US3695783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for regulating power for pumps
Assignee: Individual
•
Filing: 1970-11-03
•
Granted: 1972-10-03
•
Expires: 1990-11-03
Abstract
Abstract Means for additive power regulation for at least two pumps comprising a control conduit which is connected to the main pump conduits and is provided with throttle means so adjusted to the volume-flows of the pumps that a pressure set up in the control conduit will be proportional to the sum of the effects of the pumps, said pressure actuating regulating means for connecting the main flow from one of the pumps to the main flow to the other pump.
Inventors
- 👤 Ingebret Soyland
- 👤 Kristian Soyland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:33
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
122 words
A hydraulic system for earth moving equipment for controlling at least two movable components thereof, including a separate circuit for each movable component, each circuit comprising a pump, a suction conduit between a source of hydraulic medium and the pump inlet, a pressure conduit between the pump outlet and the movable component, a return conduit between the movable component and the source, motor means for driving the pump, a regulating means for the pumps, said regulating means including a cross conduit providing communication between the pressure conduits downstream of the pump outlets, thRottles for the cross conduit, a regulating component, and a control conduit providing communication between the cross conduit intermediate the throttles and the regulating component for operating the regulating component.
Claim 2
Dependent Claim
122 words
A hydraulic system for earth moving equipment for controlling at least two movable components thereof, including a separate circuit for each movable component, each circuit comprising a pump, a suction conduit between a source of hydraulic medium and the pump inlet, a pressure conduit between the pump outlet and the movable component, a return conduit between the movable component and the source, motor means for driving the pump, a regulating means for the pumps, said regulating means including a cross conduit providing communication between the pressure conduits downstream of the pump outlets, thRottles for the cross conduit, a regulating component, and a control conduit providing communication between the cross conduit intermediate the throttles and the regulating component for operating the regulating component.
Claim 3
Dependent Claim
87 words
The hydraulic system as claimed in claim 1 in which each pump is a constant volume-flow pump and the regulating member is a hydraulically operated valve controlling conduits leading from the valve to the pressure conduit of one pump down-stream of the pump outlet and a second conduit leading from the valve to the suction conduit of the other pump upstream of the pump inlet and a one-way valve in the suction conduit of the other pump to prevent the hydraulic medium flowing back to the source.
Claim 4
Dependent Claim
60 words
The hydraulic system as claimed in claim 1 in which said pumps are variable volume-flow pumps and the regulating component includes a single acting cylinder piston unit, spring means holding the piston in a neutral position, means directly connecting the piston with a thrust plate of the pump and a branch conduit leading from the control conduit to each cylinder.
References Cited (Backward Citations)
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US2823518A
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US2870776A
Cited
US2965036A
Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |