US3170450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic system
Assignee: New York Air Brake LLC
•
Filing: 1961-06-23
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Granted: 1965-02-23
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Expires: 1981-06-23
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Kent
- 👤 Edward V Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:40
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/472; F01; F01B; F01B3/00; F02; F02N; F02N7/00; F02N7/06; F04; F04B; F04B17/00; F04B17/05; F04B49/00; F16H61/42; F16H61/423; B; B60; B60K; B60K6/00; B60K6/08; B60K6/12; B60K2006/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A HYDRAULIC STARTING SYSTEM FOR ACCELERATING AN ENGINE TO STARTER CUT-OUT SPEED COMPRISING (A) A VARIABLE DISPLACEMENT HYDRAULIC MOTOR HAVING A DISPLACEMENT CONTROL ELEMENT WHICH IS MOVABLE BETWEEN MINIMUM AND MAXIMUM DISPLACEMENT-ESTABLISHING POSITION; (B) A SOURCE OF HYDRAULIC FLUID CAPABLE OF DELIVERING FLUID AT A SUBSTANTIALLY CONSTANT PRESSURE AND AT A RATE WHICH VARIES BETWEEN A MINIMUM VALUE AND A MAXIMUM VALUE EQUAL TO THE DEMAND OF THE MOTOR WHEN IT IS RUNNING AT A CERTAIN SPEED LESS THAN CUTOUT SPEED AND ITS DISPLACEMENT CONTROL ELEMENT IS IN MAXIMUM DISPLACEMENT-ESTABLISHING POSITION; (C) CONDUIT MEANS CONNECTED WITH THE MOTOR AND THE SOURCE FOR LEADING FLUID FROM THE SOURCE TO AND THROUGH THE MOTOR; AND
Claim 2
Dependent Claim
113 words
A HYDRAULIC STARTING SYSTEM FOR ACCELERATING AN ENGINE TO STARTER CUT-OUT SPEED COMPRISING (A) A VARIABLE DISPLACEMENT HYDRAULIC MOTOR HAVING A DISPLACEMENT CONTROL ELEMENT WHICH IS MOVABLE BETWEEN MINIMUM AND MAXIMUM DISPLACEMENT-ESTABLISHING POSITION; (B) A SOURCE OF HYDRAULIC FLUID CAPABLE OF DELIVERING FLUID AT A SUBSTANTIALLY CONSTANT PRESSURE AND AT A RATE WHICH VARIES BETWEEN A MINIMUM VALUE AND A MAXIMUM VALUE EQUAL TO THE DEMAND OF THE MOTOR WHEN IT IS RUNNING AT A CERTAIN SPEED LESS THAN CUTOUT SPEED AND ITS DISPLACEMENT CONTROL ELEMENT IS IN MAXIMUM DISPLACEMENT-ESTABLISHING POSITION; (C) CONDUIT MEANS CONNECTED WITH THE MOTOR AND THE SOURCE FOR LEADING FLUID FROM THE SOURCE TO AND THROUGH THE MOTOR; AND
References Cited (Backward Citations)
US2838908A
Cited
US2986872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |