Patent US3130540A successfully refreshed from Google Patents.
US3130540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic engine starting method
Assignee: New York Air Brake LLC
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Filing: 1962-02-01
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Granted: 1964-04-28
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Expires: 1982-02-01
Abstract
No abstract record available.
Inventors
- 👤 Edward V Manning
- 👤 James R Parr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:31
CPC Classifications
F; F02; F02N; F02N7/00; F02N7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE METHOD OF ACCELERATING AN ENGINE TO STARTER CUTOUT SPEED DURING A STARTING CYCLE USING A VARIABLE DISPLACEMENT HYDRAULIC MOTOR COMPRISING THE STEPS OF (A) SUPPLYING FLUID TO THE MOTOR AT A PRESSURE THAT DECREASES AS THE LENGTH OF TIME THE MOTOR OPERATES INCREASES; (B) OPERATING THE MOTOR AT MAXIMUM DISPLACEMENT FROM THE BEGINNING OF THE STARTING CYCLE UNTIL THE ENGINE HAS REACHED A CERTAIN SPEED SUBSTANTIALLY LESS THAN CUT-OUT SPEED; AND (C) THEREAFTER PROGRESSIVELY REDUCING MOTOR DISPLACEMENT TOWARD ZERO AS THE ENGINE ACCELERATES TO STARTER CUT-OUT SPEED AT A RATE PROPORTIONAL TO ENGINE ACCELERATION.
Claim 2
Independent Claim
95 words
THE METHOD OF ACCELERATING AN ENGINE TO STARTER CUTOUT SPEED DURING A STARTING CYCLE USING A VARIABLE DISPLACEMENT HYDRAULIC MOTOR COMPRISING THE STEPS OF (A) SUPPLYING FLUID TO THE MOTOR AT A PRESSURE THAT DECREASES AS THE LENGTH OF TIME THE MOTOR OPERATES INCREASES; (B) OPERATING THE MOTOR AT MAXIMUM DISPLACEMENT FROM THE BEGINNING OF THE STARTING CYCLE UNTIL THE ENGINE HAS REACHED A CERTAIN SPEED SUBSTANTIALLY LESS THAN CUT-OUT SPEED; AND (C) THEREAFTER PROGRESSIVELY REDUCING MOTOR DISPLACEMENT TOWARD ZERO AS THE ENGINE ACCELERATES TO STARTER CUT-OUT SPEED AT A RATE PROPORTIONAL TO ENGINE ACCELERATION.
References Cited (Backward Citations)
US2651493A
Cited
US2802452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |