An ergonomic attachment for a knife

Abstract

A grip apparatus for a knife, comprising: a body comprising an upper member, a first side member extending from a first side of the upper member and a second side member extending from an opposed second side of the upper member, the upper member, the first side member and the second side together defining a recess in the body configured to receive and retain a knife blade therein, a first wing member extending outwardly from the first side member and a second wing member extending outwardly from the second side member; and finger on either the first wing member and the first side member or the second wing member and the second side member.

Description

AN ERGONOMIC ATTACHMENT FOR A KNIFETECHNICAL FIELD

[0001] The present invention relates to an attachment for knives. In particular, the present invention relates to an ergonomic attachment for a knife that improves force application while reducing hand strain, discomfort, and fatigue during use.BACKGROUND

[0002] Knives, such as kitchen or chef’s knives, are commonly used with either a hammer grip or a pinch grip. In a hammer grip, the user wraps their entire hand around the knife handle, similar to holding a hammer, allowing force to be applied primarily from the arm and shoulder. While this grip provides a firm hold, it often limits fine control and precision. Additionally, prolonged use may cause wrist fatigue.

[0003] The pinch grip is a more precise way to hold a knife and is commonly used by professional chefs for enhanced control. Typically, the thumb and index finger grip the blade near the handle, while the remaining fingers wrap around the handle for support. However, this grip often causes discomfort or pain over time, as the index finger presses against the spine of the knife. The pinch grip may also provide less stability for heavy chopping, particularly for users with limited hand strength.

[0004] Existing knife designs and handle attachments do not adequately address these ergonomic issues, as they fail to provide a grip that optimally distributes force while maintaining control and precision. Users frequently experience hand fatigue and discomfort due to limited surface areas for applying cutting and grip forces effectively. Conventional handles often force users into gripping positions that strain the wrist, fingers, and palm, leading to discomfort, particularly during prolonged use. Additionally, many current designs do not provide sufficient stability or flexibility to accommodate different cutting techniques and hand sizes, reducing overall usability and efficiency.

[0005] Accordingly, there is a need for a novel knife design that enhances grip ergonomics while maintaining precise control and force distribution. Such a design should provide improved hand positioning to reduce strain, prevent direct pressure on sensitive areas such as the index finger, and enable users to apply cutting force more effectively. Furthermore, the design should be adaptable for both new knives and existing knives through a retrofit attachment, ensuring broad applicability across different types of knives.

[0006] It will be clearly understood that, if a prior art publication is referred to herein, thisreference does not constitute an admission that the publication forms part of the common general knowledge in the art in Australia or in any other country.SUMMARY OF INVENTION

[0007] Embodiments of the present invention provide an ergonomic attachment for a knife, which may at least partially address one or more of the problems or deficiencies mentioned above or which may provide the public with a useful or commercial choice.

[0008] In a first aspect, the invention resides broadly in a grip apparatus for a knife, comprising: a body comprising an upper member, a first side member extending from a first side of the upper member and a second side member extending from an opposed second side of the upper member, the upper member, the first side member and the second side member together defining a recess in the body configured to receive a knife blade therein, a first wing member extending outwardly from the first side member and a second wing member extending outwardly from the second side member; and wherein, in use, the grip apparatus provides an ergonomic positioning of a user’s index finger on either the first wing member and the first side member or the second wing member and the second side member.

[0009] Advantageously, the present invention provides a grip apparatus that assists in distributing force more evenly across the user’s hand, which can reduce hand fatigue, strain, and discomfort during extended use. The positioning of the user's index finger along the wing members and side members of the grip apparatus ensures that a cutting force is applied more precisely, leading to better control over the knife and improved precision during tasks. The ergonomic design of the grip apparatus may alleviate pressure on the user’s hand, particularly on the index finger, which is a common source of discomfort in traditional knife grips. The placement of the wing members allows for a more natural alignment of the user’s hand and fingers, enhancing the overall grip stability. This design is especially beneficial for tasks requiring repeated or sustained cutting motions, such as chopping, slicing, or sawing through tougher materials, where a secure grip and reduced hand fatigue are essential.

[0010] In addition, the adjustable nature of the grip apparatus, particularly its capacity to conform to different hand sizes and finger positions, makes it versatile and suitable for a wide range of users. The configuration also provides greater flexibility in terms of blade types and knife shapes, accommodating different knives and allowing for easier customisation based on the user's specific needs and preferences.

[0011] The grip apparatus in the present invention may be configured for use with a wide range of knife types used in various applications.

[0012] It will be understood that the term “knife” is used to refer to a cutting tool consisting of a blade and a handle. A knife can be used for various purposes including cooking, hunting, survival, utility work, and craft applications. Knives come in various designs depending on their intended use, and their construction and materials significantly influence their performance, durability, and ergonomics.

[0013] As previously stated, the grip apparatus comprises a body. Preferably, the body is configured to engage with a knife blade while also providing ergonomic support for the user’s hand during cutting tasks.

[0014] The body may be formed in any suitable shape, size, or configuration. The actual shape, size and configuration may depend on factors including the intended knife type, ergonomic goals, and user preferences. In general, the design of the body may be configured to provide improved comfort, control, and compatibility with different blade geometries and handle styles. Thus, in a preferred embodiment of the invention, the apparatus may be configured to be used with different types of knives, including knives of different shape and size.

[0015] In some embodiments, the body may be substantially channel-shaped, U-shaped or C-shaped, such that it is configured to receive a knife blade. In this embodiment of the invention, the first side member and the second side may form the arms of the body and may be interconnected by the upper member.

[0016] The body may be substantially symmetrical or asymmetrical about a longitudinal axis thereof. Preferably, however, the body may be substantially symmetrical about a longitudinal axis thereof such that the apparatus may be used by both left-handed and right-handed users. The body may be shaped to provide regions configured to abut a user’s hand during use. For instance, the body may include regions that are curved, rounded and / o or faceted to provide improved ergonomic handling and reduce pressure points during extended use. Further, the body may be of any suitable length (i.e., in the longitudinal direction), for instance to accommodate different blade lengths, or simply based on a user’s preference. In a preferred embodiment of the invention, however, the length of the apparatus is less than the length of the knife blade. More specifically, the length of the apparatus may be less than the length of the spine of the knife blade. Thus, the apparatus extends along only a portion of the knife blade.

[0017] In some embodiments, the body may incorporate tapered sections or contoured sections configured to provide locations for finger placement or to improve the comfort of use.

[0018] The body may be made from any suitable material or combination of materials. For examples, the body may be made from a polymeric material, or combination of polymeric materials. In a particular embodiment, the body may be at least partially fabricated from polymers such as ABS, nylon, polycarbonate, or reinforced composites. It is envisaged that these materials may provide improved durability and impact resistance, and may also make the body relatively lightweight.

[0019] In other embodiments, the body may be at least partially fabricated from one or more elastomeric materials, such as, but not limited to, silicone or thermoplastic rubber (TPR). These materials may provide improved cushioning and grip-enhancing surfaces.

[0020] In further some embodiments, the body may be made from a metal or a metal alloys, such as aluminium or stainless steel, where added rigidity or weight is desirable.

[0021] In a preferred embodiment, the body may be fabricated from a material or combination of materials that have anti-bacterial properties, are food grade materials, are dishwasher-safe, have UV-resistant properties, have temperature resistant properties and / or have chemical resistant properties.

[0022] The apparatus may be fabricated in a range of sizes to suit different blade widths and thicknesses. Alternatively, the apparatus may be fabricated in a single size, and may be configured to be used with different knives.

[0023] As previously stated, the body comprises an upper member. The upper member may serve as an upper portion of the apparatus when in use. In general, the upper member may provide a surface that is located over a spine of the knife blade when the grip apparatus is in use.

[0024] The upper member may be of any suitable shape, depending on the functional and ergonomic requirements of the grip apparatus.

[0025] In some embodiments, the upper member may be provided with a generally flat or slightly curved surface. In use, it is envisaged that a user’s index finger, thumb, and / or palm may be located in abutment with the upper member during use.

[0026] In other embodiments, the upper member may be shaped so as to accommodate the curvature of the user’s finger, provide additional vertical clearance over the blade spine and distribute stress more evenly across the structure. In this embodiment, the upper member may be arch or dome shaped.

[0027] In a preferred embodiment of the invention, the upper member may comprise a first face and an opposed second face. The first face may constitute a portion of an outer surface of the apparatus, while the second face may be located within the recess in which the knife blade is received. In some embodiments, the spine of the knife blade may be located in abutment with, or close proximity to, the second face of the upper member in use.

[0028] In some embodiments, the second face may include a recess, groove, or channel that at least partially receives the spine of the knife blade. It is envisaged that this may assist in the alignment and positioning of the apparatus on the knife blade.

[0029] The first face of the upper member may include surface texturing (such as ridges, grooves or the like) to enhance tactile feedback and grip during use.

[0030] In some embodiments, the first face may incorporate a non-slip coating, improving comfort and control even in wet or greasy conditions. In addition, the first face of the upper member may be rounded or chamfered along its edges to reduce discomfort or chafing against the user’s fingers.

[0031] The upper member, the first side member and the second side member may be of unitary construction, or may be fabricated separately thereto, and configured for fixed or removable connection thereto. Preferably, the upper member, the first side member, the second side member, the first wing member and the second wing member may be of unitary construction

[0032] As indicated, the body also comprises a first side member extending from a first side of the upper member and a second side member extending from an opposed second side of the upper member.

[0033] The first side and the second side of the upper member may refer to the opposing lateral edges of the upper member. These sides may define the transverse boundaries of the upper member and serve as the points from which the first and second side members extend downward. The orientation of the first side member and the second side member may be such that, in use, the first side member and the second side member are positioned substantially parallel to one another, and to opposed faces of the knife blade. Preferably, the first side member and the second side member extend generally downward from the upper member along the opposing faces of the knife blade.

[0034] The first side member may extend from the first side of the upper member in a generally downward direction. Similarly, the second side member may extend from the second side of the upper member substantially parallel to the first side member. Together, the first andsecond side members and the upper member define a recess or channel within the body. It is envisaged that the first and second side members may provide surfaces against which a user’s fingers may rest during use.

[0035] The first and second side members may be of varied shapes to suit different functional or ergonomic needs. For instance, the side members may be substantially flat or planar. In other embodiments, the side members may be curved inward or angled, forming a converging profile that may improve a user’s grip.

[0036] The lower ends of the side members (i.e., the end of the side members distil to the upper member) may be rounded, chamfered, or flared outward to enhance user comfort and allow better finger positioning.

[0037] In a preferred embodiment of the invention, the first and second side members may each comprise a first face and an opposed second face. The first face may constitute a portion of an outer surface of the apparatus, while the second face may be located within the recess in which the knife blade is received. In some embodiments, opposed faces of the knife blade may be located in abutment with, or close proximity to, the second faces of the first side member and the second side member in use.

[0038] The second faces of the side members may be relatively smooth for insertion of the knife blade. Alternatively, the second faces of the side members may also be textured, ribbed, or grooved to enhance grip on the knife blade.

[0039] The first faces of the side members may be contoured to provide ergonomic finger supports, or may be shaped to integrate with other members for additional grip areas.

[0040] In a preferred embodiment, the first and second side members may have substantially the same length as the upper member, although in other embodiments the length of the first and second side members may be different to the length of the upper member.

[0041] The side members may extend any suitable distance down the knife blade towards the cutting edge thereof. Preferably, however, the side members only extend a portion of the distance from the spine of the knife blade to the cutting edge of the knife blade.

[0042] In some embodiments, the side members are coextensive with the upper member, meaning their lengths are substantially equal. In other embodiments, the side members may be shorter than the upper member, such that they may extend only along a central portion of the upper member’s length. In further some embodiments, the side members may be longer than the upper member, for example, by extending beyond the ends of the upper member. Thisconfiguration may enhance mechanical retention by engaging a greater surface area of the blade or provide extended gripping surfaces for additional user comfort.

[0043] While both the first side member and the second side member serve the same role in securing the knife blade and providing a gripping surface for the user, their individual sizes or proportions may be varied to meet specific ergonomic or design requirements.

[0044] In some embodiments, the first side member and the second side member may have differing lengths. One side member may be shorter to accommodate a smaller or narrower blade, while the other side member may be longer to suit a wider or thicker blade. This variance in length may allow the grip apparatus to be customised for different knife shapes or blade profiles, especially for knives with non-uniform spines or blades that taper along their length.

[0045] The width or thickness of the first side member and second side member may also differ. For example, the first side member may be thicker or wider to provide additional support or force distribution on one side of the blade, while the second side member may be designed with a slimmer profile to offer greater flexibility or comfort.

[0046] Further, the angle at which the side members extend from the upper member may differ. For example, the first side member could extend at a more acute angle relative to the upper member, while the second side member may extend more vertically or at a wider angle, offering variability in hand positioning or enhancing the grip for users with specific ergonomic preferences. In a specific embodiment, however, the first side member and the second member extend substantially perpendicular to the upper member.

[0047] Preferably, the side members are substantially identical to one another. In this way, the apparatus may be used by both left-handed and right-handed users.

[0048] The side members may be connected to the upper member in any suitable manner. In preferred embodiments, the side members and upper member may be formed as unitary structure.

[0049] In some embodiments, the first side member and the second side member may flex or pivot relative to the upper member. For instance, when the knife blade is received in the recess, a user may apply pressure to the first side member and / or the second side member. This may cause the first side member and / or the second side member to move inwardly into abutment with the knife blade. In this way, the grip on the knife blade by the apparatus may be enhanced.

[0050] As previously stated, the upper member, the first side member and the second sidemember together define a recess in the body configured to receive a knife blade therein.

[0051] The recess may generally take the form of a U-shaped or C-shaped channel. Preferably, the upper member may form a top boundary of the recess, while the first side member and the second side member may form lateral boundaries, creating a three-sided enclosure that is open along a lower end thereof to allow for insertion of the blade.

[0052] In some embodiments, the recess may be shaped to accommodate the spine portion of the knife blade, i.e. , the unsharpened edge opposite the cutting edge. The width of the recess may be substantially uniform or tapered to closely conform to the thickness profile of the blade, thereby improving frictional retention and stability.

[0053] In some embodiments, where the recess is tapered, the opening may be slightly wider at the entry point and narrower toward the inner section, allowing the blade to be held into place.

[0054] In preferred embodiments, where the recess is tapered, the opening may alternatively be slightly narrower at the entry point and broader toward the inner section. This reverse taper arrangement may be advantageous for guiding the blade into alignment during insertion, as the narrowed entry assists in centring the blade, while the gradually widening internal section allows the blade to seat naturally into the final position. This configuration may also facilitate a snap-fit engagement, where the blade initially resists entry and then locks into place once fully inserted, providing a secure, tactile indication that the blade is properly seated.

[0055] The reverse taper may also help prevent accidental loosening or detachment during use, especially when the grip apparatus is subjected to repeated chopping motions or lateral forces.

[0056] The dimensions of the taper, including the entry width, interior width, and taper angle, may vary depending on the blade thickness, material tolerances, and retention force desired.

[0057] The entry width may be equal or slightly smaller than the blade spine, relying on the flexibility of the side walls or compressible inserts to allow the blade to pass through under controlled pressure.

[0058] Further, to enhance blade retention, the inner surfaces of the recess may feature any suitable surface treatments or structural mechanisms to enhance frictional engagement between the inner surfaces of the recess and the knife blade. Such treatments or mechanisms may include texturing, micro-etching, grooving, or the incorporation of materials with high surface friction.

[0059] In a preferred embodiment of the invention, the recess is shaped to allow a knife blade to be received therein, but to preclude a knife handle from being received therein. Thus, it is envisaged that the apparatus of the present invention will be located on only the blade of the knife in use.

[0060] In some embodiments, the recess may include additional components, such as embedded magnets, abrasive pads, or high-friction inserts, to further secure the blade within the grip apparatus. For example, magnets may be used to attract and hold metallic blades. Rubberised or elastomeric pads may provide soft but firm contact surfaces, offering both vibration dampening and slip resistance. Abrasive coatings or rough surfaces, such as sandpaper-like textures, may be applied to the surface of the recess to improve static friction and prevent lateral movement.

[0061] In other embodiments, the recess may include one or more grip-enhancing members configured to enhance grip on the knife blade. The one or more grip-enhancing members may be of any suitable form. For instance, the grip-enhancing members may include one or more protrusions. The one or more protrusions may be located on the second faces of the upper member, the first side member and / or the second side member. These protrusions may be in the form of ribs, points or the like that extend from an inner surface of the recess. When a knife blade is inserted, the protrusions may deform, either elastically or compressively, under the pressure of the blade's thickness. This deformation generates strain-based pressure, which in turn grips the knife blade tightly, maintaining it in place.

[0062] The protrusions may be configured in a parallel, staggered, or alternating pattern, and may be oriented vertically, diagonally, or at customised angles to optimise friction across different sections of the blade. The spacing of the protrusions may be substantially evenly distributed for uniform contact or intentionally irregular to concentrate grip in key areas where slippage is more likely. For example, if the protrusions may be oriented vertically relative to the upper member, they may be spaced more closely near the lateral edges to provide stronger side grip, while the central portion may feature wider spacing to accommodate blade flex or allow for easier insertion. The varying protrusion geometry and spacing may provide a balance between secure retention of the blade and ease of installation or removal.

[0063] Alternatively, if the protrusions are oriented horizontally relative to the upper member, their spacing may be varied along the vertical axis of the recess to optimise grip. In some embodiments, the protrusions may be spaced more closely near the lower edges of the side members (i.e., closer to the entry point of the blade) to ensure firm initial engagement with the blade surface. Wider spacing may then be used closer to the upper member to accommodatechanges in blade thickness, allow for easier insertion, or reduce pressure concentration that could impede smooth insertion.

[0064] The protrusions on the respective first and second side members may be arranged in an interleaved or staggered configuration, similar to a toothed or comb-like arrangement. In such embodiments, a protrusion extending inwardly from one side member may be positioned opposite a portion of the opposing side member on which a protrusion is not located. This alternating pattern may allow the protrusions on each side to nest into the gaps between protrusions on the opposite side without directly opposing one another. This configuration may enhance the grip mechanism by allowing the inserted knife blade to engage with protrusion surfaces in an offset manner, increasing surface contact while reducing the likelihood of excessive pressure points.

[0065] Furthermore, the protrusions may be fabricated from flexible materials, such as silicone, thermoplastic elastomers, or rubber, allowing them to conform slightly to the profile of different knife blades while still exerting sufficient retention pressure. Alternatively, the protrusions may be integrally moulded as part of a rigid polymer insert, designed to flex only slightly under load while maintaining structural integrity over repeated use.

[0066] In a specific embodiment, the grip-enhancing member may comprise a sleeve member configured to be received in the recess in the apparatus. The sleeve member may be configured to have a similar shape to that of the recess such that the sleeve member may abut the second faces of the upper member, the first side member and the second side member within the recess. The sleeve member may be held in frictional engagement with the second faces of the upper member, the first side member and the second side member within the recess or may be configured for attachment to second faces of at least one of the upper member, the first side member and the second side member within the recess. For instance, the sleeve member may include one or more protrusions configured to be received in one or more recesses located in the second faces of the upper member, the first side member and the second side member within the recess. Alternatively, the sleeve member may be retained in place within the recess via adhesives or the like. In other embodiments, the sleeve member may be moulded onto the second faces of the upper member, the first side member and the second side member within the recess.

[0067] In a preferred embodiment, the sleeve member may be fabricated from a gripenhancing material. Any suitable grip-enhancing material may be used, such as, but not limited to, rubber, silicone or the like.

[0068] In this embodiment of the invention, the sleeve member may be positioned betweenthe body and the knife blade in use. In this embodiment, the knife blade may abut the sleeve member. Preferably, the sleeve member may be fabricated separately to the body and may be configured for fixed or removable connection thereto.

[0069] Preferably, the knife blade may be received and retained within the recess.

[0070] As indicated, the body comprises a first wing member extending outwardly from the first side member and a second wing member extending outwardly from the second side member. Preferably, the first wing member and the second wing member are configured to extend substantially laterally from the body of the grip apparatus. The wing members may be configured to providing additional surface areas for a user to contact. This may enhance ergonomics, comfort, and control during use.

[0071] The wing members may be formed in various shapes. In some embodiments, the wing members may have a generally planar surface, extending perpendicularly or at an outwardly inclined angle from the side members.

[0072] In other embodiments, the wing members may have a curved or contoured profile, designed to fit the natural curvature of a user's finger or thumb. The curvature may be concave, convex, or a combination of both along different axes. The wing members may provide a slightly rounded but otherwise flat or smooth surface upon which the user’s proximal phalanx of the index finger (or thumb, depending on grip orientation) may comfortably rest and curve over, around, or against. This may allow for secure contact without sharp angles or pressure points that can lead to discomfort or strain. An outer edge of the wing member may also be flared or tapered to facilitate a natural finger wrap-around motion and prevent slipping during lateral cutting movements.

[0073] In further some embodiments, the wing members may have a winged or flared design, broadening from the base to provide a larger support area.

[0074] Typically, the outer edges of the wings may be rounded, bevelled, or chamfered to avoid sharp transitions and promote user comfort.

[0075] The size of the wing members may vary depending on the dimensions of the overall grip apparatus and the type of knife being used. The dimensions of the wing members may be symmetric or asymmetric. Preferably, however, the wing members may be of substantially the same size and shape as one another. In this way, the apparatus may be used by both lefthanded and right-handed users.

[0076] In some embodiments, an outer surface of the wing members may be textured inorder to enhance grip stability and reduce the likelihood of finger slippage during use.

[0077] Generally, the wing members may be formed from the same material as the side members or the upper member.

[0078] The wing members may be connected to the side members using any suitable technique. For instance, the wing members may be fabricated separately to the side members and configured for fixed or removable connection thereto. More preferably, however, the wing members may be formed integrally with the side members and the upper member.

[0079] The wing members may extend from the side members at any suitable angle. For instance, the wing members may extend outwardly from the side members at an angle of between 70° and 110°. More preferably, the wing members may extend outwardly from the side members at an angle of between 80° and 100°. Most preferably, the wing members may extend outwardly from the side members at an angle of about 90°. In this embodiment, the wing members may extend substantially parallel to a lateral axis of the upper member. Thus, in a preferred embodiment of the invention, the apparatus may be substantially T-shaped in plan view.

[0080] The wing members may extend from the side members at any suitable location. For example, in some embodiments, the wing members may extend from a point between opposed ends of the side member. More preferably, the fist wing member and the second wing member may extend from a point at or adjacent an end of the side member. Preferably, the first wing member may extend outwardly from the first member in a direction substantially 180° to a direction in which the second wing member extends outwardly from the second wall member. Preferably, the end of the side members from which the wing members extend may, in use, be in abutment with the user’s hand.

[0081] In such embodiments, when a knife blade is located in the recess, the first wing member and the second wing member may be preferably positioned adjacent to a handle of the knife. Accordingly, the point at which the knife blade meets the knife handle may define the extent of rearward movement of the apparatus. It is envisaged that movement of the apparatus onto the handle is substantially precluded by the recess being sized to preclude the handle from being received therein, and the abutment of the wing members with the handle, the bolster, or a mechanical stop.

[0082] It is envisaged that, the wing members may serve as a protective and supportive platform that inhibits the palm or fingers, particularly the thenar (thumb base) region or proximal phalanges of the index and middle fingers, from coming into direct contact with the spine of theblade.

[0083] As previously stated, the grip apparatus provides an ergonomic positioning of a user’s index finger on either the first wing member and the first side member or the second wing member and the second side member, depending on the user's grip style and handedness preferences. It is envisaged that the positioning of the index finger plays a role in optimising both cutting force and control, and the design of the grip apparatus may ensure that the index finger is positioned in such a way as to maximise comfort, minimise fatigue, and enhance precision during use.

[0084] For example, in some embodiments, the index finger may be located in abutment with the first side member, with the side of the index finger resting along the first wing member. This arrangement may allow the user to apply force to the knife blade while maintaining a comfortable and stable hand position. The side of the index finger may naturally conform to the curved or flat surface of the first wing member, promoting a secure grip that provides both precision and control during cutting tasks. Simultaneously, the thumb or the middle finger may be positioned in abutment with the second side member, with the side of the thumb or the middle finger resting on the second wing member. Therefore, the thumb or the middle finger may be aligned with the index finger on the opposite side of the apparatus, creating a grip that substantially balances the forces exerted on the blade. The contact of the thumb or the middle finger with the second side member and second wing member may help provide stability and ensures that the hand is securely anchored on the apparatus, minimising the risk of slippage during use and reducing fatigue.

[0085] Accordingly, a portion of a user’s palm may be located on the upper member during use. Additional support may be provided by the wing members and / or the side members. The outer surfaces of the wing members, the side members and the upper member may provide a base for the palm to make contact with, ensuring that the entire hand is engaged in the grip and the user can apply force evenly without unnecessary strain on any single part of the hand.

[0086] It is envisaged that the wing members may also play a role in assisting the user to apply backward horizontal force through their index finger, middle finger or other fingers, enhancing the user’s ability to exert control and precision during cutting tasks. When the user grips the knife, the wing members provide a stable surface against which the index finger, middle finger or other fingers can push, facilitating the application of force in a horizontal direction.

[0087] This feature may be especially beneficial during tasks that require backward cutting motions or sawing actions, where the user needs to maintain consistent control over the blade while pulling it through tough or dense materials. As the user applies pressure through theirfingers, the wing members may help distribute the force more evenly, improving both comfort and control during extended use.

[0088] The wing members may further enhance the ergonomic grip by providing a contoured surface where the palm or fingers may naturally rest. By supporting the fingers on their respective side members and wings, the palm is allowed to rest in a relaxed, yet controlled position, maintaining a secure, comfortable, and force-distributing grip across the apparatus.

[0089] In other embodiments, for the user using an opposite hand, the index finger may be pressed firmly against the second side member, with the side of the index finger resting along the second wing member. The thumb or the middle finger may then be positioned to press against the first side member, with the side of the thumb or the middle finger resting on the first wing member.

[0090] This ergonomic configuration may encourage the user to maintain a natural hand posture, improving overall grip efficiency and cutting precision while minimising physical strain. The design of the grip apparatus may enable effective force application while reducing the risk of hand fatigue, even during prolonged or repetitive cutting actions.

[0091] Additionally, the principles of the grip apparatus or handle design could be employed in tools (saws or the like) where user comfort and the reduction of fatigue or discomfort during prolonged use are important factors. The versatile nature of the invention allows for its adaptation to various tools, improving the efficiency, comfort, and safety for users in a wide range of applications.

[0092] According to a second aspect of the present invention, there is provided a handle for a knife, the handle comprising: a handling portion positioned at a first end region of the handle; and a grip portion positioned at a second end region of the handle, the grip portion comprising: an upper member, a first side member extending from a first side of the upper member and a second side member extending from an opposed second side of the upper member, the upper member, the first side member and the second side member together defining a recess configured to receive and retain the knife blade therein, a first wing member extending outwardly from the first side member and a second wing member extending outwardly from the second side member; and wherein, in use, the grip portion provides an ergonomic positioning of a user’s index finger on either the first wing member and the first side member or the secondwing member and the second side member.

[0093] The grip portion may include one or more characteristics or features of the first aspect of the present invention, as hereinbefore described.

[0094] The handling portion is designed to allow the user to hold, manoeuvre, and apply force through the knife during cutting operations. The handling portion may be of any suitable size, shape or configuration, although in a preferred embodiment the handling portion may be relatively elongate. In some embodiment, the handling portion may be provided with a generally cylindrical, oval, or ergonomically contoured shape to conform to the natural grip of the human hand. The cross-section of the handling portion may vary along its length to accommodate palm curvature, thumb placement, and finger wrapping for enhanced comfort and control.

[0095] The handling portion may include recesses, grooves, or finger contours to guide finger placement and provide tactile feedback. The handling portion may also feature a bolster, end cap, or weighted core to balance the overall weight distribution of the knife, improving handling dynamics and reducing user fatigue during extended use.

[0096] The handling portion may be constructed from any suitable material or combination of materials, such as hardwood, polymers, composites, rubberised elements, or metal alloys. It may optionally feature grip-enhancing surface treatments such as knurling, texturing, rubber over-moulding, or anti-slip coatings to improve handling in wet or greasy conditions.

[0097] In some embodiments, the handle may be of unitary construction.

[0098] In other embodiments, the handling portion and the grip portion may be formed as separate components and fixedly or removably connected to one another. The handling portion and the grip portion may be connected using any suitable technique. For instance, the handling portion and the grip portion may be connected using adhesives, fasteners, or interlocking mechanisms.

[0099] Any of the features described herein can be combined in any combination with any one or more of the other features described herein within the scope of the invention.

[0100] The reference to any prior art in this specification is not, and should not be taken as an acknowledgement or any form of suggestion that the prior art forms part of the common general knowledge.BRIEF DESCRIPTION OF DRAWINGS

[0101] Preferred features, embodiments and variations of the invention may be discerned from the following Detailed Description which provides sufficient information for those skilled in the art to perform the invention. The Detailed Description is not to be regarded as limiting the scope of the preceding Summary of Invention in any way. The Detailed Description will make reference to a number of drawings as follows:

[0102] Figure 1 illustrates an isometric view of a grip apparatus for a knife, in accordance with an embodiment of the present invention.

[0103] Figures 2 to 8, 11 to 14, and 15A to 15C illustrate various views of a grip apparatus for a knife, in accordance with an embodiment of the present invention.

[0104] Figures 9 and 10 illustrate a handle for a knife, in accordance with an embodiment of the present invention.DETAILED DESCRIPTION

[0105] Figures 1 to 8, 11 to 14, and 15A, 15B and 15C illustrate a grip apparatus (200) for a knife (900) according to an embodiment of the present invention.

[0106] Referring to Figures 1 to 8, the grip apparatus (200) comprises a body (100). The body (100) comprises an upper member (120), a first side member (150) extending from a first side (125) of the upper member (120) and a second side member (160) extending from an opposed second side (126) of the upper member (120), the upper member (120), the first side member (150) and the second side member (160) together define a recess (190) in the body (100) configured to receive a knife blade (950) therein, a first wing member (170) extending outwardly from the first side member (150) and a second wing member (180) extending outwardly from the second side member (160); and wherein, in use, the grip apparatus (200) provides an ergonomic positioning of a user’s index finger on either the first wing member (170) and the first side member (150) or the second wing member (180) and the second side member (160).

[0107] Referring to Figure 1, the length of the apparatus (200) is less than the length of the knife blade (950), such that the apparatus (200) extends along only a portion of the knife blade (950).

[0108] Referring to Figures 2, 3, 4, 6 and 8, the body (100) is substantially symmetrical about a longitudinal axis thereof. However, referring to Figures 7 and 11, the body (100) can be asymmetrical about the longitudinal axis.

[0109] Referring to Figure 12, the body (100) can be formed in any suitable shape, size, or configuration. The actual shape, size and configuration depend on factors including the intended knife type, ergonomic goals, and user preferences.

[0110] The upper member (120) serves as an upper portion of the apparatus (200) when in use. In general, the upper member (120) provides a surface that is located over a spine of the knife blade (950) when the grip apparatus (200) is in use.

[0111] The upper member (120) is provided with a generally flat or slightly curved surface. In use, it is envisaged that a user’s index finger, thumb, and / or palm can be located in abutment with the upper member (120) during use.

[0112] Referring to Figures 2 and 3, the first side (125) and the second side (126) of the upper member (120) refer to the opposing lateral edges of the upper member (120). These sides (125, 126) define the transverse boundaries of the upper member (120) and serve as the points from which the first and second side members (150, 160) extend downward. The first side member (150) and the second side member (160) are positioned substantially parallel to one another, and to opposed faces of the knife blade (950). The first side member (150) and the second member (160) extend substantially perpendicular to the upper member (120).

[0113] The first side member (150) extends from the first side (125) of the upper member (120) in a generally downward direction. Similarly, the second side member (160) extends from the second side (126) of the upper member (120) substantially parallel to the first side member (150). Together, the first and second side members (150, 160) and the upper member (120) define a recess (190) within the body (100). The first and second side members (150, 160) provide surfaces against which a user’s fingers can rest during use.

[0114] The first and second side members (150, 160) are substantially flat or planar.

[0115] The first and second side members (150. 160) each comprise a first face and an opposed second face. The first face constitutes a portion of an outer surface of the apparatus (200), while the second face is located within the recess (190) in which the knife blade (950) is received. Opposed faces of the knife blade (950) are located in abutment with, or close proximity to, the second faces of the first side member (150) and the second side member (160) in use. The second faces of the side members (150, 160) are textured, ribbed, or grooved to enhance grip on the knife blade.

[0116] Referring to Figures 2, 7 and 8, the first and second side members (150, 160) have substantially the same length as the upper member (120).

[0117] Referring to Figure 1 , the side members (150, 160) only extend a portion of the distance from the spine of the knife blade (950) to the cutting edge of the knife blade (950). The side members (150, 160) are substantially identical to one another.

[0118] Referring to Figures 1 to 8, the side members (150, 160) and upper member (120) are formed as unitary structure.

[0119] Still referring to Figure 2, the recess (190) generally takes the form of a U-shaped channel. The upper member (120) forms a top boundary of the recess (190), while the first side member (150) and the second side member (160) form lateral boundaries, creating a three-sided enclosure that is open along a lower end thereof to allow for insertion of the blade. The recess (190) is shaped to accommodate the spine portion of the knife blade (950).

[0120] Referring to Figure 6, the width of the recess (190) is substantially uniform to closely conform to the thickness profile of the blade, thereby improving frictional retention and stability.

[0121] However, referring to Figures 3 and 4, the width of the recess (190) is tapered. The opening can be slightly narrower at the entry point and broader toward the inner section. This arrangement is advantageous for guiding the blade into alignment during insertion, as the narrowed entry assists in centring the blade (950), while the gradually widening internal section allows the blade (950) to seat naturally into the final position. The entry width can be equal or slightly smaller than the blade spine.

[0122] The width of the recess (190) is of a size configured to allow a knife blade (950) to be received therein, but to preclude a knife handle (980, see Figure 1) from being received therein. Accordingly, the apparatus (200) is located on only the blade (950) of the knife (900) in use.

[0123] Referring to Figure 14, the recess (190) incorporates protrusions (195) located on the second faces of the first side member (150) and the second side member (160). These protrusions (195) are in the form of ribs that extend from an inner surface of the recess (190). When a knife blade is inserted, the protrusions (195) deform, either elastically or compressively, under the pressure of the blade's thickness. This deformation generates strain-based pressure, which in turn grips the knife blade (950) tightly, maintaining it in place.

[0124] Referring to Figure 13, a sleeve member (198) is configured to be received in the recess (190) in the apparatus (200). The sleeve member (198) is configured to have a similar shape to that of the recess (190) such that the sleeve member (198) abuts the second faces of the upper member (120), the first side member (150) and the second side member (160) withinthe recess (190). The sleeve member (198) is held in frictional engagement with the second faces of the upper member (120), the first side member (150) and the second side member (160) within the recess (190), or may be configured for attachment to second faces of at least one of the upper member (120), the first side member (150) and the second side member (160) within the recess (190). The sleeve member (198) is fabricated from a grip-enhancing material.

[0125] In use, the sleeve member (198) is positioned between the body (100) and the knife blade (950) and the knife blade (950) abuts the sleeve member (198).

[0126] Referring to Figure 2, the first wing member (170) and the second wing member (180) are designed to project substantially laterally from the body (100) of the grip apparatus (200). The wing members (170, 180) are configured to providing additional surface areas for a user to contact, thereby enhancing ergonomics, comfort, and control during use.

[0127] The wing members (170, 180) have a generally planar surface, extending perpendicularly or at an outwardly inclined angle from the side members.

[0128] Referring to Figure 5, the wing members (170, 180) can have a curved or contoured profile, designed to fit the natural curvature of a user's finger or thumb.

[0129] Referring to Figures 3, 4 and 6, the wing members (170, 180) are of substantially the same size and shape as one another. In this way, the apparatus (200) can be used by both lefthanded and right-handed users. However, the wing members (150, 160) can differ. Referring to Figures 7 and 11 , the body (100) can have only one wing member (180).

[0130] The wing members (170, 180) are formed integrally with the side members (150, 160) and the upper member (120). Accordingly, the wing members (170, 180) are formed from the same material as the side members (150, 160) or the upper member (120).

[0131] Referring to Figures 1 and 2, the wing members (170, 180) extend outwardly from the side members (150, 160) at an angle of about 90°. Therefore, the wing members (170, 180) extend substantially parallel to a lateral axis of the upper member (120) and the apparatus (200) is substantially T-shaped in plan view.

[0132] The wing members (170, 180) extend from a point at or adjacent an end of the side member (150, 160). In use, the end of the side members (150, 160) from which the wing members (170, 180) extend is in abutment with the user’s hand. When the knife blade (950) is positioned in the recess (190), the wing members (170, 180) are positioned adjacent to a handle (980) of the knife (900). Accordingly, movement of the apparatus (200) onto the handle (980) is substantially precluded by the recess (190) being sized to preclude the handle (980) from beingreceived therein, and the abutment of the wing members (170, 180) with the handle (980). The wing members (170, 180) serve as a protective and supportive platform that inhibits the palm or fingers, particularly the thenar (thumb base) region or proximal phalanges of the index and middle fingers, from coming into direct contact with the spine of the blade (950).

[0133] Referring to Figure 15A, for a right-handed user, the index finger is located in abutment with the second side member (160), with the side of the index finger resting along the second wing member (180). This arrangement allows the user to apply force to the knife blade (950) while maintaining a comfortable and stable hand position. The side of the index finger naturally conforms to the curved or flat surface of the second wing member (180), promoting a secure grip that provides both precision and control during cutting tasks. Referring to Figure 15B, for a left-handed user, the index finger is located in abutment with the first side member (150), with the side of the index finger resting along the second wing member (170).

[0134] Referring to Figure 15C, for a right-handed user to use a T-Grip approach, the index finger is located in abutment with the second side member (160), with the side of the index finger resting along the second wing member (180). The middle finger is positioned in abutment with the first side member (150), with the side of the middle finger resting on the first wing member (170). Therefore, the middle finger is aligned with the index finger on the opposite side of the apparatus (200), creating a grip that substantially balances the forces exerted on the blade (950). The contact of the middle finger with the first side member (150) and first wing member (170) helps provide stability and ensures that the hand is securely anchored on the apparatus (200), minimising the risk of slippage during use and reducing fatigue.

[0135] Accordingly, a portion of the palm of the user’s hand can rest on the upper member (120), with additional support coming from the wing members (170, 180), the side members (150, 160) and the upper member (120).

[0136] Figures 9 and 10 illustrate a handle (500) for a knife (900) according to another embodiment of the present invention.

[0137] The handle (500) comprises a handling portion (400) positioned at a first end region of the handle (500) and a grip portion (300) positioned at a second end region of the handle (300). The grip portion (300) comprises a body (310) comprising an upper member (320), a first side member (350) extending from a first side of the upper member (320) and a second side member (360) extending from an opposed second side of the upper member (320), the upper member (320), the first side member (350) and the second side member (360) together defining a recess (390) in the body (310) configured to receive and retain the knife blade (950) therein, a first wing member (370) extending outwardly from the first side member (350) and a secondwing member (380) extending outwardly from the second side member (360); and wherein, in use, the grip portion (300) provides an ergonomic positioning of a user’s index finger on either the first wing member (370) and the first side member (350) or the second wing member (380) and the second side member (360).

[0138] The handling portion (400) and the grip portion (300) are integrally formed from a single material or moulded as a single body for strength and manufacturing efficiency.

[0139] In the present specification and claims (if any), the word ‘comprising’ and its derivatives including ‘comprises’ and ‘comprise’ include each of the stated integers but does not exclude the inclusion of one or more further integers.

[0140] Reference throughout this specification to ‘one embodiment’ or ‘an embodiment’ means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearance of the phrases ‘in one embodiment’ or ‘in an embodiment’ in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more combinations.

[0141] In compliance with the statute, the invention has been described in language more or less specific to structural or methodical features. It is to be understood that the invention is not limited to specific features shown or described since the means herein described comprises preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims (if any) appropriately interpreted by those skilled in the art.

Claims

CLAIMS1. A grip apparatus for a knife, comprising: a body comprising an upper member, a first side member extending from a first side of the upper member and a second side member extending from an opposed second side of the upper member, the upper member, the first side member and the second side member together defining a recess in the body configured to receive and retain a knife blade therein, a first wing member extending outwardly from the first side member and a second wing member extending outwardly from the second side member; and wherein, in use, the grip apparatus provides an ergonomic positioning of a user’s index finger on either the first wing member and the first side member or the second wing member and the second side member.

2. The grip apparatus of claim 1 wherein the body U-shaped or C-shaped.

3. The grip apparatus of claim 1 or claim 2 wherein the body is substantially symmetrical about a longitudinal axis thereof.

4. The grip apparatus according to any one of the preceding claims wherein the upper member comprises a first face and an opposed second face.

5. The grip apparatus according to claim 4 wherein the first face constitutes a portion of an outer surface of the apparatus, and the second face is located within the recess.

6. The grip apparatus of claim 4 or claim 5 wherein a spine of the knife blade is located in abutment with, or close proximity to, the second face of the upper member in use.

7. The grip apparatus according to any one of the preceding claims wherein the first side member and the second side member are positioned substantially parallel to one another.

8. The grip apparatus according to any one of the preceding claims wherein the first side member and the second side member flex or pivot relative to the upper member.

9. The grip apparatus according to any one of the preceding claims wherein the recess includes one or more grip-enhancing members configured to enhance grip on the knife blade.

10. The grip apparatus according to claim 9 wherein the one or more grip-enhancing members comprise a sleeve member.

11. The grip apparatus of claim 10 wherein the sleeve member is fabricated separately to the body and may be configured for fixed or removable connection thereto.

12. The grip apparatus according to any one of the preceding claims wherein the first wing member and the second wing member are configured to extend substantially laterally from the body of the grip apparatus.

13. The grip apparatus according to any one of the preceding claims wherein the first wing member may extend outwardly from the first member in a direction substantially 180° to a direction in which the second wing member extends outwardly from the second wall member.

14. The grip apparatus according to any one of the preceding claims wherein the first wing member and the second wing member extend from a point at or adjacent an end of the side member.

15. The grip apparatus according to any one of the preceding claims wherein, when the knife blade is located in the recess, the first wing member and the second wing member are positioned adjacent to a handle of the knife.

16. The grip apparatus according to any one of the preceding claims wherein the recess is shaped to allow the knife blade to be received therein, but to preclude a handle of the knife from being received therein.

17. A grip apparatus according to any one of the preceding claims wherein, in use, a portion of a user’s palm may be located on the upper member.

18. The grip apparatus according to any one of the preceding claims wherein the upper member, the first side member, the second side member, the first wing member and the second wing member are of unitary construction.

19. A handle for a knife, comprising: a handling portion positioned at a first end region of the handle; and a grip portion positioned at a second end region of the handle, comprising: a body comprising an upper member, a first side member extending from a first side of the upper member and a second side member extending from an opposed second side of the upper member, the upper member, the first side member and the second side member together defining a recess in the body configured to receive and retain the knife blade therein,a first wing member extending outwardly from the first side member and a second wing member extending outwardly from the second side member; and wherein, in use, the grip portion provides an ergonomic positioning of a user’s index finger on either the first wing member and the first side member or the second wing member and the second side member.

20. The handle of claim 19, wherein the handle is of unitary construction.

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