Patent US3758220A successfully refreshed from Google Patents.
US3758220A
Expired / Lapsed
US
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Elastomeric expansion joint
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1972-01-27
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Granted: 1973-09-11
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Expires: 1992-01-27
Abstract
Abstract A reinforced elastomeric expansion joint is constructed so as to flex or bend by utilizing, as an internal rigid reinforcement, a series of spaced narrow plates joined by flexible means such as wire cable. The narrow plates combine to effect sufficient support, but the presence thereof within the joint does not preclude the joint from being bent when required, such as for connecting the intersection of a curb and gutter on a bridge or roadway.
Inventors
- 👤 R Hein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:43
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/06; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/12; E01C11/126
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
An elastomeric expansion joint section in the curb and gutter area of an expansion gap between adjacent sections of a roadway, said joint section comprising a body of elastomeric material having a substantially planar top surface, a first portion of said body disposed in a substantially horizontal plane, and a second portion of said body bent such that said second portion is disposed in a plane intersecting said plane of disposition of said first portion, at least one reinforcing member completely embedded within said body and extending substantially the entire length thereof, said reinforcing member comprising a plurality of longitudinally spaced metal plates disposed in a plane substantially parallel to said top surface of said body, said plates being joined together by a pair of laterally spaced, substantially mutually parallel, longitudinally extending flexible metallic cable members.
Claim 2
Dependent Claim
136 words
An elastomeric expansion joint section in the curb and gutter area of an expansion gap between adjacent sections of a roadway, said joint section comprising a body of elastomeric material having a substantially planar top surface, a first portion of said body disposed in a substantially horizontal plane, and a second portion of said body bent such that said second portion is disposed in a plane intersecting said plane of disposition of said first portion, at least one reinforcing member completely embedded within said body and extending substantially the entire length thereof, said reinforcing member comprising a plurality of longitudinally spaced metal plates disposed in a plane substantially parallel to said top surface of said body, said plates being joined together by a pair of laterally spaced, substantially mutually parallel, longitudinally extending flexible metallic cable members.
Claim 3
Dependent Claim
17 words
The invention as defined in claim 1 wherein the longitudinal spacings between said plates are substantially equal.
Claim 4
Dependent Claim
20 words
The invention as defined in claim 1 wherein all of said plates are substantially equal in length, width, and thickness.
References Cited (Backward Citations)
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |