US3916467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast water buoy
Assignee: Individual
•
Filing: 1974-11-07
•
Granted: 1975-11-04
•
Expires: 1994-11-07
Abstract
Abstract A low cost lightweight unsinkable plastic buoy is adapted to float high and upright in a fast current of water. The high riding nature of the buoy and its configuration render it resistant to damage from floating debris and collisions with barges and boats. Mooring and lifting elements are firmly anchored to the buoy, and it is adapted to support on the top of its flotation body desired forms of markers.
Inventors
- 👤 Jr Robert F Curd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:27
CPC Classifications
B; B63; B63B; B63B22/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
161 words
A buoy particularly for use in fast currents of water comprising a roughly hemispherical flotation body portion having a closed plastic shell and an internal core of flotation material, a ballast element inside of the shell at the bottom of said body portion, a buoy mooring element at the bottom of the body portion and centrally disposed and engaged with the ballast element and serving to anchor the same within said shell, an intermediate spherically curved plastic liner intervened between said shell and ballast element in the lower portion of the shell, said closed plastic shell comprising upper and lower telescoping sections which are integrally joined by a solvent weld, said lower shell section being hemispherical and the upper shell section comprising a short substantially cylindrical section having a flat top wall joined with the cylindrical side wall of the top section by an annular rounded shoulder, and an upstanding visual marker secured to the top of the body portion centrally.
Claim 2
Dependent Claim
161 words
A buoy particularly for use in fast currents of water comprising a roughly hemispherical flotation body portion having a closed plastic shell and an internal core of flotation material, a ballast element inside of the shell at the bottom of said body portion, a buoy mooring element at the bottom of the body portion and centrally disposed and engaged with the ballast element and serving to anchor the same within said shell, an intermediate spherically curved plastic liner intervened between said shell and ballast element in the lower portion of the shell, said closed plastic shell comprising upper and lower telescoping sections which are integrally joined by a solvent weld, said lower shell section being hemispherical and the upper shell section comprising a short substantially cylindrical section having a flat top wall joined with the cylindrical side wall of the top section by an annular rounded shoulder, and an upstanding visual marker secured to the top of the body portion centrally.
Claim 3
Dependent Claim
25 words
The structure of claim 1, and said upstanding marker being formed of plastic and including a plastic shell and a core portion of foam plastic.
Claim 4
Dependent Claim
19 words
The structure of claim 2, and said shell of the marker having a metal lining constituting a radar reflector.
References Cited (Backward Citations)
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Cited
US3132417A
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US3340553A
Cited
US3360811A
Cited
US3474474A
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US3423777A
Cited
US3453670A
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US3674225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |