US3707011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bracing apparatus for movement of a bridging work
Assignee: IND DE TRAVAUX Cie
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Filing: 1971-03-01
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Granted: 1972-12-26
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Expires: 1991-03-01
Abstract
Abstract The unsupported end of a bridging structure being moved from a support to the next support is braced by cables extending from the unsupported end over a mast to the inshore end of the structure. Hydraulic means at the foot of the mast raise and lower the mast to provide compensating forces on the cables as the structure is moved.
Inventors
- 👤 Pierre Launay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:51
CPC Classifications
E; E01; E01D; E01D21/00; E01D21/06; E01D21/065
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
Bracing apparatus for a bridging structure moved progressively from a bank toward a support comprising a plurality of cables anchored adjacent the outer end of the bridging structure and anchored at a second point inboard of the first anchorage, a substantially vertical mast equidistant between the two anchoring points of said cables supporting said cables, means for raising said mast disposed between the foot of said mast and the bridging structure, means for continuously controlling said raising device and a dynamometer disposed between said control means and said bridging structure, said continuous control means being programmed according to the variation of the forces measured by said dynamometer.
Claim 2
Dependent Claim
107 words
Bracing apparatus for a bridging structure moved progressively from a bank toward a support comprising a plurality of cables anchored adjacent the outer end of the bridging structure and anchored at a second point inboard of the first anchorage, a substantially vertical mast equidistant between the two anchoring points of said cables supporting said cables, means for raising said mast disposed between the foot of said mast and the bridging structure, means for continuously controlling said raising device and a dynamometer disposed between said control means and said bridging structure, said continuous control means being programmed according to the variation of the forces measured by said dynamometer.
Claim 3
Dependent Claim
28 words
Bracing apparatus as described in claim 1, said raising means including at least one hydraulic jack supplied with fluid under pressure and controlled by said continuous control means.
Claim 4
Dependent Claim
163 words
Bracing apparatus for a bridging structure moved progressively from a bank toward a support comprising a plurality of cables anchored adjacent the outer end of the bridging structure and anchored at a second point inboard of the first anchorage, a substantially vertical mast equidistant between the two anchoring points of said cables supporting said cables, means for raising said mast disposed between the foot of said mast and the bridging structure, means for continuously controlling said raising device and a dynamometer disposed between said control means and said bridging structure, said continuous control means being programmed according to the variation of the forces measured by said dynamometer, said raising means including at least one hydraulic jack supplied with fluid under pressure and controlled by said continuous control means, said continuous control means for the pressure supplied to said hydraulic jacks being programmed according to the variation of the forces measured by said dynamometer as a function of the movement of said bridging structure.
Claim 5
Dependent Claim
163 words
Bracing apparatus for a bridging structure moved progressively from a bank toward a support comprising a plurality of cables anchored adjacent the outer end of the bridging structure and anchored at a second point inboard of the first anchorage, a substantially vertical mast equidistant between the two anchoring points of said cables supporting said cables, means for raising said mast disposed between the foot of said mast and the bridging structure, means for continuously controlling said raising device and a dynamometer disposed between said control means and said bridging structure, said continuous control means being programmed according to the variation of the forces measured by said dynamometer, said raising means including at least one hydraulic jack supplied with fluid under pressure and controlled by said continuous control means, said continuous control means for the pressure supplied to said hydraulic jacks being programmed according to the variation of the forces measured by said dynamometer as a function of the movement of said bridging structure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |