US3675112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Standby power system
Assignee: Dynamics Corp of America
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Filing: 1970-07-09
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Granted: 1972-07-04
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Expires: 1990-07-09
Abstract
Abstract A standby generator having a flywheel storage system coupled to the standby engine. The flywheel is also coupled to the motor generator set through a hydrostatic transmission system including a fixed stroke hydraulic motor and a variable stroke hydraulic pump.
Inventors
- 👤 Peter B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:44
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/02; H02K7/025; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/08; Y; Y02; Y02B; Y02B70/00; Y02B70/30; Y02E; Y02E60/00; Y02E60/16; Y04; Y04S; Y04S20/00; Y04S20/20; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A standby power generating system comprising a motor-generator set, a fuel powered engine, a variable stroke hydraulic pump directly coupled to said motorgenerator set, a fixed stroke hydraulic motor hydraulically directly coupled to said pump, a flywheel system directly coupled to the output of said fixed stroke hydraulic motor, means coupled to said motor generator set for varying the stroke of said pump in response to a variation in the speed of said motor generator, and clutch means for coupling said flywheel to said engine.
Claim 2
Dependent Claim
85 words
A standby power generating system comprising a motor-generator set, a fuel powered engine, a variable stroke hydraulic pump directly coupled to said motorgenerator set, a fixed stroke hydraulic motor hydraulically directly coupled to said pump, a flywheel system directly coupled to the output of said fixed stroke hydraulic motor, means coupled to said motor generator set for varying the stroke of said pump in response to a variation in the speed of said motor generator, and clutch means for coupling said flywheel to said engine.
Claim 3
Dependent Claim
27 words
The power generating system of claim 1 wherein said flywheel system is normally driven at a rate substantially greater than the rate of operation of said generator.
Claim 4
Dependent Claim
47 words
The power generating system of claim 1 wherein said means coupled between said motor-generator set and said hydraulic pump comprises a tachometer sensor connected to said motor-generator set, and a mechanical stroke control connected to said hydraulic pump and responsive to the output of said tachometer sensor.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |