Patent US4110847A successfully refreshed from Google Patents.
US4110847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick fastening and adjusting safety clasp especially for safety helmets
Assignee: Renault SA
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Filing: 1977-06-02
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Granted: 1978-09-05
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Expires: 1997-06-02
Abstract
Abstract A rapidly attachable and adjustable safety buckle for a chin strap of a protective helmet having a catch rotatably fixed to the helmet, a hook having one end attached to the chin strap and the other end terminating in a special protuberance, the catch having a cavity therein for receiving the specially shaped protuberance, and means for biasing the buckle toward a closed position with the protuberance being locked into the cavity.
Inventors
- 👤 Alain Dera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:57
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/08; A44; A44B; A44B11/00; A44B11/25; A44B11/28; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45675; Y10T24/45696
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
A rapidly attachable and adjustable safety buckle for a chin-strap of a protective helmet, comprising: a catch molded from rigid plastic and attached at one end to the outer wall of a helmet shell by means of a horizontal axis member allowing limited rotational movement of said catch, an inner face of said catch having a trapezoidal cavity, the sides of which converge towards the horizontal axis, and the outer face of which is pierced at right angles to the said point of convergence by an opening passing through the entire thickness of said catch; and a hook molded from rigid plastic, one end of which is attached to the chin-strap and the other end exhibiting a trapezoidal shape matching that of said cavity in said catch, the other end of the hook terminating in a protuberance fitting the opening which passes through said catch.
Claim 2
Dependent Claim
145 words
A rapidly attachable and adjustable safety buckle for a chin-strap of a protective helmet, comprising: a catch molded from rigid plastic and attached at one end to the outer wall of a helmet shell by means of a horizontal axis member allowing limited rotational movement of said catch, an inner face of said catch having a trapezoidal cavity, the sides of which converge towards the horizontal axis, and the outer face of which is pierced at right angles to the said point of convergence by an opening passing through the entire thickness of said catch; and a hook molded from rigid plastic, one end of which is attached to the chin-strap and the other end exhibiting a trapezoidal shape matching that of said cavity in said catch, the other end of the hook terminating in a protuberance fitting the opening which passes through said catch.
Claim 3
Dependent Claim
65 words
A safety buckle as set forth in claim 1, further comprising a spring for holding said buckle in the position of closing, one end of said spring pressing against a portion of the helmet shell and being wrapped around the axis member of the catch, and the other end of which exerts a tongue on a zone of the catch causing the buckle to close.
Claim 4
Dependent Claim
27 words
A safety buckle as set forth in claim 1, wherein the other end of the catch is in the form of a tab to permit easy manipulation.
Claim 5
Dependent Claim
49 words
A safety buckle as set forth in claim 1, wherein the end of the catch next to the horizontal axis member is pierced by a slot permitting passage of a strap looping about said axis for reinforcement, the other ends of the strap being attached to the helmet shell.
Claim 6
Dependent Claim
70 words
A safety buckle as set forth in claim 1, wherein the hook has at its base a slot permitting passage of the chin-strap, and in its body a cavity holding a cylindrical roller, around which the end of the chin-strap is looped, the resulting configuration resting on a sharp edge formed by the lower side of the cavity to constitute a self-locking arrangement for the free end of the chin-strap.
References Cited (Backward Citations)
US423681A
Cited
US2513592A
Cited
US3145442A
Cited
US3235930A
Cited
US3447163A
Cited
US3514816A
Cited
US3796461A
Cited
US3990113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |