Patent US3934271A successfully refreshed from Google Patents.
US3934271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective helmet
Assignee: Individual
•
Filing: 1974-11-27
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Granted: 1976-01-27
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Expires: 1994-11-27
Abstract
Abstract Various embodiments of energy absorbing, protective helmets constructed of resilient foam means covered with a tough, pliable surface coating. The helmets are adapted to be worn on a person's head and have openings therein generally conforming to a person's eyes, ears, nose, mouth and chin. In modifications of the helmet, fixed or removable transparent shield means are mounted across the front openings and hemispherical plate means can be disposed at the top of the helmet. Other modifications of the helmet provide guard means across the front openings.
Inventors
- 👤 Jhoon Rhee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:50
CPC Classifications
A; A63; A63B; A63B71/00; A63B71/08; A63B71/10; A42; A42B; A42B3/00; A42B3/04; A42B3/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A protective helmet adapted to be worn on a person's head and capable of absorbing energy and generally conforming to the shape of a person's head, comprising resilient foam means covered with a tough, pliable surface casing, openings in said helmet generally conforming to the person's ears and chin, one large opening outlining the face portion of the head including the eyes, nose, mouth and chin, the rear of said helmet being generally open and including a flap member adapted to protect the rear of
Claim 2
Dependent Claim
85 words
A protective helmet adapted to be worn on a person's head and capable of absorbing energy and generally conforming to the shape of a person's head, comprising resilient foam means covered with a tough, pliable surface casing, openings in said helmet generally conforming to the person's ears and chin, one large opening outlining the face portion of the head including the eyes, nose, mouth and chin, the rear of said helmet being generally open and including a flap member adapted to protect the rear of
Claim 3
Dependent Claim
27 words
The helmet of claim 1 wherein the upper part of said helmet has a pair of cross-members adapted to retain the helmet on a person's head and
Claim 4
Dependent Claim
11 words
The helmet of claim 1 wherein said helmet has additional ventilation
Claim 5
Dependent Claim
13 words
The helmet of claim 1 wherein said resilient material is a plastic foam
Claim 6
Dependent Claim
23 words
The helmet of claim 1 wherein a curved transparent shield is permanently disposed across said large opening and spaced therefrom by spacer means.
Claim 7
Dependent Claim
11 words
The helmet of claim 1 wherein said helmet comprises a hemispherical
Claim 8
Dependent Claim
24 words
The helmet of claim 6 wherein said plate means is disposed around openings in the top portion of said helmet with provision for ventilation
Claim 9
Dependent Claim
17 words
The helmet of claim 1 wherein a curved transparent shield is detachably mounted across said large opening.
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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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |