US4347280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorbing sheet material
Assignee: Geos Corp
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Filing: 1981-07-08
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Granted: 1982-08-31
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Expires: 2001-07-08
Abstract
Abstract A thin, sheet material substantially aids in absorbing a mechanical impact or shock--useful in widely disparate applications, e.g., on handle/grips of sports equipment such as bats, rackets, paddles, clubs or the like. The material is formed of a three layer laminate including a central resilient fabric embedded in a low solid-content, large pore polyester or polyether urethane elastomer, bounded by large pore polyurethane of open and closed surface pore configuration, respectively. In accordance with one aspect of the present invention, grip enhancement is effected by providing mating open surface pore urethane surfaces--as by a glove cooperating with a handle wrapping or the like.
Inventors
- 👤 Charles R. Lau
- 👤 William Jensen
- 👤 Perrin A. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:55
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/08; B; B32; B32B; B32B27/00; B32B27/12; A63B60/00; A63B60/06; A63B60/08; A63B60/14; A63B60/54; B32B27/40; B32B5/00; B32B5/02; B32B5/022; A63B60/18; B32B2305/00; B32B2305/10; B32B2305/18; B32B2305/188; B32B2327/00; B32B2327/06; B32B2367/00; B32B2375/00; B32B2553/00; B32B2553/02; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/2395; Y10T428/23979; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249981; Y10T428/31504; Y10T428/31551; Y10T428/31554
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
60 words
In combination in an impact absorbing material, a laminate having a first, central layer and second and third layer adhered to opposite sides of said first layer, said first layer including a textile base disposed in polyurethane, each of said second and third layers comprising polyurethane, the surface of said second layer remote from said first layer having opened pores.
Claim 2
Dependent Claim
60 words
In combination in an impact absorbing material, a laminate having a first, central layer and second and third layer adhered to opposite sides of said first layer, said first layer including a textile base disposed in polyurethane, each of said second and third layers comprising polyurethane, the surface of said second layer remote from said first layer having opened pores.
Claim 3
Dependent Claim
20 words
A combination as in claim 1 wherein at least one of said first and second laminate layers includes polyvinyl chloride.
Claim 4
Dependent Claim
17 words
A combination as in claim 1 wherein both of said first and second layers includes polyvinyl chloride.
Claim 5
Dependent Claim
46 words
A combination as in claims 1, 2 or 3 further comprising an additional laminate having first and second adhered layers, said first layer including a textile disposed in polyurethane, said second layer comprising polyurethane having opened pores on the surface thereof remote from said first layer.
Claim 6
Dependent Claim
23 words
A combination as in claim 4 wherein at least one of said first and second layers of said additional laminate includes polyvinyl chloride.
Claim 7
Dependent Claim
14 words
A combination as in claims 1, 2 or 4 wherein said textile is woven.
Claim 8
Dependent Claim
14 words
A combination as claims 1, 2 or 4 wherein said textile comprises matted filaments.
Claim 9
Independent Claim
107 words
A method of forming an impact absorbing, grip-aiding material comprising the steps of forming a first, central layer of a composite laminate by impregnating a textile with a polyurethane in a dimethyl formamide carrier, leaching out said dimethyl formamide, drying said layer and buffing the surface of said layer, and forming second and third layers adhered to opposite side of said central layer, said second and third layers being formed by disposing polyurethane in a dimethyl formamide carrier onto said central layer, leaching out said dimethyl formamide, and drying said polyurethane, and buffing the outer surface of said second layer to create an open pore, suede-like surface.
Claim 10
Independent Claim
107 words
A method of forming an impact absorbing, grip-aiding material comprising the steps of forming a first, central layer of a composite laminate by impregnating a textile with a polyurethane in a dimethyl formamide carrier, leaching out said dimethyl formamide, drying said layer and buffing the surface of said layer, and forming second and third layers adhered to opposite side of said central layer, said second and third layers being formed by disposing polyurethane in a dimethyl formamide carrier onto said central layer, leaching out said dimethyl formamide, and drying said polyurethane, and buffing the outer surface of said second layer to create an open pore, suede-like surface.
Claim 11
Dependent Claim
16 words
A method as in claim 8, wherein said dimethyl formamide impregnating said textile includes 6-25% polyurethane.
Claim 12
Dependent Claim
19 words
A method as in claim 8 wherein said dimethyl formamide in said second and third layers includes 8-30% polyurethane.
Claim 13
Independent Claim
18 words
A method as in claims 9 or 10, wherein said dimethyl formamide impregnating said textile includes polyvinyl chloride.
Claim 14
Independent Claim
22 words
A method as in claims 9, 10 or 11 wherein said dimethyl formamide in said second and third layers includes polyvinyl chloride.
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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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |