Patent US3786869A successfully refreshed from Google Patents.
US3786869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle pressure control system
Assignee: JNT Link LLC
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Filing: 1972-04-27
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Granted: 1974-01-22
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Expires: 1992-04-27
Abstract
Abstract Hose nozzle pressure control means for a fire engine pumper of the type having a pump driven by a truck engine comprising, engine governor means connected to and responsive to the pump output pressure and engine throttle means to regulate engine speed to maintain pump output pressure, a motorized valve connected between said pump and said hose, and means to control said valve from said nozzle location. The valve control means comprises a transmitter located at said nozzle, a receiver and control means connected to said receiver and responsive to said transmitter to control said valve. The transmitter is connected to said receiver means by wire or by radio.
Inventors
- 👤 Loughlin J Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:22
CPC Classifications
A; A62; A62C; A62C25/00; A62C25/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
Hose nozzle pressure control means for a fire engine pumper of the type having a pump driven by a truck engine, comprising, engine governor means connected to and responsive to the pump output pressure and engine throttle means to regulate engine speed to maintain pump output pressure, comprising an electric motor connected to the engine throttle,, electric amplifier means connected to the input of said motor, first input potentiometer means connected to said amplifier simulating a selected pump pressure and second input transducer means connected to said amplifier transmitting actual pump pressure.
Claim 2
Dependent Claim
92 words
Hose nozzle pressure control means for a fire engine pumper of the type having a pump driven by a truck engine, comprising, engine governor means connected to and responsive to the pump output pressure and engine throttle means to regulate engine speed to maintain pump output pressure, comprising an electric motor connected to the engine throttle,, electric amplifier means connected to the input of said motor, first input potentiometer means connected to said amplifier simulating a selected pump pressure and second input transducer means connected to said amplifier transmitting actual pump pressure.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |