Patent US4297759A successfully refreshed from Google Patents.
US4297759A
Expired / Lapsed
US
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Floating bridge
Assignee: Dr Ing HCF Porsche AG
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Filing: 1979-11-26
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Granted: 1981-11-03
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Expires: 1999-11-26
Abstract
Abstract A transportable floating bridge includes a bridge unit, a buoyant pontoon for supporting the bridge unit, a device carried by the pontoon for lifting and pivoting the bridge unit, a coupler for swingingly linking the bridge unit to a like pontoon supported bridge unit, and a coupling for rigidly coupling the bridge units together, whereby the floating bridge is easily formed from a plurality of bridge units regardless of whether the bridge units are located end-to-end or side-by-side after off-loading from their transport vehicle.
Inventors
- 👤 Friedhelm Soffge
- 👤 Hans Weigele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:06
CPC Classifications
E; E01; E01D; E01D15/00; E01D15/14; E01D15/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
A transportable floating bridge comprising a bridge unit, a buoyant pontoon means supporting said bridge unit, displacement means carried by said pontoon means for lifting and pivoting said bridge unit, rotatable fixing means carried by the bridge unit for swingably linking said bridge unit to a like pontoon means supported bridge unit in a manner enabling relative rotation therebetween in a horizontal plane, and coupling means carried by the bridge unit for rigidly coupling said bridge unit to said like pontoon means supported bridge unit.
Claim 2
Dependent Claim
85 words
A transportable floating bridge comprising a bridge unit, a buoyant pontoon means supporting said bridge unit, displacement means carried by said pontoon means for lifting and pivoting said bridge unit, rotatable fixing means carried by the bridge unit for swingably linking said bridge unit to a like pontoon means supported bridge unit in a manner enabling relative rotation therebetween in a horizontal plane, and coupling means carried by the bridge unit for rigidly coupling said bridge unit to said like pontoon means supported bridge unit.
Claim 3
Dependent Claim
24 words
A transportable floating bridge according to claim 1, wherein said rotatable fixing means is disposed at at least one corner of said bridge unit.
Claim 4
Dependent Claim
47 words
A transportable floating bridge as in claim 1 or 2, wherein said displacement means comprises an outer housing braced on said pontoon means and a pivot mount carried within said housing in a rotatable and height adjustable manner, said pivot mount being coupled to said bridge unit.
Claim 5
Dependent Claim
32 words
A floating bridge as in claim 3, characterized in that the pivot mount comprises a centrally disposed lift cylinder braced on the pontoon means, which cylinder is connected with a pivot drive.
Claim 6
Dependent Claim
38 words
A floating bridge as in claim 4, characterized in that the pivot drive comprises adjustment cylinders that engage a bracket associated with one of the pivot mount and the lift cylinder, said cylinders being braced on the housing.
Claim 7
Dependent Claim
80 words
A floating bridge as in claim 1 or 2, characterized in that the fixing means comprises a rotatably borne funnel-shaped receiving part and a rotatably borne complementarily shaped counter piece, said receiving part and counterpiece being respectively disposed at opposing corners of tracks of the bridge unit for enabling one of the receiving part and counter piece of the bridge unit to be engageable together with the other of said receiving part and counter piece of the like bridge unit.
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) | 1984-11-02 | 1985-05-04 | 1985-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-02 | 1989-05-04 | 1989-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-02 | 1993-05-04 | 1993-11-03 | $7700.00 | Window Closed / Lapsed |