Patent US3800731A successfully refreshed from Google Patents.
US3800731A
Expired / Lapsed
US
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Ship retarding system
Assignee: J Samuel White and Co Ltd
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Filing: 1972-05-10
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Granted: 1974-04-02
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Expires: 1992-05-10
Abstract
Abstract This is a retarding system for a ship consisting of a forward facing mouth leading by way of a duct containing a pump to a discharge director for discharging the water entering the mouth in a selected approximately horizontal direction, the discharge director being preferably in a flat bottom part of the hull. The duct can be closed for when the retarding action is not needed.
Inventors
- 👤 O Slade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:34
CPC Classifications
B; B63; B63H; B63H25/00; B63H25/48
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
A ship retarding system including: means defining a forward facing mouth for receiving water; a discharge director; a duct leading from the mouth to the discharge director; and an engine driven pump in the duct for increasing the velocity of flow of the water to the discharge director, the discharge director being mounted flush with a flat portion of the bottom of the hull and being mounted for continuous adjustment about a vertical axis so that the discharge therethrough can be in a direction having a horizontal component selected from a range including the forward direction and side directions.
Claim 2
Dependent Claim
99 words
A ship retarding system including: means defining a forward facing mouth for receiving water; a discharge director; a duct leading from the mouth to the discharge director; and an engine driven pump in the duct for increasing the velocity of flow of the water to the discharge director, the discharge director being mounted flush with a flat portion of the bottom of the hull and being mounted for continuous adjustment about a vertical axis so that the discharge therethrough can be in a direction having a horizontal component selected from a range including the forward direction and side directions.
Claim 3
Dependent Claim
56 words
A system as claimed in claim 1 in which the mouth defining means comprises two ducts one at each side of the bow of the ship and means for moving each duct from a faired-in position in the sides of the bow to a projected position, thereby to enable water to freely flow into said ducts.
Claim 4
Dependent Claim
35 words
A system as claimed in claim 1 in which the mouth-defining means comprises an opening in a forward facing portion of the bow and including a valve allowing the duct to be open or closed.
Claim 5
Dependent Claim
28 words
A system as claimed in claim 1 in which the duct comprises a horizontaL passage containing the pump joined to a vertical passage leading to the discharge director.
Claim 6
Dependent Claim
49 words
A system as claimed in claim 4 in which a shaft for driving the pump and a shaft for adjusting the director cross one another, being laterally spaced from one another in the duct, and in which each shaft leads beyond the duct wall to means for turning it.
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |