US3946694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic emergency bilge water pumpout system
Assignee: Individual
•
Filing: 1974-06-24
•
Granted: 1976-03-30
•
Expires: 1994-06-24
Abstract
Abstract An automatic emergency bilge water pumpout system. The system comprises a through-hull water intake pipe for a boat engine's cooling water pump and a valve for closing the intake of water through the through-hull intake pipe. Another emergency pipe for aspirating water from the interior of a boat bilge communicates with a part in the valve. Float for automatically closing off the flow of water through the through-hull intake pipe and simultaneously opening the valve's part to the other emergency pipe, for pumping out the boat's bilge when water reaches a dangerous level are provided.
Inventors
- 👤 Robert Belsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:02
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/1037; B; B63; B63B; B63B13/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
124 words
In a boat hull, an emergency pumping system comprising, in combination with the boat engine's water pump, a through-hull water intake pipe having an open end submerged in water below the boat's hull and another end connected with said water pump, valve means disposed intermediate said through-hull pipe's ends, said valve means having a first inlet port for said through-hull intake pipe, an outlet port communicating with said pump, a second inlet port, an emergency water intake pipe having a free end positioned inwardly of said hull and another end connected with said second port, a float for operating said valve for closing said first port, while opening said second port, said float being operable when water reaches a dangerous level in the boat.
Claim 2
Dependent Claim
124 words
In a boat hull, an emergency pumping system comprising, in combination with the boat engine's water pump, a through-hull water intake pipe having an open end submerged in water below the boat's hull and another end connected with said water pump, valve means disposed intermediate said through-hull pipe's ends, said valve means having a first inlet port for said through-hull intake pipe, an outlet port communicating with said pump, a second inlet port, an emergency water intake pipe having a free end positioned inwardly of said hull and another end connected with said second port, a float for operating said valve for closing said first port, while opening said second port, said float being operable when water reaches a dangerous level in the boat.
Claim 3
Dependent Claim
68 words
The combination as claimed in claim 1, wherein said valve means comprises a cylindrical housing, a piston displaceable in said housing for opening and closing said ports, a piston rod secured to said piston with its upper end to said piston, said float having a sleeve slidably adjustable on the piston rod's lower end, a clamp having a set screw for securing said sleeve on said piston rod.
Claim 4
Dependent Claim
48 words
The combination as claimed in claim 2, further comprising a solenoid mounted below said housing, said piston rod being displaceable in said solenoid, switch means for energizing said solenoid, operable by said float, said switch means being in a series circuit with a power source and the solenoid.
Claim 5
Dependent Claim
80 words
The combination as claimed in claim 3, wherein said switch means comprises an insulated member attached below said solenoid, a copper contact plate secured to said insulated member, said copper contact plate being electrically connected to one terminal of said power source, a contact arm pivoted to said clamp, said contact arm being adapted to engage with said copper contact plate upon upward movement of said float and said clamp being electrically connected to another terminal of said power source.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |