Patent US3830583A successfully refreshed from Google Patents.
US3830583A
Expired / Lapsed
US
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Composite expansion joint assembly
Assignee: Acme Highway Products Corp
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Filing: 1973-03-09
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Granted: 1974-08-20
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Expires: 1993-03-09
Abstract
Abstract A composite expansion joint assembly of alternating elastic sealing elements and rigid structural members slidably mounted on transversely extending support bars by tie-down assemblies restricting vertical and rotational displacement of the structural members. Retainer assemblies limit vertical displacement of the supporting bars relative to their supports. Means, including leaf springs, equalize lateral movement of the sealing elements during compression and expansion thereof.
Inventors
- 👤 H Becht
- 👤 J Campbell
- 👤 J Kerschner
- 👤 E Krollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:30
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/06; E01D19/062
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
162 words
A composite expansion joint assembly comprising: a pair of edge members adapted to define the opposite sides of an expansion groove between bridge deck sections; said edge members having oppositely directed elongated openings extending lengthwise of said edge members; laterally spaced support bars extending transversely of said groove with the opposite ends of said bars extending through said openings beyond the opposite sides of said groove; a plurality of elongated resiliently yieldable sealing elements in a side-by-side relation extending longitudinally of said groove; elongated rigid structural members interposed between said sealing elements and extending lengthwise thereof; said structural members being supported on said support bars for lateral sliding movement relative thereto; releasable means restricting lateral movement of said support bars within said openings whereby removal of said restricting means frees the opposite ends of said support bars for lateral arcuate movement through said elongated openings to position said support bars wholly within said expansion groove for convenient removal from said expansion groove.
Claim 2
Dependent Claim
162 words
A composite expansion joint assembly comprising: a pair of edge members adapted to define the opposite sides of an expansion groove between bridge deck sections; said edge members having oppositely directed elongated openings extending lengthwise of said edge members; laterally spaced support bars extending transversely of said groove with the opposite ends of said bars extending through said openings beyond the opposite sides of said groove; a plurality of elongated resiliently yieldable sealing elements in a side-by-side relation extending longitudinally of said groove; elongated rigid structural members interposed between said sealing elements and extending lengthwise thereof; said structural members being supported on said support bars for lateral sliding movement relative thereto; releasable means restricting lateral movement of said support bars within said openings whereby removal of said restricting means frees the opposite ends of said support bars for lateral arcuate movement through said elongated openings to position said support bars wholly within said expansion groove for convenient removal from said expansion groove.
Claim 3
Dependent Claim
20 words
A composite expansion joint assembly according to claim 1 including means supporting said support bars for sliding movement relative thereto.
Claim 4
Dependent Claim
40 words
A composite expansion joint assembly according to claim 2 wherein said means supporting said support bars include paired bearing bars releasably mounted within said expansion groove adjacent said edge member openings for supporting the opposite ends of one support bar.
Claim 5
Dependent Claim
47 words
A composite expansion joint assembly according to claim 3 wherein said restricting means comprises a pair of spaced bolts threaded into each of said bearing bars on opposite sides of said support bar limiting lateral movement of said support bar and maintaining said bearing bar in place.
Claim 6
Dependent Claim
35 words
A composite expansion joint assembly according to claim 1 including casings adjacent said edge member openings extending outwardly from said edge members into said deck sections for receiving the opposite ends of said support bars.
Claim 7
Dependent Claim
29 words
A composite expansion joint assembly accorDing to claim 1 including means outwardly of said opposite sides of said groove engagable with said support bars for limiting vertical displacement thereof.
Claim 8
Dependent Claim
47 words
A composite expansion joint assembly according to claim 6 wherein each of said limiting means comprises a resiliently yieldable block having an outer layer of low friction material bearing against a support bar and means for adjusting the bearing pressure of said block against said support bar.
Claim 9
Dependent Claim
31 words
A composite expansion joint assembly according to claim 1 including means on said structural members and said support bars coacting for limiting vertical displacement of the former relative to the latter.
Claim 10
Dependent Claim
35 words
A composite expansion joint assembly according to claim 8 wherein said limiting means includes restraining means secured to a structural member and engagable with a separable bar secured to the side of a support bar.
Claim 11
Dependent Claim
35 words
A composite expansion joint assembly according to claim 9 wherein said restraining means comprises a bracket depending from said one structural member; said bracket having fastening means disposed beneath said separable bar and engagable therewith.
Claim 12
Dependent Claim
24 words
A composite expansion joint assembly according to claim 1 including means for equalizing the lateral movement of said structural members and said sealing elements.
Claim 13
Dependent Claim
33 words
A composite expansion joint assembly according to claim 11 wherein said equalizing means comprises a plurality of leaf springs; and means mounting each of said leaf springs below each of said sealing elements.
Claim 14
Dependent Claim
68 words
A composite expansion joint assembly according to claim 12 wherein said mounting means comprises plates mounted to said edge members and to the lower ends of said structural members in spaced relation to said support bars; each of said springs spanning the space between adjacent plates and rigidly secured at one end thereof to one of said adjacent plates and bearing against the other of said adjacent plates.
Claim 15
Dependent Claim
30 words
A composite expansion joint assembly according to claim 1 wherein said each of said support bars is provided with a lining facilitating sliding movement of said rigid structural members thereon.
Claim 16
Dependent Claim
38 words
A composite expansion joint assembly according to claim 14 wherein said rigid structural members are provided with shoes having a layer of low friction material thereon engagable with said support bar lining further facilitating relative sliding movement therebetween.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |