HELMET WITH EXTERNAL SHOCK WAVE DAMPENING PANELS

Abstract

A helmet including a shell, a plurality of panel buttons pivotally attached at their proximal face to the outer surface of the shell, and the panel buttons are made of a flexible or elastic material with a protective outer coating to protect the panel buttons from abrasion. In one embodiment, the panel buttons are pivotally attached to the outer surface of the shell with a living hinge that allows the panel buttons to swivel in multiple planes that are generally perpendicular to the outer surface of the shell.

Claims

1. A method, comprising: creating panel buttons; attaching the panel buttons to a helmet; wherein the helmet includes a shell; wherein the shell has an outer surface; wherein said attaching includes attaching the panel buttons to the outer surface of the shell; and wherein said attaching includes positioning lateral edges of adjacent panel buttons in close proximity to contact one another as the panel buttons move in a lateral direction during an impact to disperse energy from the impact across the panel buttons.

2. The method of claim 1, wherein: said creating the panel buttons include forming a living hinge on each of the panel buttons; and said attaching the panel buttons includes attaching the living hinge to the outer surface of the shell.

3. The method of claim 2, wherein said creating the panel buttons includes forming a rigid cover made of rigid material.

4. The method of claim 3, further comprising injection molding the panel buttons.

5. The method of claim 4, wherein said injection molding includes injection molding the rigid cover and the living hinge separately.

6. The method of claim 3, wherein an exterior of the rigid cover has a domed shape.

7. The method of claim 3, further comprising forming the rigid cover by spray molding a polymeric coating onto a distal face of the panel buttons.

8. The method of claim 1, further comprising: wherein said creating the panel buttons includes forming a socket within each of the panel buttons; securing a ball to the outer surface of the shell; and inserting the ball into the socket.

9. The method of claim 1, wherein: said creating the panel buttons includes forming a convex shaped chamber in each of the panel buttons; the chamber is configured to accept a female portion of a mechanical snap; and said attaching includes securing the female portion of the mechanical snap to a male portion of the mechanical snap.

10. The method of claim 1, wherein: said creating the panel buttons include forming downward extending projections with a series of annular grooves on each of the panel buttons; and said attaching includes securing the panel buttons of the outer surface of the shell with fasteners.

11. The method of claim 10, wherein the fasteners include screws.

12. The method of claim 1, further comprising: inserting resilient material between the lateral edges of the adjacent panel buttons.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0005] FIG. 1 is a perspective view of a helmet according to one embodiment of the invention.

[0006] FIG. 2 is a perspective view of a panel button according to one embodiment of the invention.

[0007] FIG. 3 is side view of panel buttons that may be used to practice alternative embodiments of the invention.

[0008] FIGS. 4 and 5 are perspective views of shells that may be used to practice alternative embodiments of the invention.

[0009] FIG. 6 is a perspective view of a football helmet and face mask according to one embodiment of the invention.

[0010] FIG. 7 is a cross-sectional view of adjacent lateral edges of panel buttons according to three alternative embodiments of the invention. The lateral edges are shown aligned with a directly adjacent panel button.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

[0011] For the purpose of promoting an understanding of the invention, reference will now be made to the embodiments of the invention illustrated in the drawings and specific language will be used to describe them. It should be understood that no limitation of the scope of the invention is intended by using specific language. Alterations and modifications to the helmet or the parts of the helmet illustrated in the drawings are also included in the invention if the claims at the end of this specification read upon a helmet that has those alterations and modifications.

[0012] FIG. 1 shows a helmet 10 according to one embodiment of the invention. Helmet 10 includes a shell 11 and a plurality of panel buttons 12 attached to the outer surface of shell 11. Directing your attention to FIG. 2, each panel button such as panel button 13 in FIG. 2 has a proximal side 17, a distal face 20, and a lateral edge 19. The panel buttons are preferably made of a flexible material such as a rubber or suitable plastic that has flexible or elastic properties. The panel buttons also preferably include a rigid covering 24 made of, for example, a polycarbonate resin fixedly secured over the top of the flexible material that otherwise comprises a majority of each panel button. Both the panel button and the optional rigid covering are typically fabricated by injection molding. But it is, however, contemplated that a polymeric coating could be sprayed on the distal face of each panel button after the panel button is molded to form the rigid covering in situ, rather than molding the rigid covering separately and later attaching it to the distal face of the panel button with, for example, glue or mechanical fasteners.

[0013] The distal face 20 of the panel buttons used to practice this invention can have a variety of profiles. The distal face can be flat, concave, or convex, but is preferably convex in the form of a dome or cone. The distal face can also be smooth, but it is also contemplated that the distal face is composed of individual plane surfaces or facets. The panel button shown in FIG. 2 depicts a distal face 20 with a total of six facets. Facets 21, 22, and 23 are shown and the other three facets completing distal face 20 are not shown.

[0014] The distal face 20 of the panel buttons used to practice this invention can also have a variety shapes. For example, the panel buttons can have a regular shape such as the hexagonal shape as shown in FIGS. 1 and 6. The panel buttons, however, could also be circular, triangular, square, octagonal, or even be irregular polyhedrons as the invention is not limited by the particular shape of each panel button.

[0015] Panel buttons of different shapes or profiles may also be mounted on the same helmet. There is no need for all the panel buttons to have the same overall shape or profile in order to practice the invention.

[0016] The panel buttons used to practice this invention are pivotally secured to the shell 11. The embodiment of the panel button depicted in FIG. 2 is a panel button 13 attached to the outer surface 15 of shell 11 with a living hinge 16. The proximal side 17 of panel button 16 is generally convex. The proximal side 17, however, does not completely narrow at the apex of the convex shape in this particular embodiment of the invention. Rather, the proximal side 17 narrows to a generally cylindrical web 26 then expands to a generally round base 27, with base 27 being fixedly secured the outer surface 15 of shell 11. Base 27 is for example, fixedly secured to the outer surface 15 of shell with a screw 58 (FIG. 3) or similar mechanical fastener. Fashioned in this manner, the web 26 provides a flexure bearing locus around a central axis, or more simply a pivot, around which the panel button 13 can swivel in a multiple number of planes once it is attached to the outer surface 15 of shell 11.

[0017] One can practice this invention by pivotally attaching the proximal side 17 of panel button 12 to the outer surface of shell 11 by means other than a living hinge. For example, four additional means by which a practitioner of this invention might pivotally secure a panel button is shown in FIG. 3. A first of these is the method by which panel button 30 is attached. The proximal side 31 of panel button 30 includes a downward-extending projection 32 with a bore 33 therein that is sized to accept rivet 34. Downward extending projection 32 is integrally formed with the same flexible material as the majority of the panel button and optionally also includes a reinforcing spring 35 around which panel button 30 is molded. Fashioned in this manner, the downward extending projection provides a flexure bearing locus, or pivot, around which panel button 30 can swivel in a multiple number of planes.

[0018] A second of these is the method by which panel button 38 is attached in FIG. 3. The proximal side 39 is generally convex shaped with a spherical socket 40 formed therein, preferably near the apex, that is sized to accept ball 41. Ball 41 is then secured to the outer surface of shell 11 by mechanical fastener 42, such a screw, rivet, or integral post. Fashioned in this manner, the ball-and-socket joint formed by spherical socket 40 and ball 41 provides a bearing locus, or pivot, around which panel button 38 can swivel in a multiple number of planes.

[0019] A third of these is the method by which panel button 44 is attached in FIG. 3. The proximal side 45 is generally convex shaped with a chamber 46 formed therein, preferably near the apex, that is sized to accept the female portion 47 of mechanical snap 49. The convex-shaped proximal side 45 of panel button 44 is formed with the same flexible material as the majority of the panel button. Female portion 47 of mechanical snap 49 is then attached by engaging it with the male portion 48 of mechanical snap 49. Fashioned in this manner, the chamber 46 and mechanical snap 49 provides a bearing local or pivot, around which panel button 44 can swivel in a multiple number of planes.

[0020] A fourth of these is the method by which panel button 50 is attached in FIG. 3. The proximal side 51 includes a downward extending projection 52 with a series of annular grooves 53 cut therein as well as a central bore 54. Central bore 54 is sized to accept a rivet or screw 55. The annular grooves increase the flexibility of downward extending projection 52. This embodiment may also optionally include a reinforcement member 56 to limit the ability of projection 52 to flex. Nevertheless and fashioned in this manner, the downward extending projection provides a flexure bearing locus, or pivot, around which panel button 50 can swivel in a multiple number of planes.

[0021] The method by which each of a plurality of panel buttons 12 (FIG. 1) is attached to the outer surface 15 of shell 11 does not have to be uniform. It is contemplated by this invention that the method of attachment could be the same or different depending, for example, on the desire to have some panel buttons to have a greater resistance to pivoting than other panel buttons located on the same helmet.

[0022] FIG. 4 shows an example of the shell 11 that may be used to practice this invention. The shell may optionally contain openings 65 and 66 to allow access to wearer's ears. The plurality of smaller holes; for example holes 68, 69, and 70; are placed in the shell 11 to mount the plurality of panel buttons on the exterior of shell 11. The shell 11 is made of a rigid material, such as polycarbonate, and is typically manufactured by injection molding.

[0023] An alternate version of the shell 11 that may be used to practice this invention is depicted in FIG. 5. The shell 11 in this embodiment contains additional openings; such as openings 76, 77, and 78; to provide additional ventilation in the helmet.

[0024] Another embodiment of the invention is shown in FIG. 6. In this embodiment of the invention the lateral edges of the panel buttons are generally aligned with directly adjacent panel buttons. The gap between each panel button, for example the gap at 80 in FIG. 6, is preferably 3/16 of an inch or less.

[0025] But a gap 80 is not necessary to practice the invention. It is also contemplated that the gap between adjacent panel buttons is filled, or generally absent, to give the helmet a smooth appearance. This may be accomplished by eliminating the gap altogether. Or alternatively, could be accomplished by filling the gap between directly adjacent panel buttons with other material. Referring to FIG. 7, a first lateral edge 84 of one panel button could be extended with rubber foam 85 to mate with a second lateral edge 86 of a second panel button that is likewise extended with rubber foam 87. Rubber foam extension 85 and 87 thusly fill the gap between adjacent panel buttons by being sufficiently large to touch.

[0026] In an alternative embodiment, the gap between two directly adjacent panel buttons is filled by covering that gap with a sealing strip 89 as also shown in FIG. 7. Sealing strip 89 could be held in place by friction, but alternatively could also be glued to one or both panel buttons.

[0027] In yet another alternative embodiment, the gap between two directly adjacent panel buttons is filled by placing a plastic or rubber insert between directly adjacent panel buttons. For example and again referring to FIG. 7, the gap between a first lateral edge 90 and a second lateral edge 91 could be filled with a rubber insert that has a general “I” shaped cross section. The top flange 92 of the insert serves to cover the gap between directly adjacent panel buttons. The bottom flange 93 of the insert serves to hold the insert in place and could be optionally mounted to the outer surface 15 of shell 11.

[0028] The protective helmet described in this invention is designed to create a misdirection of energy and shock absorption to reduce the acceleration of mass at impact. The misdirection disperses and dissipates energy by the interruption, transference, and absorption of the kinetic energy. The bumper effect slows down the mass before impact.

[0029] The exterior surface of the helmet does not have a traditional one piece shell. As depicted in the figures it is divided into individually shaped panels, arranged in a pattern or design. Each panel varies in size from very small up to approximately 5 inches in width. The panels are arranged equally spaced.

[0030] The shell to which the panels are attached is preferably made of one piece. It should be of sufficient size to include interior padding for the comfort and protection of the wearer. Generally slightly smaller than a standard helmet, it can be full coverage, or egg shell design, skeletal, webbed, or ventilated.

[0031] Each outer panel or panel button has an exterior composed of lightweight resilient polycarbonate or plastic type of material. These panels are fused to the button structure, which are made of plastic or strong foam rubber material. And as described previously, are secured to a one-piece inner shell. Typically, the inner shell and outer protective coating or shell are made of the same material. Each panel button is then attached to the shell with a centered fastener.

[0032] The shape of the panel buttons' exterior is preferably convex or domed. The effect of the shape creates a misdirected flow of energy at impact. The panel button flexes laterally as well as inwardly, which breaks up the straight line energy before it reaches the encompassing inner shell, and then the wearer's head and neck. This creates a reduction in acceleration, before the potentially damaging impact, which reduces force. When significant force is applied to a panel button, it flexes laterally and impacts the adjacent panel button(s), which transfers and disperses kinetic energy originated by initial impact. If the impact is substantial, then multiple panel buttons will flex, impact, transfer, and disperse.

[0033] The edges of the panel buttons are wrapped and bonded with a durably covered foam material that resists tearing. The multi-function or application of the wrap is to create the illusion of a one-piece outer shell while absorbing and dissipating energy during the lateral interruption and transfer of kinetic energy. This is accomplished with the shape and design of the panel buttons.

[0034] Considering the forgiving and deflective nature of the domed panel buttons, there will be 2-3 or more opportunities to misdirect impact energy away from the head and neck. This system self regulates to greatly reduce trauma and G-force delivered to the head and neck area. Immediately after impact the panel buttons return to original shape and position, ready for the next impact.

[0035] While this invention has been illustrated and described in detail in the drawings and description, this is to be considered as illustrative and not restrictive in character. It should be understood that only the presently preferred embodiments have been shown and described and that all changes and modifications that come within the spirit of the invention are protected.