US3610195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defouling of ship{40 s hulls
Assignee: Individual
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Filing: 1969-02-28
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Granted: 1971-10-05
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Expires: 1989-02-28
Abstract
Abstract This invention relates to a method of, and apparatus for defouling the hull of a ship while afloat by lowering into the water a pad having a liquid, permeable dispensing face, moving the pad to bring the dispensing face into intimate contact with the hull, and feeding to the pad steam or a poisonous liquid composition which passes through the dispensing face to attack the adjacent marine growth.
Inventors
- 👤 Peter Desmond Ropner T Willcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:05
CPC Classifications
B; B63; B63B; B63B59/00; B63B59/06; B63B59/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
A method of removing marine growth from a ship''s hull while afloat which comprises lowering into the water from the ship a flexible porous pad having a liquid permeable dispensing face and a liquidtight parallel other face, evacuating water from the pad to draw its dispensing face into intimate contact with the hull, and feeding to the interior of the pad steam or a poisonous liquid composition, which passes through the dispensing face to attack the adjacent marine growth.
Claim 2
Independent Claim
79 words
A method of removing marine growth from a ship''s hull while afloat which comprises lowering into the water from the ship a flexible porous pad having a liquid permeable dispensing face and a liquidtight parallel other face, evacuating water from the pad to draw its dispensing face into intimate contact with the hull, and feeding to the interior of the pad steam or a poisonous liquid composition, which passes through the dispensing face to attack the adjacent marine growth.
Claim 3
Dependent Claim
39 words
A method as set forth in claim 1 wherein the pad, while said dispensing face is in said intimate contact, is moved along the hull to cause dislodgement of marine growth by scraping means associated with the dispensing face.
Claim 4
Dependent Claim
84 words
Apparatus for removing marine growth from a ship''s hull while afloat comprising a flexible dispensing pad which is sealingly engageable with the ship''s hull and has a fluid permeable dispensing face and a liquidtight other face, means on the ship for raising and lowering the dispensing pad, means for admitting steam or a poisonous liquid composition into the pad, means for discharging liquid from the pad, means for causing said admission and discharge and wherein the pad has abrasive means on its dispensing face.
Claim 5
Dependent Claim
84 words
Apparatus for removing marine growth from a ship''s hull while afloat comprising a flexible dispensing pad which is sealingly engageable with the ship''s hull and has a fluid permeable dispensing face and a liquidtight other face, means on the ship for raising and lowering the dispensing pad, means for admitting steam or a poisonous liquid composition into the pad, means for discharging liquid from the pad, means for causing said admission and discharge and wherein the pad has abrasive means on its dispensing face.
Claim 6
Dependent Claim
17 words
Apparatus as set forth in claim 3 wherein said abrasive means is a wire mesh abrasive sheet.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |