opened; A lip coupled to the base element configured to rest over and abut the edge of a work surface on which the persimmon clamp is placed, thereby preventing the persimmon clamp from sliding backward when a force is applied to a persimmon held within the persimmon clamp; a plurality of fixed feet coupled to the underside of the base element to prevent scratches on the work surface and to prevent the kaki clamp from sliding in any direction on the work surface by friction between the work surface and the base element; wherein the upper portion comprises: a backstop fixedly coupled to or extending from the base element to assist in positioning an oyster to be opened and to prevent the oyster from exiting behind the oyster clamp in use, the backstop having a recess for receiving the oyster; a clamping element operably coupled to the base element, the clamping element having a recess for controlling the position of the clamp when the clamp is in use; a handle operably coupled to the oyster clamping element for causing the oyster clamping element to press the oyster against the base element in use; Including, oyster clamps.

2. 2. The oyster clamp of claim 1, further comprising a plurality of notches on the surface of a recess in at least one of the base element, the backstop, and the oyster clamping element, the notches controlling the position of the oyster within the oyster clamp.

3. a hinge and hinge pin coupled between the base element and the clamping element, the clamping element being arranged to rotate about the hinge pin; The oyster clamp of claim 1 further comprising:

4. a rack and pinion coupled between the base element and the oyster clamping element, the rack and pinion positioned such that the oyster clamping element exerts vertical downward pressure when a handle operably coupled to the pinion is rotated about a central axis of the pinion; The oyster clamp of claim 1 further comprising:

5. a tube coupled between the base element and the oyster clamping element, the tube being configured to constrain the oyster clamping element to move vertically and prevent it from rotating about a vertical axis; The oyster clamp of claim 1 further comprising:

6. a sleeve coupled between the base element and the oyster clamping element, the sleeve being arranged so that a first assembly including the sleeve, the oyster clamping element, and a handle is removable and replaceable with a replacement assembly having a different oyster clamping element but otherwise identical to the first assembly. The oyster clamp of claim 1 further comprising:

7. a structural element extending upward from the central rear of the base element to provide stability to the clamping element and a handle operably coupled to the clamping element; The oyster clamp of claim 1 further comprising:

8. a structural element extending upward from the rear of the base element to provide stability to the clamping element and a handle operably coupled to the clamping element; The oyster clamp of claim 1 further comprising:

9. a structural element extending upward from a side of the base element to provide stability to the clamping element and a handle operably coupled to the clamping element; The oyster clamp of claim 1 further comprising:

10. a structural element that provides stability to the clamping element and a handle operably coupled to the clamping element, the structural element including only one stem; The oyster clamp of claim 1 further comprising:

11. a structural element that provides stability to the clamping element and a handle operably coupled to the clamping element, the structural element including only two stems; The oyster clamp of claim 1 further comprising:

12. a cut and bent sheet of metal as a frame; a base element attached to the frame; a backstop disposed between the base element and the frame and attached to at least one of the base element and the frame; The oyster clamp of claim 1 further comprising:

13. The oyster clamp of claim 12, wherein a lower end of the frame forms the lip.

14. a structural element that provides stability to the clamping element and a handle operably coupled to the clamping element, the structural element including only one stem; The oyster clamp of claim 1 further comprising:

15. a structural element that provides stability to the clamping element and a handle operably coupled to the clamping element, the structural element including only two stems; The oyster clamp of claim 1 further comprising:

16. 2. The oyster clamp of claim 1, wherein the bottom of the oyster clamping element is positioned so as to slope downward toward the front of the oyster clamp so that when the oyster clamping element is pressed down by operating the handle, a force is created on the oyster that has a component pushing the oyster toward both the base element and the backstop.

17. Further equipped with hinges, The hinge halves are screwed onto the top surface of the backstop; and formed at the upper end of the frame One of the 13. The oyster clamp of claim 12.

18. a handle coupled to a metal plate, the metal plate having an edge cut in the shape of the other half of the hinge; The oyster clamping element is connected to the bottom of the metal plate; and a hinge pin coupled between the two halves of the hinge; Furthermore, the two halves of the hinge being pivotally coupled to one another by the hinge pin; the handle rotates about the hinge pin to contact the backstop and press the oyster clamping element against an oyster disposed within a recess in the base element; 18. The oyster clamp of claim 17.

19. a shaft fixedly coupled to and extending perpendicularly from the base element; an elbow having a lower end and an upper end, the lower end fixedly coupled to the shaft and the upper end including a tubular guide; a piston having a lower end and an upper end, slidably disposed within the tubular guide, the lower end of the piston fixedly coupled to the oyster clamping element, the upper end of the piston coupled to a cap, the piston having a notch as a rack on one side between its upper end and its lower end; a gear as a pinion having teeth that engage the rack on the piston; a pivot assembly including the pinion mounted between the lower end of the elbow and its upper end; a handle attached to the pivot assembly and operably coupled to the pinion; Furthermore, When the handle is pushed to rotate around the central axis of the pinion, the gear teeth of the pinion engage with the rack, causing the piston to move up and down together with the oyster clamping element.

2. The oyster clamp of claim 1.

20. a pair of shafts fixedly coupled to and extending perpendicularly from the base element; two springs each fixedly coupled to the upper end of each shaft; a pair of tubes having lower and upper ends, each tube slidably disposed on the shaft and spring, the lower end of each tube fixedly coupled to an end of the oyster clamping element, and the upper end of each tube coupled to an end of a handle; The oyster clamp of claim 1 further comprising:

21. 21. The oyster clamp of claim 20, wherein a first floating assembly including the pair of tubes, the oyster clamping element, and the handle can be replaced with a second floating assembly having a different oyster clamping element.

22. a shaft fixedly coupled to and extending perpendicularly from the base element; a tube having a lower end and an upper end, the tube being slidably disposed on the shaft, the lower end of the tube being fixedly coupled to the oyster clamping element and the upper end of the tube being fixedly coupled to the handle; Furthermore, the shaft and the tube are configured to have complementary shapes that allow the tube to slide vertically on the shaft and prevent the tube from rotating about the shaft; 2. The oyster clamp of claim 1.

23. 23. The oyster clamp of claim 22, wherein the tube, the oyster clamping element, and the handle, when coupled together as a first floating assembly, can be lifted from the remainder of the oyster clamp and replaced with a second floating assembly having a different oyster clamping element but otherwise identical to the first floating assembly.

24. a pair of shafts as supports fixedly coupled to and extending perpendicularly from the base element; a first brace element coupled horizontally between the tops of the supports; a second brace element coupled horizontally between the supports proximal to the center of the supports; 10. The oyster clamp of claim 1 further comprising: Each brace element includes a hole in its center, and the oyster clamp further includes: a spring disposed between the holes; Color and a push rod passing through the hole, the collar, and the spring; a plate fixed to the lower end of the push rod; Equipped with The oyster clamping element is coupled to the bottom side of the plate; The upper end of the push rod is connected to the handle.

2. The oyster clamp of claim 1.

25. a push rod connected at its upper end to the handle and at its lower end to the oyster clamping element; A spring and Color and Furthermore, the upper end of the frame is cut and bent into the shape of a structural support having holes on its upper and lower surfaces; the spring is disposed between the holes in the upper and lower surfaces of the structural support; the collar is disposed on top of the spring; the push rod is disposed through the hole, the collar, and the spring; 13. The oyster clamp of claim 12.

26. The oyster clamp of claim 1 , wherein the feet comprise at least one of rubber and adhesive.

27. 1. A method of operating an oyster clamp, comprising: placing the perforated clamp on the work surface with the lip of the perforated clamp hanging over the edge of the work surface; placing the bivalve mollusks in the recess of the oyster clamp with at least a portion of the seam between the shell pieces facing away from the rear of the oyster clamp; manipulating the handle to cause an oyster clamping element operably coupled to the handle to apply downward pressure to the top of the bivalve mollusks to retain the bivalve mollusks within the oyster clamp; continuously operating the handle to apply downward pressure to the oyster clamping element while opening the bivalve molluscs with the oyster opening tool; Inserting the oyster opening tool into the seam between two of the shell pieces of the bivalve mollusks while using the handle to increase or decrease the pressure of the oyster clamping element pressing against the top of the bivalve mollusks; causing the oyster clamping element to release the bivalve mollusks when the bivalve mollusks are opened; removing the opened bivalve mollusks from the oyster clamp; and A method comprising:

28. 28. The method of claim 27, wherein manipulating the handle is accomplished by rotating the handle about a hinge pin to swing an oyster clamping element secured to the bottom of the handle and cause the oyster clamping element to press against the oyster positioned within the cavity of the oyster clamp.

29. 28. The method of claim 27, wherein operating the handle is accomplished by rotating the handle of the oyster clamp to rotate a pinion having teeth engaging with notches in a rack formed on one side of the piston, the oyster clamping element being fixed to the lower end of the piston, causing the oyster clamping element to press down on the oyster placed within the cavity of the oyster clamp.

30. 27. The method of claim 26, wherein operating the handle is accomplished by depressing the handle of the oyster clamp so as to lower a piston having the oyster clamping element fixed to its lower end, causing the oyster clamping element to press down on the oyster placed within the cavity of the oyster clamp.

31. placing a bivalve mollusks within the cavity of the oyster clamp; placing the bivalve shell toward the rear of a recess in the top surface of a base element of the oyster clamp; pressing the bivalve against a backstop of the oyster clamp; holding the bivalve in place by manipulating the handle until the oyster clamping element compresses the top of the bivalve; 27. The method of claim 26, comprising:

Images