US4305172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced elastomer products
Assignee: Watson Bowman Associates Inc
•
Filing: 1979-02-08
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Granted: 1981-12-15
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Expires: 1999-02-08
Abstract
Abstract The resistance of structural elastomer products, such as bearing blocks, to compressive forces is reduced by incorporating therein a plurality of small, separate, reinforcing elements of relatively hard material. Such materials include crushed rock, concrete, glass or certain slags and small metal pieces. The reinforcing elements are congregated in an interior section or core which is covered by a marginal section substantially free from reinforcing elements.
Inventors
- 👤 Stewart C. Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:31
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/04; E01D19/041
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
76 words
In a bridge or the like the combination of a supporting member, a supported member, and an intermediate load-bearing member in contact with both said supporting member and supported member; wherein the load-bearing member comprises a body of elastomer having embedded therein a plurality of separate non-lamellar crushed reinforcing elements of relatively hard material, said elements being present in sufficient quantity as to be effective to reduce the deformation of said load-bearing member by compressive forces.
Claim 2
Dependent Claim
76 words
In a bridge or the like the combination of a supporting member, a supported member, and an intermediate load-bearing member in contact with both said supporting member and supported member; wherein the load-bearing member comprises a body of elastomer having embedded therein a plurality of separate non-lamellar crushed reinforcing elements of relatively hard material, said elements being present in sufficient quantity as to be effective to reduce the deformation of said load-bearing member by compressive forces.
Claim 3
Dependent Claim
21 words
A combination as set forth in claim 1 in which a major portion of said elements are elongated in one direction.
Claim 4
Dependent Claim
39 words
A combination as set forth in claim 1 in which said elements are congregated in a core section of said body and a marginal section of elastomer, substantially free from said elements, surrounds said core section on all sides.
Claim 5
Dependent Claim
21 words
A combination as set forth in claim 3 in which a major portion of said elements are elongated in one direction.
Claim 6
Dependent Claim
83 words
In a bridge or the like, the combination of a supporting member, a supported member, and an intermediate load-bearing member in contact with both said supporting member and supported member; wherein the load-bearing member comprises a body of elastomer having embedded therein a plurality of separate non-lamellar crushed reinforcing elements of relatively hard material, said elements being present in sufficient quantity as to be effective to reduce the deformation of said load-bearing member by compressive forces; said elements being particles of crushed rock.
Claim 7
Dependent Claim
83 words
In a bridge or the like, the combination of a supporting member, a supported member, and an intermediate load-bearing member in contact with both said supporting member and supported member; wherein the load-bearing member comprises a body of elastomer having embedded therein a plurality of separate non-lamellar crushed reinforcing elements of relatively hard material, said elements being present in sufficient quantity as to be effective to reduce the deformation of said load-bearing member by compressive forces; said elements being particles of crushed rock.
Claim 8
Dependent Claim
23 words
A combination as set forth in claim 5 in which a major portion of said crushed rock elements is elongated in one direction.
Claim 9
Dependent Claim
41 words
A combination as set forth in claim 5 in which said crushed rock elements are congregated in a core section of said body and a marginal section of elastomer, substantially free from said elements, surrounds said core section on all sides.
Claim 10
Dependent Claim
23 words
A combination as set forth in claim 7 in which a major portion of said crushed rock elements is elongated in one direction.
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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) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |