Seafood processing scissors
The seafood processing scissors address the inefficiency of existing tools by providing a pivoted blade design with a handle protrusion and curved cutting edges, enabling easy and efficient processing of various seafood types without skilled techniques.
Patent Information
- Application Number
- JP2025138587
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2025-08-21
- Publication Date
- 2026-01-14
- Estimated Expiration
- 2045-08-21
AI Technical Summary
Existing seafood processing tools, such as shrimp shell cutting scissors and multipurpose fishing shears, are specialized or unsuitable for handling various types of seafood, requiring skilled techniques and are inefficient for tasks like removing heads, internal organs, and cutting through seafood without letting it escape.
The seafood processing scissors feature a first and second blade portion with a pivot point, a handle protrusion for insertion into seafood, and curved cutting edges to facilitate easy processing of seafood by allowing the scissors to be angled and inserted into the seafood, with a third cutting edge for slicing after insertion.
Enables easy and efficient processing of seafood without requiring skilled techniques, suitable for various aquatic animals including fish and echinoderms like sea cucumbers, by allowing easy access and cutting through without escape.
Smart Images

Figure 0007798413000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to scissors used for processing seafood. [Background technology]
[0002] When processing seafood, pre-processing such as removing the head and internal organs is mainly done by hand using a knife, but this requires the skilled techniques of a craftsman and is inefficient. Shrimp shell cutting scissors that make it easy to peel shrimp shells and remove their internal organs are known (Patent Document 1). In addition, multipurpose fishing scissors that can be used for preparing seafood are known (Non-Patent Document 1). [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-071282
[0004] [Non-Patent Document 1] https: / / mcccorp.co.jp / wordpress / wp-content / uploads / 2020 / 05 / 9-4.pdf (Marine Cutter MRC-170) Summary of the Invention [Problem to be solved by the invention]
[0005] The shrimp shell cutting scissors described above are specialized for processing shrimp, and are not suitable for use with other seafood such as fish. Furthermore, the above-mentioned all-purpose fishing shears are also used to cut nets, seaweed, resin ropes, etc., and are not necessarily suitable for processing seafood.
[0006] The present invention was conceived in light of the above circumstances, and an object of the present invention is to provide scissors that allow for easy preparation of seafood and other processing. [Means for solving the problem]
[0007] That is, the seafood processing scissors of the present invention are: A first blade portion and a second blade portion are provided, The first blade portion and the second blade portion are connected at a pivot point, the other ends of the first blade portion and the second blade portion via the pivot point are provided with a first handle portion and a second handle portion, respectively, for opening and closing a cutting surface by rotating the first blade portion and the second blade portion around the pivot point; The cutting edge of the second cutting edge is curved to form a concave shape, the cutting edge of the first cutting edge portion is curved to form a convex shape along the concave shape of the cutting edge of the second cutting edge portion, the first handle portion has a protrusion extending in a direction opposite to the second handle portion, the protrusion being located within a plane in which the first blade portion and the second blade portion rotate; The protrusions extend in the direction of the cutting edges of the first and second blade portions.
[0008] In the seafood processing scissors of the present invention, the first handle portion is in a substantially plane in which the first blade portion and the second blade portion rotate, and is provided with a protrusion portion that extends opposite the second handle portion, and the protrusion portion extends in the direction of the cutting edges of the first blade portion and the second blade portion.This allows the tip of the protrusion portion to be inserted into the mouth or gills of seafood, cut open, and the internal organs and other contents to be removed. Furthermore, since the cutting edge of the second blade section is curved to form a concave shape, the cutting edge of the second blade section can be easily inserted into the cut made by the protrusion, and further, since the cutting edge of the first blade section is curved to form a convex shape along the concave shape of the cutting edge of the second blade section, it is possible to cut through the seafood without letting it escape.
[0009] In the seafood processing scissors of the present invention, the protrusion preferably has a third cutting edge at the base where it joins with the first handle. The third cutting edge is preferably positioned so that its cutting edge faces the cutting edges of the first and second cutting edges. This configuration makes the third cutting edge suitable for slicing seafood after the protrusion is inserted into it.
[0010] The seafood processing scissors of the present invention are suitable for processing sea cucumbers, that is, can be suitably used as scissors for processing sea cucumbers. [Effects of the Invention]
[0011] The seafood processing scissors of the present invention allow for easy processing such as preparation of seafood without requiring skilled techniques. [Brief explanation of the drawings]
[0012] [Figure 1] FIG. 1 is a schematic diagram (top view) showing one embodiment of seafood processing scissors of the present invention. [Figure 2] FIG. 2 is an exploded schematic diagram (top view) of the seafood processing scissors (1) of the embodiment shown in FIG. 1, showing the scissors body (11) including the first cutting edge (1A). [Figure 3] FIG. 3 is an exploded schematic diagram (top view) of the seafood processing scissors (1) of the embodiment shown in FIG. 1, showing the scissors body (12) including the second cutting edge (2A). DETAILED DESCRIPTION OF THE INVENTION
[0013] In the context of the seafood processing scissors of the present invention, "seafood" is a general term for aquatic animals that live in the sea or rivers, and includes, in addition to fish and shellfish, crustaceans (shrimp, crab, etc.), mollusks (squid, octopus, etc.), echinoderms (sea urchin, sea cucumber, etc.), aquatic mammals (dolphins, whales, etc.), aquatic reptiles (turtles, etc.), etc. The seafood processing scissors of the present invention are suitable for processing fish and echinoderms, and can be particularly suitably used for processing sea cucumbers.
[0014] In the case of the seafood processing scissors of the present invention, "processing" includes physical processing such as slicing and cutting seafood, and is particularly suitable for processing known as preparation, which includes, for example, removing and separating the head, scales, gills, internal organs, and fins of seafood. The seafood processing scissors of the present invention can be suitably used for removing and separating the head and internal organs of seafood.
[0015] One embodiment of the seafood processing scissors of the present invention will be described below with reference to the drawings. However, this is merely an example for realizing the seafood processing scissors of the present invention and is not intended to be limiting. In other words, the dimensions, materials, shapes, relative positions, etc. of the components described in the embodiment are merely illustrative examples and are not intended to limit the scope of the present invention to these. Note that the dimensions and positional relationships of the components shown in each drawing may be exaggerated for clarity.
[0016] Figure 1 shows a schematic diagram (top view) of a pair of seafood processing scissors (1) (hereinafter, sometimes simply referred to as "scissors (1)") according to one embodiment of the present invention, and Figures 2 and 3 show schematic diagrams (top views) of the scissors (1) disassembled. Figure 2 shows a scissors body (11) including a first cutting edge (1A), and Figure 3 shows a scissors body (12) including a second cutting edge (2A).
[0017] In the embodiment shown in FIG. 1, scissors (1) have a first blade portion (1A) and a second blade portion (2A) pivotally connected by a pivot point (3), and a first handle portion (1B) and a second handle portion (2B) are provided at the other ends of the first blade portion (1A) and the second blade portion (2A) via the pivot point (3). In this embodiment, first finger rings (1C) and second finger rings (2C) are provided at the ends of the first handle portion (1B) and the second handle portion (2B), respectively. Finger rings are not necessarily required for the seafood processing scissors of the present invention, but from the standpoint of operability, a configuration including finger rings is preferable.
[0018] When using the scissors (1) shown in Figure 1, the thumb is placed in the second ring portion (2C) and the ring finger in the first ring portion (1C), and the first handle portion (1B) and the second handle portion (2B) are opened and closed to rotate the first blade portion (1A) and the second blade portion (2A) around the rotation fulcrum (3), thereby opening and closing the cutting surface (5). The first ring portion (1C) may be provided with a protrusion (not shown) for engaging the little finger.
[0019] In the embodiment shown in Figures 2 and 3, the first blade portion (1A) and the second blade portion (2A) are arranged so that the sharply formed cutting lines (1a) and (2a) face the cutting surface (5), respectively. In the embodiment shown in Figures 1 to 3, the cutting edge (2a) is curved to form a concave shape, and the cutting edge (1a) is curved to form a convex shape along the concave shape of the cutting edge (2a). This configuration allows the scissors (1) to be used while being positioned at an angle to seafood, improving operability. In addition, the cutting edge can be used while digging into seafood, allowing the scissors to cut through without letting any seafood escape.
[0020] The curvature of the cutting edge (1a) and cutting edge (2a) is a curvature within the approximate plane on which the first cutting edge (1A) and second cutting edge (2A) rotate, and does not include curvatures that deviate from this approximate plane. In this specification, "approximately within the plane on which the first cutting edge (1A) and second cutting edge (2A) rotate" refers to the range formed by the plane on which the first cutting edge (1A) and second cutting edge (2A) rotate and the thickness of the scissors (1).
[0021] The curvature radius R of the cutting edge (1a) and cutting edge (2a) is designed according to the size of the seafood to be processed and is appropriately selected, for example, from the range of 10 mm to 1000 mm, preferably 20 mm to 100 mm. In the embodiment shown in Figures 1 to 3, the curvature radius R of the cutting edge (1a) and cutting edge (2a) is approximately 50 mm, which is suitable for processing sea cucumbers.
[0022] The first blade portion (1A) and the second blade portion (2A) are made of metal such as stainless steel or iron. In the embodiment shown in FIGS. 1 to 3, the first blade portion (1A) and the second blade portion (2A) are made of stainless steel from the viewpoint of rust prevention. From the viewpoint of ease of manufacture, the first handle portion (1B), the second handle portion (2B), the first ring portion (1C), and the second ring portion (2C) are preferably made of the same material as the first blade portion (1A) and the second blade portion (2A). The first ring portion (1C) and the second ring portion (2C) may be coated with a material with high friction resistance, such as rubber, to prevent slipping.
[0023] The blade length of the first blade portion (1A) and the second blade portion (2A) is designed according to the size of the seafood to be processed and is appropriately selected, for example, from a range of 2 cm to 20 cm. The blade length of the first blade portion (1A) and the second blade portion (2A) is the shortest distance from the base of the cutting edge (1a) and the cutting edge (2a) of the cutting edge. In the embodiment of FIG. 1, the blade length of the first blade portion (1A) and the second blade portion (2A) is approximately 7 cm, which is suitable for processing sea cucumbers.
[0024] The connection between the first blade portion (1A) and the second blade portion (2A) at the pivot point (3) is not limited as long as they are rotatable. For example, a hole may be formed in the scissors bodies (11) and (12) at a position corresponding to the pivot point (3) and a shaft may be fitted thereto. Alternatively, a convex portion may be formed on one side of the scissors bodies (11) and (12) and a concave portion may be formed on the other side at a position corresponding to the pivot point (3), and the convex portion and the concave portion may be fitted together. Furthermore, the scissors bodies (11) and (12) may be separable at the pivot point (3). In the embodiment shown in Figures 1 to 3, the scissors bodies (11) and (12) are separable and can be separated and washed after use, making them hygienic.
[0025] 1 to 3, the first handle (1B) has a protrusion (6) extending away from the second handle (2B) in the plane in which the first blade (1A) and the second blade (2A) rotate, the protrusion (6) extending toward the cutting edges of the first blade (1A) and the second blade (2A). More specifically, the protrusion (6) extends from the first handle (1B) between the rotation fulcrum (3) and the first ring (1C), and bends from the base where it joins the first handle (1B) toward the cutting edges of the first blade (1A) and the second blade (2A), with its tip extending. The protrusion (6) has a third cutting edge (6A) at its base where it joins with the first handle (1B) so that the cutting edge faces in the direction of the cutting edges of the first cutting edge (1A) and the second cutting edge (2A).
[0026] According to this configuration, the tip of the protrusion (6) can be inserted into the mouth or gills of the fish or shellfish, and cut open to remove the contents such as internal organs. The third blade (6A) is suitable for cutting open the fish or shellfish after the protrusion (6) has been inserted into it. In addition, since the cutting edge (2a) is curved to form a concave shape, the cutting edge of the second cutting edge (2A) can be easily inserted into the cut made by the protrusion (6), and further, since the cutting edge (1a) is curved to form a convex shape along the concave shape of the cutting edge (2a), it is possible to cut through the seafood without letting it escape.
[0027] The blade length (x) of the third blade portion (6A) is designed according to the size of the seafood to be processed and is appropriately selected, for example, from the range of 5 mm to 20 mm. In the embodiment shown in Figure 2, the blade length (x) of the third blade portion (6A) is approximately 7 mm, which is suitable for processing sea cucumbers.
[0028] With the above-described configuration, the scissors (1) shown in the embodiment of FIG. 1 can easily perform processing such as preparing seafood without requiring skilled techniques.
[0029] Although the present invention has been described in detail using the above-described embodiments, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented in modified and altered forms without departing from the spirit and scope of the present invention as defined by the claims. Therefore, the description in this specification is intended to be illustrative and explanatory and does not have any limiting meaning on the present invention. [Industrial Applicability]
[0030] The scissors of the present invention can be suitably used for processing seafood. [Explanation of symbols]
[0031] 1. Seafood processing scissors 1A First cutting edge 2A Second cutting edge 3 Pivoting fulcrum 11 Scissors body including first blade portion 12 Scissors body including second blade portion 1B First handle 2B Second handle 1C First Ring 2C Second Ring 1a: cutting line of first cutting edge 2a Cutting line of the second cutting edge 5 Cut surface 6 Protrusion 6A Third cutting edge
Claims
1. A pair of scissors for processing seafood, A first blade portion and a second blade portion are provided, the first blade portion and the second blade portion are connected at a pivot point, the other ends of the first blade portion and the second blade portion via the pivot point are provided with a first handle portion and a second handle portion, respectively, for opening and closing a cutting surface by rotating the first blade portion and the second blade portion around the pivot point; The cutting edge of the second cutting edge is curved to form a concave shape, the cutting edge of the first cutting edge portion is curved to form a convex shape along the concave shape of the cutting edge of the second cutting edge portion, the first handle portion has a protrusion extending in a direction opposite to the second handle portion, the protrusion being located within a plane in which the first blade portion and the second blade portion rotate; the protrusions extend toward the cutting edges of the first blade portion and the second blade portion, the protrusion has a third cutting edge at a base portion that is coupled to the first handle portion; The first and second handles are provided at their ends with a first finger ring and a second finger ring, respectively; The protrusion extends from the first handle between the pivot point and the first ring.
2. The scissors according to claim 1 , wherein the third blade portion is arranged so that a cutting edge thereof faces in the direction of the cutting edges of the first blade portion and the second blade portion.
3. The scissors according to claim 1 or 2, which are scissors for processing sea cucumbers.
Citation Information
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