Patent US3838931A successfully refreshed from Google Patents.
US3838931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic road bridge joint
Assignee: Individual
•
Filing: 1973-05-23
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Granted: 1974-10-01
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Expires: 1993-05-23
Abstract
Abstract An elastic road bridge joint comprising an arcuate member having an arcuate peripheral surface supporting the load of the road pavement and transmitting this load to a pair of adjacent bridge floors to be connected by the joint, said arcuate peripheral surface being supported at a point below its vertex by a section member firmly connected thereto and, if desired, forming a single element therewith, which section member contributes to take off the load from said arcuate peripheral surface, the arcuate means being provided with a resilient watertight coating connecting it to the adjacent bridge floors and being to a limited extent deformable to adapt itself to the deformations of the road pavement and the bridge floors under the influence of ambient temperature fluctuations.
Inventors
- 👤 A Valla
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; E01D19/067; E01D19/08; E01D19/086
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
116 words
An elastic road bridge joint comprising arcuate means having an arcuate peripheral surface supporting the load of the road pavement and arranged to transmit the load to a pair of adjacent bridge floors to be connected by the joint, said arcuate peripheral surface being supported at a point below its vertex by a section member firmly connected thereto and contributing to take off the load from said arcuate peripheral surface, said arcuate means being provided with a resilient watertight coating connecting it to said adjacent bridge floors and being to a limited extent deformable to adapt itself to the deformations of the road pavement and said adjacent bridge floors under the influence of ambient temperature fluctuations.
Claim 2
Dependent Claim
116 words
An elastic road bridge joint comprising arcuate means having an arcuate peripheral surface supporting the load of the road pavement and arranged to transmit the load to a pair of adjacent bridge floors to be connected by the joint, said arcuate peripheral surface being supported at a point below its vertex by a section member firmly connected thereto and contributing to take off the load from said arcuate peripheral surface, said arcuate means being provided with a resilient watertight coating connecting it to said adjacent bridge floors and being to a limited extent deformable to adapt itself to the deformations of the road pavement and said adjacent bridge floors under the influence of ambient temperature fluctuations.
Claim 3
Dependent Claim
69 words
An elastic road bridge joint as claimed in claim 1, wherein said arcuate means is supported below its vertex by an angle section member firmly connected with its vertex to said arcuate means below the vertex thereof and having a pair of horizontally extending flanges supported by the ends of said adjacent bridge floors and said arcuate means having ends terminating just before and above said horizontally extending flanges.
Claim 4
Dependent Claim
40 words
An elastic road bridge joint as claimed in claim 1, wherein a cover plate is arranged between the adjacent ends of said bridge floors symmetrically opposite the vertex of said section member and Forms a downwardly concave water drain channel.
Claim 5
Dependent Claim
67 words
An elastic road bridge joint as claimed in claim 1, wherein said resilient watertight coating consists of a bituminous conglomerate also used as conventionally to cover the bridge floors and the vertex of the joint is at a level considerably below the upper surface of said resilient water-tight coating and a connection net is placed horizontally above the joint and is embedded in said resilient watertight coating.
Claim 6
Dependent Claim
68 words
An elastic road bridge joint as claimed in claim 1, wherein said resilient watertight coating consists of approximately equal quantities of two different types of bitumen and calcium carbonate and about 15-20 percent by weight, on the basis of the total amount of bitumen used, of neoprene latex, one of said types of bitumen having a penetration index of 40-50 and the other a penetration index of 60-80.
Claim 7
Dependent Claim
25 words
An elastic road bridge joint as claimed in claim 1, wherein said section member is formed integrally with said means having said arcuate peripheral surface.
Claim 8
Dependent Claim
47 words
An elastic road bridge joint as claimed in claim 1, wherein said section member is made of a plurality of individual plates placed one upon the other and consisting of a material selected from the group comprising plastics material and metal alloys formed into the required shape.
Claim 9
Dependent Claim
45 words
An elastic road bridge joint as claimed in claim 1, wherein said arcuate means is formed integrally with said section member and the section member has a pair of inclined sides connected with a relatively wide angle to said arcuate means below the vertex thereof.
Claim 10
Dependent Claim
29 words
An elastic road bridge joint as claimed in claim 1, wherein said arcuate means is formed of a plurality of layers of resilient material placed one above the other.
Claim 11
Dependent Claim
45 words
An elastic road bridge joint as claimed in claim 1, wherein said section member is made of a plurality of individual plates placed one upon the other with alternate plates consisting of relatively hard material such as spring steel and resilient material such as rubber.
Claim 12
Dependent Claim
40 words
An elastic road bridge joint as claimed in claim 2, wherein said angle section member has a pair of inclined sides adjacent its vertex and the inclined sides are connected with a relatively wide angle to said horizontally extending flanges.
Claim 13
Dependent Claim
36 words
An elastic road bridge joint as claimed in claim 2, wherein said angle section member has a pair of inclined sides adjacent its vertex and a horizontal cross beam connects said inclined sides to each other.
Claim 14
Dependent Claim
24 words
An elastic bridge joint as claimed in claim 2, wherein said horizontally extending flanges extend laterally from the basis of said angle section member.
Claim 15
Dependent Claim
23 words
An elastic bridge joint as claimed in claim 2, wherein said horizontally extending flanges extend across the basis of said angle section member.
Claim 16
Dependent Claim
58 words
An elastic road bridge joint as claimed in claim 1, wherein said arcuate means and said section member are made of a single piece of resiliet material provided with a plurality of through holes arranged in an arc of a circle and delimiting the arcuate means and the section member with the holes forming the boundary line therebetween.
Claim 17
Dependent Claim
71 words
An elastic road bridge joint as claimed in claim 15, further comprising a pair of support flanges extending laterally substantially horizontally from the basis of a central body formed by said section member and said central body is provided in its lower central portion with a water discharge channel extending longitudinally through the joint and connected by smaller transverse channels to the basis of said central body adjacent said support flanges.
Claim 18
Dependent Claim
33 words
An elastic road bridge joint as claimed in claim 15, wherein said section member forms a central body of the joint and a hole extends longitudinally through the central body to accommodate cables.
Claim 19
Dependent Claim
49 words
An elastic road bridge joint as claimed in claim 15, wherein said section member forms a central body of the joint and a pair of relatively short side flanges extend from the central Body for positioning and centering the section member when it is used for connecting vertical panels.
Claim 20
Dependent Claim
44 words
An elastic road bridge joint as claimed in claim 15, wherein a water collecting channel is provided upstream of the joint and extends parallel thereto and is connected by transverse channels to a central collecting channel formed below and extending longitudinally of the joint.
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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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |