Patent US2985069A successfully refreshed from Google Patents.
US3576170A
Expired / Lapsed
US
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Surge-dampening system
Assignee: Hydranautics Corp
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Filing: 1969-01-13
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Granted: 1971-04-27
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Expires: 1989-01-13
Abstract
Abstract A system is disclosed for providing surge dampening particularly adaptable for mooring and towing vessels. The surge dampener is coupled in the line or gear utilized to moor or tow a vessel. The forces created in the line by the action of the wave motion on the vessels are greatly dampened, reducing the force applied to the line and to the points to which they are secured. The system utilizes a hydraulic-gas dampener.
Inventors
- 👤 Robert M Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:43
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/20; B63B21/56; B63B2021/003; B63B2021/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
117 words
A marine towing system for towing an object behind a vessel comprising: a fluid surge dampener for dampening applied forces, pivotally coupled to said vessel; a tow line coupled between said surge dampener and said object; and, a steering bridle comprising a first and a second shock absorbing means, for absorbing shock, each movably coupled to one end of said surge dampener and each coupled to at least one line, said one line coupled between said shock absorber and a point on said vessel to the side of said surge dampener; whereby the end of said surge dampener is steered by said bridle when the tow line coupled to said surge dampener moves through a swivel angle.
Claim 2
Dependent Claim
117 words
A marine towing system for towing an object behind a vessel comprising: a fluid surge dampener for dampening applied forces, pivotally coupled to said vessel; a tow line coupled between said surge dampener and said object; and, a steering bridle comprising a first and a second shock absorbing means, for absorbing shock, each movably coupled to one end of said surge dampener and each coupled to at least one line, said one line coupled between said shock absorber and a point on said vessel to the side of said surge dampener; whereby the end of said surge dampener is steered by said bridle when the tow line coupled to said surge dampener moves through a swivel angle.
Claim 3
Dependent Claim
88 words
The system defined in claim 1 wherein said surge dampenEr comprises: a hydraulic cylinder having a piston and a piston rod coupled to said piston, said piston and piston rod disposed within said cylinder, said cylinder coupled to said vessel and said piston rod coupled to said line; and an accumulator for accumulating hydraulic fluid from said hydraulic cylinder, coupled to said hydraulic cylinder; whereby when said line moves in one direction said piston moves in said cylinder and fluid is forced from said cylinder into said accumulator.
Claim 4
Dependent Claim
83 words
The system defined in claim 2 containing a safety bridle comprising: a first safety line, coupled to said piston rod in the proximity of said tow line and coupled to a point on one side of said vessel; and a second line, coupled to said piston rod in the proximity of said tow line and coupled to a point on a second side of said vessel; whereby at least one of said safety lines becomes taut before said piston rod is fully extended.
Claim 5
Dependent Claim
50 words
The system defined in claim 3 wherein said surge dampener is pivotally coupled to a trunnion means for movement in a horizontal plane, said trunnion means being swivelly coupled to said vessel, said pivotal coupling and trunnion means enabling said surge dampener to move in a horizontal and vertical plane.
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |