US3559606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submersible barge roll control system
Assignee: Boschung Mecatronic AG
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Filing: 1969-04-09
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Granted: 1971-02-02
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Expires: 1989-04-09
Abstract
Abstract A dry dock comprising a submersible barge located between a pier and piling, sheaves carried by the sides of the barge, and chains trained over the sheaves and extending across the barge in crisscross fashion whereby the barge is maintained in a stable condition regardless of the location of the centers of gravity of the barge and a ship or boat carried by the barge with respect to the center of buoyancy of the barge.
Inventors
- 👤 Charles E Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:39
CPC Classifications
B; B63; B63C; B63C3/00; B63C3/06; B63B; B63B71/00; E; E02; E02C; E02C5/00; E02C5/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
230 words
A submersible barge roll-control control system comprising a barge adapted to be mounted adjacent a pier, said barge having an internal chamber from which water can be evacuated to produce a buoyant condition, said barge when submerged in a waterway being positioned under a ship to be repaired, a pair of sheaves mounted on one side of said barge adjacent the pier, a second pair of sheaves mounted on the opposite side of said barge, a first chain anchored at one end thereof adjacent said pier and trained over one of said first pair of sheaves and one of said second pair Of sheaves, the other end of said first chain being anchored at a location spaced from the pier, a stationary structure extending vertically from the water adjacent the other side of said barge, and a second chain connected to said stationary structure and extending over the second of said second pair of sheaves and the other sheave of said first pair of sheaves, the other end of said second chain being c anchored adjacent said pier, said chains crossing each other at a location intermediate the sides of the barge, said sheaves and chains maintaining lateral stability of the barge thereby eliminating roll as the barge is raised, the center of buoyancy of the barge falling below the effective center of gravity of the barge and its load.
Claim 2
Dependent Claim
230 words
A submersible barge roll-control control system comprising a barge adapted to be mounted adjacent a pier, said barge having an internal chamber from which water can be evacuated to produce a buoyant condition, said barge when submerged in a waterway being positioned under a ship to be repaired, a pair of sheaves mounted on one side of said barge adjacent the pier, a second pair of sheaves mounted on the opposite side of said barge, a first chain anchored at one end thereof adjacent said pier and trained over one of said first pair of sheaves and one of said second pair Of sheaves, the other end of said first chain being anchored at a location spaced from the pier, a stationary structure extending vertically from the water adjacent the other side of said barge, and a second chain connected to said stationary structure and extending over the second of said second pair of sheaves and the other sheave of said first pair of sheaves, the other end of said second chain being c anchored adjacent said pier, said chains crossing each other at a location intermediate the sides of the barge, said sheaves and chains maintaining lateral stability of the barge thereby eliminating roll as the barge is raised, the center of buoyancy of the barge falling below the effective center of gravity of the barge and its load.
Claim 3
Dependent Claim
64 words
The combination as set forth in claim 1, wherein said stationary structure is in the form of piling driven into the bottom of the waterway adjacent the said opposite side of said barge, said second chain being anchored to said piling and the first chain being anchored to said pier, the other ends of said chains being anchored to the bottom of the waterway.
Claim 4
Dependent Claim
86 words
The combination as set forth in claim 1, wherein said stationary structure includes multiple pilings arranged along the said opposite side of the barge at longitudinally spaced locations, multiple pairs of sheaves mounted on said barge at said opposite side, a multiple pairs of sheaves mounted on said barge at said one side, each of said spaced pairs of sheaves having trained thereover roll-control chains anchored at each end thereof, said roll-control chains crossing over each other at a location intermediate the sides of said barge.
Claim 5
Dependent Claim
86 words
The combination as set forth in claim 2, wherein said stationary structure includes multiple pilings arranged along the said opposite side of the barge at longitudinally spaced locations, multiple pairs of sheaves mounted on said barge at said opposite side, a multiple pairs of sheaves mounted on said barge at said one side, each of said spaced pairs of sheaves having trained thereover roll-control chains anchored at each end thereof, said roll-control chains crossing over each other at a location intermediate the sides of said barge,
Claim 6
Dependent Claim
55 words
The combination as set forth in claim 3, wherein said roll-control chains cross each other at a location intermediate the sides of the barge and extend in independent directions whereby both lateral stability and longitudinal stability are maintained to avoid roll with respect to either a longitudinal axis or a transverse axis for said barge.
Claim 7
Dependent Claim
55 words
The combination as set forth in claim 4, wherein said roll-control chains cross each other at a location intermediate the sides of the barge and extend in independent directions whereby both lateral stability and longitudinal stability are maintained to avoid roll with respect to either a longitudinal axis or a transverse axis for said barge.
References Cited (Backward Citations)
US710170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |