US3797039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety helmet
Assignee: Individual
•
Filing: 1972-04-10
•
Granted: 1974-03-19
•
Expires: 1992-04-10
Abstract
Abstract A safety helmet is provided with a crown suspension comprised of relatively inelastic crown straps secured to the helmet shell with energy-absorbing links. The links incorporate an energyabsorbing midsection designed to deform and elongate under substantially constant transmitted force conditions to a predetermined point and to thereafter rapidly transmit higher impact forces with only slight further elongation.
Inventors
- 👤 H Penberthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:19
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10; A42B3/14; Y; Y10; Y10T; Y10T24/00; Y10T24/10; Y10T24/34; Y10T24/3401; Y10T24/3416
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
97 words
A safety helmet having a helmet shell and means for supporting the helmet shell in spaced relation to the wearers head; an energy absorbing link secured to the helmet shell and to the supporting means, said link fabricated to provide opposite ends for securement to the shell and supporting means, and an energy absorbing mid-section comprising two side-by-side serpentine segments generally transversely to the link said link means fabricated in a wire form wherein the free ends of the wire form are secured together to provide a closed loop configuration and are oriented transversely to the link.
Claim 2
Dependent Claim
97 words
A safety helmet having a helmet shell and means for supporting the helmet shell in spaced relation to the wearers head; an energy absorbing link secured to the helmet shell and to the supporting means, said link fabricated to provide opposite ends for securement to the shell and supporting means, and an energy absorbing mid-section comprising two side-by-side serpentine segments generally transversely to the link said link means fabricated in a wire form wherein the free ends of the wire form are secured together to provide a closed loop configuration and are oriented transversely to the link.
Claim 3
Dependent Claim
99 words
A safety helmet having a helmet shell in a plurality of crown straps supporting the helmet shell in spaced relation to a wearers head with each crown strap being provided with anchor loops, an energy absorbing link fabricated to provide opposite ends for anchoring and an energy absorbing mid-section comprising at least one serpentine segment oriented generally transversely to the link, said link being fabricated in a wire form with one anchoring end and a segment oriented transversely to the link and secured to the crown strap anchor loop and the other anchoring end secured to the helmet shell.
Claim 4
Dependent Claim
99 words
A safety helmet having a helmet shell in a plurality of crown straps supporting the helmet shell in spaced relation to a wearers head with each crown strap being provided with anchor loops, an energy absorbing link fabricated to provide opposite ends for anchoring and an energy absorbing mid-section comprising at least one serpentine segment oriented generally transversely to the link, said link being fabricated in a wire form with one anchoring end and a segment oriented transversely to the link and secured to the crown strap anchor loop and the other anchoring end secured to the helmet shell.
Claim 5
Dependent Claim
104 words
A safety helmet and a helmet shell and means for supporting the helmet shell in spaced relation of the wearers head, an energy absorbing link fabricated to provide opposite ends for anchoring and an energy absorbing mid-section comprising two side-by-side serpentine segments oriented generally transversely to the link, said link being fabricated in a wire form wherein the free ends of the wire form are formed to provide two anchoring points at one anchoring end for attachment to the helmet shell; and wherein one anchoring end is secured to the helmet shell and the other anchoring end secured to the helmet shell supporting means.
Claim 6
Dependent Claim
104 words
A safety helmet and a helmet shell and means for supporting the helmet shell in spaced relation of the wearers head, an energy absorbing link fabricated to provide opposite ends for anchoring and an energy absorbing mid-section comprising two side-by-side serpentine segments oriented generally transversely to the link, said link being fabricated in a wire form wherein the free ends of the wire form are formed to provide two anchoring points at one anchoring end for attachment to the helmet shell; and wherein one anchoring end is secured to the helmet shell and the other anchoring end secured to the helmet shell supporting means.
Claim 7
Dependent Claim
94 words
A safety helmet and a helmet shell and means for supporting the helmet shell in spaced relation to the wearers head, an energy absorbing link fabricated to provide opposite ends for anchoring an energy absorbing mid-section comprising at least one serpentine segment oriented generally transversely to the link, said link being fabricated in a wire form wherein the free ends of the wire form are formed to provide an anchoring point at each anchoring end wherein the link is incorporated into the helmet shell supporting means to provide a principal means of impact resistance.
Claim 8
Dependent Claim
94 words
A safety helmet and a helmet shell and means for supporting the helmet shell in spaced relation to the wearers head, an energy absorbing link fabricated to provide opposite ends for anchoring an energy absorbing mid-section comprising at least one serpentine segment oriented generally transversely to the link, said link being fabricated in a wire form wherein the free ends of the wire form are formed to provide an anchoring point at each anchoring end wherein the link is incorporated into the helmet shell supporting means to provide a principal means of impact resistance.
Claim 9
Dependent Claim
73 words
In a safety helmet comprised of a helmet shell and a crown suspension, the crown suspension comprising relatively inelastic means for supporting the helmet shell in spaced relation to a wearer''s head and energy-absorbing means, the improvement comprising the provision of a plurality of energy-absorbing links as said energy-absorbing means, each link having end anchor point sections and an energy-absorbing midsection comprising at least one serpentine segment oriented generally transversely to the link.
Claim 10
Dependent Claim
73 words
In a safety helmet comprised of a helmet shell and a crown suspension, the crown suspension comprising relatively inelastic means for supporting the helmet shell in spaced relation to a wearer''s head and energy-absorbing means, the improvement comprising the provision of a plurality of energy-absorbing links as said energy-absorbing means, each link having end anchor point sections and an energy-absorbing midsection comprising at least one serpentine segment oriented generally transversely to the link.
Claim 11
Dependent Claim
19 words
The helmet of claim 5 wherein each link comprises two side-by-side serpentine segments oriented generally transversely to the link.
Claim 12
Dependent Claim
33 words
The helmet of claim 6 wherein each link is fabricated in a wireform, the free ends of which are secured together to provide a closed loop configuration for attachment to the inelastic means.
Claim 13
Dependent Claim
43 words
The helmet of claim 6 wherein the inelastic means comprises a plurality of crown straps and wherein each link is fabricated in a wireform with one anchoring end comprising a segment oriented generally transversely to the link and secured to a crown strap.
Claim 14
Dependent Claim
30 words
The helmet of claim 6 wherein each link is fabricated in a wireform, the free ends of which are formed to provide two anchoring points attached to said helmet shell.
Claim 15
Dependent Claim
39 words
The helmet of claim 5 wherein each link is fabricated in a wireform, the free ends of which are formed to provide one anchoring point attached to said helmet shell and another anchoring point attached to said inelastic means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |