Patent US1961986A successfully refreshed from Google Patents.
Patent US6560787B2 successfully refreshed from Google Patents.
US6560787B2
Expired / Lapsed
US
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Safety helmet
Assignee: Individual
•
Filing: 2001-08-31
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Granted: 2003-05-13
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Expires: 2021-08-31
Abstract
Abstract An improved safety helmets designed and manufactured to protect the head and brain from both linear and rotational impact energy. The helmet designed and manufactured to diffuse or absorb impact energy in a uniform manner around the head and allows for effective reuse of the helmet after multiple impacts. The safety helmet is constructed of layers of polyurethane, monoprene gel, polyethylene and either polycarbonate or polypropylene. The safety helmet manufactured and designed of these materials protect the brain from both linear and rotational impact energy and diffuse or absorb impact energy in a uniform manner around the head.
Inventors
- 👤 Irma D. Mendoza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:48
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/06; A42B3/066; A42B3/062; A42B3/063; A42B3/064
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
36 words
A safety helmet comprising: a. a polyethene layer; b. a gel layer abuttingly contacting the polyethene layer; c. a polyurethane layer abuttingly contacting the gel layer; and d. a polycarbonate layer abuttingly contacting the polyurethane layer.
Claim 2
Dependent Claim
36 words
A safety helmet comprising: a. a polyethene layer; b. a gel layer abuttingly contacting the polyethene layer; c. a polyurethane layer abuttingly contacting the gel layer; and d. a polycarbonate layer abuttingly contacting the polyurethane layer.
Claim 3
Dependent Claim
18 words
The safety helmet of claim 1 , wherein the gel layer comprises a styrenic block copolymer thermoplastic elastomer.
Claim 4
Dependent Claim
14 words
The safety helmet of claim 1 wherein said polycarbonate layer is a polypropylene layer.
Claim 5
Dependent Claim
18 words
The safety helmet of claim 1 wherein said polyurethane layer is no less than about ½ inch thick.
Claim 6
Dependent Claim
23 words
The safety helmet of claim 1 wherein said gel layer is composed of monoprene gel of no less than about ½ inch thick.
Claim 7
Dependent Claim
18 words
The safety helmet of claim 1 wherein said polyethene layer is no less than about ½ inch thick.
Claim 8
Dependent Claim
20 words
The safety helmet of claim 1 wherein said the polycarbonate layer is no less than about {fraction (1/16)} inch thick.
Claim 9
Dependent Claim
22 words
The safety helmet of claim 1 wherein said polycarbonate layer is a polypropylene layer no less than about {fraction (1/16)} inch thick.
Claim 10
Dependent Claim
78 words
A safety helmet comprising: a. a polyethene layer no less than about ½ inch in thickness; b. a gel layer no less than about ½ inch in thickness, the gel layer abuttingly contacting the polyethene layer, c. a polyurethane layer no less than about ½ inch in thickness, the polyurethane layer abuttingly contacting the gel layer; and d. a polycarbonate layer no less than about {fraction (1/16)} inch in thickness, the polycarbonate layer abuttingly contacting the polyurethane layer.
Claim 11
Dependent Claim
78 words
A safety helmet comprising: a. a polyethene layer no less than about ½ inch in thickness; b. a gel layer no less than about ½ inch in thickness, the gel layer abuttingly contacting the polyethene layer, c. a polyurethane layer no less than about ½ inch in thickness, the polyurethane layer abuttingly contacting the gel layer; and d. a polycarbonate layer no less than about {fraction (1/16)} inch in thickness, the polycarbonate layer abuttingly contacting the polyurethane layer.
Claim 12
Dependent Claim
12 words
The safety helmet of claim 9 wherein said polycarbonate layer is polypropylene.
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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) | 2006-05-12 | 2006-11-11 | 2007-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-05-12 | 2010-11-11 | 2011-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-05-12 | 2014-11-11 | 2015-05-13 | $7700.00 | Window Closed / Lapsed |