US5794271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helmet shell structure
Assignee: Individual
•
Filing: 1996-10-17
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Granted: 1998-08-18
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Expires: 2016-10-17
Abstract
Abstract A helmet shell structure utilizing a first inner layer of epoxy resin shaped into a head covering of a desired size and configuration. A second layer of woven fabric is placed atop the first layer of epoxy. A third outer layer of epoxy resin is laid atop the second layer and is cured to a transparent state such that the second layer of woven fabric is visible through the third outer layer of cured epoxy.
Inventors
- 👤 Dale Hastings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:24
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; A; A42; A42B; A42B3/00; A42B3/04; A42B3/06; A42B3/061; A42B3/062; A42B3/063; B32B27/04; B32B5/00; B32B5/02; B32B5/024; B32B5/22; B32B5/24; B32B5/26; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/50; B32B2307/558; B32B2437/00; B32B2437/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
A helmet shell structure, comprising: a. first inner layer of epoxy resin shaped into a structure of desired size and configuration; b. a second layer of woven fabric laid atop the first layer of epoxy; c. a third outer layer of epoxy resin laid atop said second layers, said epoxy resin of said third outer layer being in situ cured to a transparent state over said second layer, wherein said second layer of woven fabric is visible through said outer layers of in situ cured epoxy resin, said third outer layer of in situ cured epoxy resin penetrating said second layer of woven fabric; and d. a fourth layer of fiberglass interposed said first layer of epoxy resin and second layer of woven fabric, said fourth layer extending over only a portion of the shell, said second layer being visible through said third outer layer of in situ cured epoxy where said fourth layer of fiberglass extends.
Claim 2
Dependent Claim
157 words
A helmet shell structure, comprising: a. first inner layer of epoxy resin shaped into a structure of desired size and configuration; b. a second layer of woven fabric laid atop the first layer of epoxy; c. a third outer layer of epoxy resin laid atop said second layers, said epoxy resin of said third outer layer being in situ cured to a transparent state over said second layer, wherein said second layer of woven fabric is visible through said outer layers of in situ cured epoxy resin, said third outer layer of in situ cured epoxy resin penetrating said second layer of woven fabric; and d. a fourth layer of fiberglass interposed said first layer of epoxy resin and second layer of woven fabric, said fourth layer extending over only a portion of the shell, said second layer being visible through said third outer layer of in situ cured epoxy where said fourth layer of fiberglass extends.
Claim 3
Dependent Claim
20 words
The structure of claim 1 in which said third layer of epoxy resin penetrates said fourth layer of fiber glass.
Claim 4
Dependent Claim
35 words
The structure of claim 1 in which said second layer of woven fabric is selectively from the group consisting of aramid based polymer, carbon fibers, and a mixture of aramid based polymer and carbon fibers.
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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) | 2001-08-17 | 2002-02-16 | 2002-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-17 | 2006-02-16 | 2006-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-17 | 2010-02-16 | 2010-08-18 | $7700.00 | Window Closed / Lapsed |