Patent US5363461A successfully refreshed from Google Patents.
Patent US3599239A successfully refreshed from Google Patents.
US3599239A
Expired / Lapsed
US
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Protective headgear
Assignee: FIBER METAL PRODUCTS Co
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Filing: 1969-10-06
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Granted: 1971-08-17
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Expires: 1989-10-06
Abstract
Abstract An outer shell and a suspension construction for engagement with a wearer''s head and supporting the shell in spaced relation thereto, the suspension being specifically configured by shape and thickness for directionally controlled distention under impact applied to the shell, and the shell being provided with resilient means by shape and thickness for obliquely deflecting an article impinging on the shell.
Inventors
- 👤 David Tatum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:21
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10; A42B3/14; A42B3/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
99 words
A protective headgear comprising a flexible head engaging part adapted to rest on a wearer''s head, an outer shell in spaced relation over said head-engaging part, a plurality of suspender elements spaced circumferentially about and depending from said head-engageable part toward a lower region of said shell, and interfitting connection means on said suspender elements and said shell for suspending the latter in said spaced relation, said shell having a dome portion, a sidewall portion extending circumferentially about said dome portion, and an asymmetrical resilient formation generally centrally of said dome portion for obliquely resiliently deflecting a falling object.
Claim 2
Dependent Claim
99 words
A protective headgear comprising a flexible head engaging part adapted to rest on a wearer''s head, an outer shell in spaced relation over said head-engaging part, a plurality of suspender elements spaced circumferentially about and depending from said head-engageable part toward a lower region of said shell, and interfitting connection means on said suspender elements and said shell for suspending the latter in said spaced relation, said shell having a dome portion, a sidewall portion extending circumferentially about said dome portion, and an asymmetrical resilient formation generally centrally of said dome portion for obliquely resiliently deflecting a falling object.
Claim 3
Dependent Claim
34 words
A protective headgear according to claim 1, said resilient formation being integral with said dome portion and having a spring constant varying in the forwardly and rearwardly direction for effecting said oblique resilient deflection.
Claim 4
Dependent Claim
21 words
A protective headgear according to claim 2, said spring constant decreasing rearwardly for effecting oblique rearward deflection of a falling object.
Claim 5
Dependent Claim
33 words
A protective headgear according to claim 2, in combination with an additional resilient formation in said dome portion surrounding said first-mentioned resilient formation and affording said dome portion an enhanced Belleville spring action.
Claim 6
Dependent Claim
29 words
A protectiVe headgear according to claim 4, in combination with a plurality of columnar formations in said shell sidewall extending downwardly from said additional formation toward respective connection means.
Claim 7
Dependent Claim
21 words
A protective headgear according to claim 5, said resilient and columnar formations being defined by shell portions of various cross sections.
Claim 8
Dependent Claim
33 words
A protective headgear according to claim 4, said resilient formations being defined by internally thickened portions of said shell, the exterior of said shell being smooth to assure predetermined deflection of falling objects.
Claim 9
Dependent Claim
92 words
A shell for protective headgear adapted to be suspended in spaced relation over a wearer''s head and comprising a dome portion, a sidewall portion extending circumferentially about and depending from said dome portion, a resilient formation centrally of said dome portion and configured to provide a spring constant varying in the forwardly and rearwardly direction, for resiliently deflecting a falling object in the forwardly and rearwardly direction, and an additional resilient formation in said dome portion surrounding said first mentioned resilient formation and affording said dome portion an enhanced Belleville spring action.
Claim 10
Dependent Claim
92 words
A shell for protective headgear adapted to be suspended in spaced relation over a wearer''s head and comprising a dome portion, a sidewall portion extending circumferentially about and depending from said dome portion, a resilient formation centrally of said dome portion and configured to provide a spring constant varying in the forwardly and rearwardly direction, for resiliently deflecting a falling object in the forwardly and rearwardly direction, and an additional resilient formation in said dome portion surrounding said first mentioned resilient formation and affording said dome portion an enhanced Belleville spring action.
Claim 11
Dependent Claim
21 words
A protective headgear according to claim 8, said spring constant decreasing rearwardly for effecting obliquely rearwardly deflection of a falling object.
Claim 12
Dependent Claim
26 words
A protective headgear according to claim 8, in combination with a plurality of columnar formations in said shell sidewall extending downwardly from said additional resilient formation.
Claim 13
Dependent Claim
21 words
A protective headgear according to claim 10, said resilient and columnar formations being defined by shell portions of controlled elastic moduli.
References Cited (Backward Citations)
US3041621A
Cited
US3422459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |