US3554154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure with antifouling surface
Assignee: Bridgestone Firestone Inc
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Filing: 1969-02-26
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Granted: 1971-01-12
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Expires: 1989-02-26
Abstract
Abstract The invention relates to covering the surface of a boat below the water line with short outwardly projecting bristles which dampen cavitation vortices produced by motion of a boat. The bristles may include an antifouling composition.
Inventors
- 👤 William J Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:39
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/32; B63B1/34; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
35 words
A boat which has a multiplicity of bristles projecting from its outer surface below the water line, the bristles being sufficiently close together to dampen cavitation vortexes produced by movement of the boat through water.
Claim 2
Dependent Claim
26 words
The boat of claim 2 in which the bristles contain an antifouling composition which will be gradually dissolved by water in which the boat is immersed.
Claim 3
Dependent Claim
86 words
The dolphin effect which permits cavitation of the skin to accommodate currents generated by passage of an object through water is utilized by covering the immersed surface of a boat with bristles; these bristles may contain an antifouling composition of low water solubility; such antifouling compositions may be used in a covering of a body immersed in water but not intended for movement through the water, which covering has an exposed surface which is many times the area of the surface to which it is applied.
References Cited (Backward Citations)
US3154460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |