US4259930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for starting a stationary unit
Assignee: Volkswagen AG
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Filing: 1979-07-26
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Granted: 1981-04-07
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Expires: 1999-07-26
Abstract
Abstract A device for starting a stationary unit, which unit includes a prime mover, e.g. an internal combustion engine, and a machine, e.g. a compressor of a heat pump system, rigidly coupled thereto by a shaft, has a flywheel fitted on the shaft. This flywheel is automatically engaged and disengaged from the shaft, according to the speed of the flywheel, by means of a clutch.
Inventors
- 👤 Peter Hofbauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:08
CPC Classifications
F; F02; F02N; F02N5/00; F02N5/04; F02N11/00; F02N11/08; Y; Y10; Y10T; Y10T74/00; Y10T74/13; Y10T74/131; Y10T74/134
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
83 words
A device for starting a stationary unit including a prime mover, e.g. an internal combustion engine, and a machine rigidly coupled thereto, e.g. a compressor of a heat pump system, wherein the device includes a flywheel fitted on a common shaft connecting the prime mover and the machine, which flywheel is engageable and disengageable from the shaft by means of a clutch and is driveable by a starter, characterized in that the clutch is actuated automatically according to the speed of the flywheel.
Claim 2
Independent Claim
83 words
A device for starting a stationary unit including a prime mover, e.g. an internal combustion engine, and a machine rigidly coupled thereto, e.g. a compressor of a heat pump system, wherein the device includes a flywheel fitted on a common shaft connecting the prime mover and the machine, which flywheel is engageable and disengageable from the shaft by means of a clutch and is driveable by a starter, characterized in that the clutch is actuated automatically according to the speed of the flywheel.
Claim 3
Dependent Claim
27 words
A device according to claim 1, characterized in that the clutch is engageable at a flywheel speed higher than the speed at which the clutch is disengageable.
Claim 4
Dependent Claim
51 words
A device as claimed in claim 1 or 2 wherein the clutch is operated by a servomotor in response to signals generated by a speed sensor monitoring the flywheel speed, said speed signals being compared to preassigned values in a control unit so as to control the actuation of said servomotor.
Claim 5
Dependent Claim
20 words
A device as claimed in claim 1 wherein the starter is disengageable from said flywheel upon engagement of said clutch.
References Cited (Backward Citations)
US1215783A
Cited
US1248870A
Cited
US1275941A
Cited
US1259876A
Cited
US3215234A
Cited
US3882950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |