Abstract
Tool grips and handles may be enhanced by the addition of modular inserts which compensate for two voids in the human hand. A first insert may fill a void in the palm of the hand while a second may fill one by the fingers. By filling the voids, a more natural, relaxed, and customizable grip may be achieved for almost any handle. Use of a plurality of inserts allows for customization according to hand size while the size of the inserts also accounts for the size, dimensions, and axes of the handle and tool in general. Meniscus-shaped inserts may be stacked on one another for optimum effect.
Claims
1. A grip enhancement system for a tool grip having a circumference, the grip enhancement system comprising a plurality of meniscus-shaped inserts of at least two different sizes, a first of the plurality of meniscus-shaped inserts positioned on the circumference of the tool grip and a second of the plurality of meniscus shaped inserts positioned on the first meniscus-shaped insert, the first meniscus-shaped insert defining an axis at its thickest point and the second meniscus shaped insert creating a second, different, axis at a thickest point of the first and second meniscus-shaped inserts combined.
2. The grip enhancement system of claim 1, further comprising a third of the plurality of meniscus shaped inserts being positioned upon the tool grip.
3. The grip enhancement system of claim 2, further comprising a fourth of the plurality of meniscus-shaped inserts being positioned on the third meniscus-shaped insert.
4. A grip enhancement system for a tool grip having a circumference, the grip enhancement system comprising a plurality of meniscus-shaped inserts of at least two different sizes, a first of the plurality of meniscus-shaped inserts positioned on the circumference of the tool grip, defining an axis at its thickest point, and a second of the plurality of meniscus shaped inserts positioned on the first meniscus-shaped insert such that the second of the plurality of meniscus-shaped inserts does not entirely cover the first of the plurality of meniscus-shaped inserts and thereby creating a second, different axis at the thickest point of the first and second meniscus-shaped inserts combined.
5. The grip enhancement system of claim 4, further comprising a third of the plurality of meniscus shaped inserts being positioned upon the tool grip.
6. The grip enhancement system of claim 5, further comprising a fourth of the plurality of meniscus-shaped inserts being positioned on the third meniscus-shaped insert.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) FIG. 1 is a side elevation of a hand with two modular grip enhancement inserts.
(2) FIG. 2 is a front elevation of a hand with no support (Prior art).
(3) FIG. 3 is a rear elevation of the hand of FIG. 2 (Prior art).
(4) FIG. 4 is a front elevation of a hand with support.
(5) FIG. 5 is a rear elevation of the hand of FIG. 4.
(6) FIG. 6 is a perspective view of a racket with alternate modular grip enhancement inserts.
(7) FIG. 7 is a side elevation of a baseball bat utilizing the invention.
(8) FIG. 8 is a cross-section of the baseball bat of FIG. 7, taken along line VIII-VIII.
(9) FIGS. 9A-9C are sectional views of a handle with three grip enhancement insets positioned at various angles to create an axially modifiable grip.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
(10) With reference now to the drawings, a preferred embodiment of modular grip enhancements is herein described. It should be noted that the articles a, an, and the, as used in this specification, include plural referents unless the content clearly dictates otherwise.
(11) With reference to FIG. 1, the human hand 10 has two voids when forced around a cylindrical or conical grip. These two voids are approximated by grip inserts 110, 120. Grip insert 110 is intended to fill a cavity in the palm of the hand while insert 120 is located proximate the middle 115 and ring 117 fingers. Ideally, the second insert 120 will help the fingers maintain a natural arc 30 for a more relaxed grip experience. Without the inserts (FIGS. 2 and 3), the hand 10 may grasp a handle 20, but the lack of support causes overcompensation in the index finger 113 and thumb 110 and by the pinky 119. The hand 10 essentially collapses on the grip 20. The overcompensation then may lead to repetitive stress injuries, such as tendonitis in the forearm and elbow.
(12) Use of the modular grip enhancement inserts (FIGS. 4 and 5) provide multiaxial, multi-point support to the hand by filling the cavities in the palm and by the fingers. Use of the first insert 110 compensates for the over gripping caused by the thumb 111 and index finger 113 while the second insert allows a natural contoured contact for the middle 115 and ring 117 fingers. This natural contoured contact allows these fingers to adequately grip the handle 20 and distribute the force necessary to control the tool along all five fingers. The contoured contact also registers the tool handle 20 with the hand 10 such that the tool will always be in the same position relative the hand 10. This then provides consistency in the use of the tool, which can be of great importance when the tool is some form of sports equipment or some other tool where such consistency is desirable.
(13) In use (FIG. 6), at least two inserts 110, 120 are provided, one for the palm cavity and one for the finger cavity, which are generally opposite each other. Providing a set of inserts with at least two different sizes and or shapes for each insert allows for them to be tried out for optimum performance and relocated or exchanged if needed. In the preferred embodiment, at least one additional set of alternate inserts, 115, 125, should also be provided to compensate for different hand 10 and handle 20 sizes and geometries. Two, or possibly more, differently-sized inserts can be used to account for different palm and finger sizes and relative distances, and also accommodate different tool handles. Multiple inserts of the same shape and size may also be provided in such a set, as two identical inserts could also be used as the first and second inserts (note that inserts 115 and 120 are approximately the same size). Inserts 110, 120 should be applied to the grip/handle 20 by a temporary adhesive and the tool used to determine proper fit. Inserts 110, 120 may then be moved or switched with alternate inserts 115, 125 as needed. Once proper fit is established, the inserts may then be made a permanent part of the handle 20, such as permanent adhesives, grip tape, or other securement methods. A single piece with two bulbous bodies would have less adaptability and customization, though could still function as a less ideal module.
(14) Of particular note is the ability of the inserts to create multi-axial grip possibilities. It should be noted in FIGS. 7 and 8 that each insert (110, 115, 120, 125) is shaped similarly to a meniscus lens, featuring a concave inner surface which nests with the convex outer surface of either the handle 30 or other inserts. The meniscus shape can be generally described as a positive meniscus, having a thicker middle than the edges, though there may be occasions where a negative meniscus shape would be beneficial. For the preferred embodiment, the convex outer surface has a greater curvature than the concave inner surface. This feature, combined with the inherent flexibility of the inserts themselves, allows the inserts to nest on each other. Each insert may be angled in a fashion to offset a natural major or minor axis of the handle 30. This is shown in further detail in FIGS. 9A-9C. As can be seen in these figures, a round handle 20 has two inserts 120, 125 stacked on its circumference, defining an axis X where the insert's (or inserts' as shown in FIG. 9) combined maximum width W resides on the handle. Alternately, a second axis Y could also be defined, providing initial support as with the first X axis but diverting the axis as a whole. This axis Y would also be defined by the point of maximum width W of the two inserts combined, but this would be offset as the second insert is likewise offset from the first. Still further, a third axis Z may be defined by adding yet another insert 125 over the existing two and creating another point of maximum width W. In this manner, an infinite series of axis may be defined and utilized by a user. While this is not well seen with a round example, there may be non-symmetrical features on the tool, club, paddle, etc. which would make the definition of such an axis advantageous. These axes may either enhance or reduce the natural axes of non-round handles.
(15) Inserts may be made of any suitable material, with molded polymers being preferred. Polymer durometer may be selected to provide a balance of cushioning and support. An inter-webbed understructure may be provided to reduce weight while maintaining physical integrity. Shapes of each insert may be varied for the type of grip (straight or conical) and for various hand shapes. Multiple inserts may be designed to co-operatively fill one void. Inserts may be identical to each other, or not.
(16) Although the present invention has been described with reference to preferred embodiments, numerous modifications and variations can be made and still the result will come within the scope of the invention. No limitation with respect to the specific embodiments disclosed herein is intended or should be inferred.
