Patent US4808469A successfully refreshed from Google Patents.
US4808469A
Expired / Lapsed
US
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Energy absorbing polyurethane composite article
Assignee: SORBOTHANE Inc
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Filing: 1985-05-09
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Granted: 1989-02-28
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Expires: 2005-05-09
Abstract
Abstract The present invention relates to a light weight energy absorbing and damping device having a predetermined configuration, which is a composite of a foam element, and at least one visco-elastic element, each said visco-elastic element being permanently affixed by chemical bonding in a portion of the device through which energy is normally transmitted. The device may be configured to all or part of a shoe part or insole, a glove, a seat or seat pad, a helmet or helmet liner, a dash-board liner, head support pad or other energy absorbing or protection devices.
Inventors
- 👤 Maurice Hiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:26
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/30; F16F9/306; A; A41; A41D; A41D31/00; A41D31/04; A41D31/28; A42; A42B; A42B3/00; A42B3/04; A42B3/10; A42B3/12; A42B3/125; A43; A43B; A43B13/00; A43B13/14; A43B13/18; A43B13/187; B; B32; B32B; B32B27/00; B32B27/40; B32B5/00; B32B5/18; B32B7/00; B32B7/04; B32B7/10; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/50; B32B2307/56; B32B2307/70; B32B2307/714; B32B2307/7145; B32B2437/00; B32B2437/02; B32B2437/04; B32B2605/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249991; Y10T428/31504; Y10T428/31536; Y10T428/31551; Y10T428/31554
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
76 words
A light weight energy absorbing and damping device having a predetermined configuration and an overall density of less than 1 which is a composite of a polyurethane foam element, and at least one polyurethane viscoelastic element, each said visco-elastic element being permanently bonded to said foam by the formation of urethane bonds at the interface between said foam element and each said visco-elastic element in a portion of the device through which energy is normally transmitted.
Claim 2
Dependent Claim
76 words
A light weight energy absorbing and damping device having a predetermined configuration and an overall density of less than 1 which is a composite of a polyurethane foam element, and at least one polyurethane viscoelastic element, each said visco-elastic element being permanently bonded to said foam by the formation of urethane bonds at the interface between said foam element and each said visco-elastic element in a portion of the device through which energy is normally transmitted.
Claim 3
Dependent Claim
38 words
The device of claim 1 wherein said foam is prepared from a precursor formulation having a stoichiometric excess of hydroxyl radicals, and said visco-elastic element is prepared from a polyurethane precursor formulation having a stoichiometric excess of isocyanate.
Claim 4
Dependent Claim
39 words
The device of claim 1 wherein said foam is prepared from a precursor formulation having a stoichiometric excess of isocyanate radicals, and said visco-elastic element is prepared from a polyurethane precursor formulation having a stoichiometric excess of hydroxyl radicals.
Claim 5
Dependent Claim
31 words
The device according to claim 2 wherein said composite is a shoe insole, and said visco-elastic elements are positioned to reduce transmission of energy to the heel and the metatarsal heads.
Claim 6
Dependent Claim
31 words
The device according to claim 3 wherein said composite is a shoe insole, and said visco-elastic elements are positioned to reduce transmission of energy to the heel and the metatarsal heads.
Claim 7
Dependent Claim
34 words
The device according to claim 2 wherein said composite is a part of a glove, and said visco-elastic elements are positioned to reduce transmission of energy to the palm and finger of the hand.
Claim 8
Dependent Claim
34 words
The device according to claim 3 wherein said composite is a part of a glove, and said visco-elastic elements are positioned to reduce transmission of energy to the palm and finger of the hand.
Claim 9
Dependent Claim
30 words
The device according to claim 2 wherein said composite is a part of a bicycle seat, and said visco-elastic elements are positioned to reduce transmission of energy to the coccyx.
Claim 10
Dependent Claim
30 words
The device according to claim 3 wherein said composite is a part of a bicycle seat, and said visco-elastic elements are positioned to reduce transmission of energy to the coccyx.
Claim 11
Dependent Claim
33 words
The device according to claim 2 wherein said composite is a part of a seat pad, and said visco-elastic elements are positioned to reduce transmission of energy to the coxyx and the illiac.
Claim 12
Dependent Claim
33 words
The device according to claim 3 wherein said composite is a part of a seat pad, and said visco-elastic elements are positioned to reduce transmission of energy to the coccyx and the illiac.
Claim 13
Dependent Claim
33 words
The device according to claim 2 wherein said composite is a part of an arm rest, and said visco-elastic elements are positioned to reduce transmission of energy to the elbow and the shoulder.
Claim 14
Dependent Claim
33 words
The device according to claim 3 wherein said composite is a part of an arm rest and said visco-elastic elements are positioned to reduce transmission of energy to the elbow and the shoulder.
Claim 15
Dependent Claim
36 words
The device according to claim 2 wherein said composite is a part of a head-neck support, and said visco-elastic elements are positioned to reduce transmission of energy to the neck and the base of the skull.
Claim 16
Dependent Claim
36 words
The device according to claim 3 wherein said composite is a part of a head-neck support, and said visco-elastic elements are positioned to reduce transmission of energy to the neck and the base of the skull.
Claim 17
Dependent Claim
32 words
The device according to claim 2 wherein said composite is a helmet liner, and said visco-elastic elements are positioned to reduce transmission of energy to the temple, the skull, or the head.
Claim 18
Dependent Claim
32 words
The device according to claim 3 wherein said composite is a helmet liner, and said visco-elastic elements are positioned to reduce transmission of energy to the temple, the skull, or the head.
Claim 19
Dependent Claim
14 words
The device according to claim 2 wherein said composite has bacteriostatic and fungistatic propeties.
Claim 20
Dependent Claim
14 words
The device according to claim 3 wherein said composite has bacteriostatic and fungistatic properties.
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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) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |