US3595142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion rubber joint for roads and bridges
Assignee: Societa Applicazioni Gomma Antivibranti SAGA SpA
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Filing: 1969-10-02
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Granted: 1971-07-27
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Expires: 1989-10-02
Abstract
Abstract An expansion joint for road or bridge sections comprises a resilient strip straddling the gap between two adjacent sections, and beads along the edges of the strip running along the gap. The beads are received in the cavity of a channel, and are wedged in the channel by a resilient wedge member which prestresses the joint to prevent puckering of the edges of the strip when it is under traction.
Inventors
- 👤 Carlo Via
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:30
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/06; E01C; E01C11/00; E01C11/02; E01C11/04; E01C11/12; E01C11/126
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
90 words
An expansion joint between two adjacent road sections that are separated by a gap, the joint comprising a resilient strip straddling the gap, a bead of generally dovetail cross section projecting from the lower face of the strip on each side of the gap and extending along the edge of the strip, a rigid channel element secured to each road section and receiving the bead in its cavity, and a resilient wedge member rEceived in each channel element alongside the bead and wedging the bead therein in a prestressed condition.
Claim 2
Dependent Claim
90 words
An expansion joint between two adjacent road sections that are separated by a gap, the joint comprising a resilient strip straddling the gap, a bead of generally dovetail cross section projecting from the lower face of the strip on each side of the gap and extending along the edge of the strip, a rigid channel element secured to each road section and receiving the bead in its cavity, and a resilient wedge member rEceived in each channel element alongside the bead and wedging the bead therein in a prestressed condition.
Claim 3
Dependent Claim
87 words
The expansion joint of claim 1 in which each bead has an oblique inner wall and a generally vertical outer wall, and each channel element has an oblique inner wall abutting the oblique inner wall of the bead received in the channel cavity and an outer wall with an inturned edge, the wedge member having a generally vertical inner face abutting the outer wall of the bead and having on its outer face a shoulder receiving the inturned edge of the outer wall of the channel element.
Claim 4
Dependent Claim
36 words
The expansion joint of claim 2 in which the outer wall of the channel element is substantially vertical and the wedge member has a substantially vertical outer face abutting the outer wall of the channel element.
Claim 5
Dependent Claim
16 words
The expansion joint of claim 2 in which the wedge member has a pointed lower end.
Claim 6
Dependent Claim
33 words
The expansion joint of claim 2 in which the edges of the strip above the bead are formed with a notch, the wedge member having a matching projection which extends into the notch.
Claim 7
Dependent Claim
36 words
The expansion joint of claim 1 in which the wedge member has on its outer face a projection with sloping sides, he channel element having an outer wall with a notch formed to receive the projection.
Claim 8
Dependent Claim
28 words
The expansion joint of claim 1 in which the strip is divided into a plurality of abutting strip elements provided with matching interengaging formations at their abutting edges.
Claim 9
Dependent Claim
39 words
The expansion joint of claim 7 in which the interengaging formations comprise a first matching projection and groove holding the elements against relative horizontal movement and a second matching projection and groove holding the elements against relative vertical movement.
Claim 10
Dependent Claim
35 words
The expansion joint of claim 1 in which the top surface of the wedge member projects above the channel element to lie substantially at the same level as the top face of the resilient strip.
References Cited (Backward Citations)
US2220628A
Cited
US2198084A
Cited
US2240786A
Cited
US3018703A
Cited
US3276335A
Cited
US3324774A
Cited
US3316574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |