US3896618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for providing auxiliary power
Assignee: ICM ACQUISITIONS Inc A DE CORP
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Filing: 1974-05-31
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Granted: 1975-07-29
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Expires: 1994-05-31
Abstract
Abstract A system for providing auxiliary power comprises a primary circuit including a primary pump, an output line for providing primary power, and a return line. An auxiliary circuit includes an auxiliary pump, an output line for providing the auxiliary power and a return line. The auxiliary circuit also includes a valve for controlling fluid flow in the output and return line of the auxiliary circuit. A reservoir is connected to the primary return line and to the auxiliary return line. A controlled leakage apparatus for cooling the auxiliary pump is connected to the auxiliary circuit, the reservoir and the primary circuit, and in response to a predetermined pressure in the primary circuit directs a portion of auxiliary output fluid to the reservoir. Approximately all of the auxiliary output fluid is directed to the auxiliary output line when the primary circuit provides less than the predetermined pressure. The auxiliary circuit includes a drive apparatus connected to a vehicle for operating the auxiliary pump whenever the vehicle is moving.
Inventors
- 👤 William E Smith
- 👤 Charles J Bowden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:26
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/17
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
A system for providing auxiliary power which comprises: a primary means including a primary pump, an output line to provide primary power to a work function means, and a return line; an auxiliary means including an auxiliary pump, an output line to provide said auxiliary power, a return line and a vaLve means for controlling fluid flow in said output and return lines of said auxiliary means; a reservoir connected to said primary return line and said auxiliary return line; a controlled leakage means for cooling said auxiliary pump being connected to said auxiliary means, said reservoir and said primary means and being responsive to fluid pressure from said primary means for directing a portion of auxiliary output fluid to said reservoir when the primary means provides a predetermined pressure and directing a desired amount of said auxiliary output fluid to said auxiliary output line when said primary means provides less than said predetermined pressure.
Claim 2
Independent Claim
155 words
A system for providing auxiliary power which comprises: a primary means including a primary pump, an output line to provide primary power to a work function means, and a return line; an auxiliary means including an auxiliary pump, an output line to provide said auxiliary power, a return line and a vaLve means for controlling fluid flow in said output and return lines of said auxiliary means; a reservoir connected to said primary return line and said auxiliary return line; a controlled leakage means for cooling said auxiliary pump being connected to said auxiliary means, said reservoir and said primary means and being responsive to fluid pressure from said primary means for directing a portion of auxiliary output fluid to said reservoir when the primary means provides a predetermined pressure and directing a desired amount of said auxiliary output fluid to said auxiliary output line when said primary means provides less than said predetermined pressure.
Claim 3
Dependent Claim
34 words
The system defined in claim 1, wherein said controlled leakage means directs substantially all of said auxiliary output fluid to said auxiliary output line when said primary means provides less than said predetermined pressure.
Claim 4
Dependent Claim
81 words
The system defined in claim 2, wherein said controlled leakage means includes a switch valve means for causing said valve means to direct a portion of auxiliary pump output fluid to said reservoir and to recirculate the remainder of said pump output fluid through said auxiliary pump when said primary means provides a predetermined pressure and for directing substantially all of said auxiliary pump output fluid to said auxiliary output line when said primary means provides less than said predetermined pressure.
Claim 5
Dependent Claim
44 words
The system defined in claim 2, wherein said controlled leakage means further includes restrictive orifice means for directing said portion of auxiliary output fluid from said valve means through said switch means and to said reservoir when said primary means provides said predetermined pressure.
Claim 6
Dependent Claim
44 words
The system defined in claim 3, wherein said controlled leakage means further includes restrictive orifice means for directing said portion of auxiliary output fluid from said valve means through said switch means and to said reservoir when said primary means provides said predetermined pressure.
Claim 7
Dependent Claim
37 words
The system defined in claim 2, wherein said controlled leakage means includes a check valve means for preventing flow from said auxiliary output line to said work function means when said primary means provides said predetermined pressure.
Claim 8
Dependent Claim
42 words
The system defined in claim 2, wherein said work function means receives fluid from said primary means when said primary means provides said predetermined pressure and receives fluid from said auxiliary means when said primary means provides less than said predetermined 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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |