US4133055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective helmet with thermal liner
Assignee: ENERGY SYSTEMS CORP
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Filing: 1977-08-03
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Granted: 1979-01-09
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Expires: 1997-08-03
Abstract
Abstract The invention provides a thermal liner for a protective helmet, a helmet which includes such a liner removably positioned therein, and a container for the freezing and storage of a plurality of such liners. The thermal liner includes a matrix of sufficient length and width which is sufficiently deformable so as to be insertable within a helmet in spaced relation to its inner wall to confrom generally with the contour of the inner wall and to be coextensive with the major portion of the inner wall area. The liner is provided with a plurality of pockets in the matrix each of which is sealed relative to the other pockets. A heat exchange medium, preferably in its frozen state such as ice, is disposed within the pockets of the liner.
Inventors
- 👤 William H. Zebuhr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:48
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10; A42B3/12; A42B3/121; A42B3/28; A42B3/285; A42C; A42C5/00; A42C5/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
142 words
A protective helmet comprising: a shell including an inner wall which is contoured for mounting on the head of a person in protective relation thereto; an impact absorbing material positioned within said shell in face-to-face abutting relation with said inner wall throughout at least a substantial portion of the surface thereof; and having an inner surface conforming to the head of the wearer a shaped matrix having a plurality of individual pockets, each of which contains a heat exchange medium said matrix being located within a correspondingly formed recess in said impact absorbing material, and extending over an area coextensive with the major portion of the area of said surface of said impact absorbing material, said matrix being flexible to assume a shape conforming to that of said impact material, and means for removably securing said matrix to said impact absorbing material.
Claim 2
Dependent Claim
142 words
A protective helmet comprising: a shell including an inner wall which is contoured for mounting on the head of a person in protective relation thereto; an impact absorbing material positioned within said shell in face-to-face abutting relation with said inner wall throughout at least a substantial portion of the surface thereof; and having an inner surface conforming to the head of the wearer a shaped matrix having a plurality of individual pockets, each of which contains a heat exchange medium said matrix being located within a correspondingly formed recess in said impact absorbing material, and extending over an area coextensive with the major portion of the area of said surface of said impact absorbing material, said matrix being flexible to assume a shape conforming to that of said impact material, and means for removably securing said matrix to said impact absorbing material.
Claim 3
Dependent Claim
30 words
The protective helmet according to claim 1, wherein said matrix includes a pair of superposed sheets joined to each other along a pattern of regions which define said pockets therebetween.
Claim 4
Dependent Claim
13 words
The protective helmet according to claim 2, wherein said sheets are joinable releasably.
Claim 5
Dependent Claim
18 words
The protective helmet according to claim 2, wherein said matrix is deformable along said regions between the pockets.
Claim 6
Dependent Claim
17 words
The protective helmet according to claim 1, wherein said matrix is fabricated of a synthetic plastics material.
Claim 7
Dependent Claim
19 words
The protective helmet according to claim 5, wherein said synthetic plastics material is selected from polyethylene, polypropylene and polyvinylchloride.
Claim 8
Dependent Claim
12 words
The protective helmet according to claim 1, wherein said pockets contain ice.
References Cited (Backward Citations)
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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) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |