Apparel – Guard or protector – For wearer's head
Patent
1983-04-19
1986-04-15
Nerbun, Peter
Apparel
Guard or protector
For wearer's head
2 6, 2424, A42B 302
Patent
active
045817740
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE DISCLOSURE
1. Field of the Invention
The present invention relates to a motorcycle helmet which is fitted with a retaining device which allows it to improve its position on a user as well as assuring that it will remain on the user.
2. Discussion of Prior Art
Conventional helmet fasteners comprise a simple chin strap comprised of two ribbons of material or strips of leather which are integrally attached at one of their respective ends to the base of the helmet shell and at two lateral points away on a on an opposed portion of the shell. Free ends of the ribbons or strips fit together under the chin of the user and are attached by a buckle or other suitable element. Besides the fact that these types of helmets do not offer protection for the lower part of the chin of the user, this uncomfortable apparatus is even more so when tightened to a degree sufficient to insure that it will effectively will maintain the helmet on the user. Even in this case, the points at which the chin straps are anchored to the helmet shell are all offset with respect to the transverse median plane of the brain pan of a user, and the helmet will therefore have a tendency when it undergoes a shock to rock frontwardly from the back of the helmet after it rotatably moves about an axis which extends generally near the ears of the wearer of the helmet. Such an apparatus does not prevent the helmet from leaving the head of the user when the helmet undergoes a simple shock or after bouncing. Moreover, when the helmet undergoes a pulling force directed from the base of the helmet towards its top, the force is integrally transmitted to the lower portion of the chin of the user, the pressure being dangerous to the weak surface of the chin strap through which the pressure is applied. This apparatus is as uncomfortable as it is dangerous and has previously been improved by the use of a helmet fastening apparatus which essentially comprises a rigid skirt formed as an extension of the base of the helmet shell and which comprises two journalled sections, one located in the front of and the other behind, the shell. These two sections are locked by their moveable ends along lateral zones of the same shell. Even this apparatus, however, is inconvenient. The elements which permit activation of the locking apparatus are easily accessible from the outside of the helmet, and when they undergo a shock can contact the rough portion of the ground, with unlocking and possible opening of at least one section of each half skirt resulting therefrom. In addition, when the helmet is put on and removed, particularly if the user of the helmet is dressed in hot clothes such as pullovers or jackets having turned up collars (which is normal for a motorcyclist), the users will be uncomfortable due to the amplitude of movement described by the ends of each half-skirt when it is opened and closed. The presence of small tongues, equipped with hooks and integrally attached to the ends of the rear half-skirt, render the operation more delicate, since garments, e.g., sweaters, often rip when one of the hooks unfortunately engages a stitch of such garment. Lastly, the use of a rigid skirt makes it necessary to provide protection for the neck of the user against contact with the section of the skirt via a shock absorbing system and a thick, flexible from filling which is interposed between it and the neck of the wearer of the helmet. Because of this, the perimeter of the section defined by the edge of the skirt is itself substantially greater than the perimeter of the neck that it is intended to surround. Retention is thus not assured in an effective fashion, particularly at the front of the helmet, except by the flexing foam filling resting along its upper surface against the lower surface of the chin of the user. Even the smallest shock which exposes the helmet to a torque suffices to deform the filling in such a way that the user can see his helmet if not removed from his head, at least rock forwardly from the rear until the retention system rests agains
REFERENCES:
patent: 4290150 (1981-09-01), Guerre-Berthelot
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