Patent US3248964A successfully refreshed from Google Patents.
US3248964A
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Assignee: Borg Warner Corp
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Filing: 1963-05-07
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Granted: 1966-05-03
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Expires: 1983-05-07
Abstract
No abstract record available.
Inventors
- 👤 John S Ivey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:23
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; B; B60; B60W; B60W10/00; B60W10/04; B60W10/10; B60W10/11; Y; Y10; Y10S; Y10S74/00; Y10S74/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
IN A TRANSMISSION MECHANISM FOR AN AUTOMATIVE VEHICLE THE COMBINATION OF A DRIVE SHAFT, A DRIVEN SHAFT, GEARING INTERCONNECTING SAID SHAFTS, A HYDRAULIC CIRCUIT FOR SAID TRANSMISION INCLUDING PASSAGE MEANS AND A SOURCE OF FLUID PRESSURE, MEANS OPERATIVELY ASSOCIATED WITH SAID GEARING PROVIDING A FIRST DRIVE RATIO BETWEEN SAID SHAFTS INCLUDING A FIRST FLUID PRESSURE ACTUATED SERVOMOTOR IN SAID HYDRAULIC CIRCUIT, MEANS OPERATIVELY ASSOCIATED WITH SAID GEARING PROVIDING A SECOND DRIVE RATIO BETWEEN SAID SHAFTS INCLUDING A SECOND FLUID PRESSURE ACTUATED SERVOMOTOR IN SAID HYDRAULIC CIRCUIT, A SELECTOR VALVE IN SAID HYDRAULIC CIRCUIT HAVING A FIRST POSITION IN WHICH NO FLUID PRESSURE IS COMMUNICATED TO SAID SERVOMOTORS AND A SECOND POSITION IN WHICH FLUID PRESSURE IS COMMUNICATED TO SAID FIRST SERVOMOTOR TO ESTABLISH SAID FIRST DRIVE RATIO BETWEEN SAID SHAFTS, AND MEANS IN SAID HYDRAULIC CIRCUIT INITIALLY HYDRAULICALLY INTERCONNECTING SAID FIRST SERVOMOTOR AND SAID SECOND SERVOMOTOR WHILE SAID FIRST SERVOMOTOR IS BEING ACTUATED WHEREBY SAID SERVMOTOR WILL ACT AS A HYDRAULIC ACCUMULATOR FOR THE FLUID BEING DELIVERED TO SAID FIRST SERVOMOTOR TO CUSHION THE ACTUATION OF SAID FIRST SERVOMOTOR AND SAID MEANS SUBSEQUENTLY ACTING TO INTERRUPT SAID HYDRAULIC INTER-CONNECTION TO ALLOW SAID FIRST RATIO DRIVE TO BE EFFECTIVE FOR DRIVING THE VEHICLE.
Claim 2
Dependent Claim
202 words
IN A TRANSMISSION MECHANISM FOR AN AUTOMATIVE VEHICLE THE COMBINATION OF A DRIVE SHAFT, A DRIVEN SHAFT, GEARING INTERCONNECTING SAID SHAFTS, A HYDRAULIC CIRCUIT FOR SAID TRANSMISION INCLUDING PASSAGE MEANS AND A SOURCE OF FLUID PRESSURE, MEANS OPERATIVELY ASSOCIATED WITH SAID GEARING PROVIDING A FIRST DRIVE RATIO BETWEEN SAID SHAFTS INCLUDING A FIRST FLUID PRESSURE ACTUATED SERVOMOTOR IN SAID HYDRAULIC CIRCUIT, MEANS OPERATIVELY ASSOCIATED WITH SAID GEARING PROVIDING A SECOND DRIVE RATIO BETWEEN SAID SHAFTS INCLUDING A SECOND FLUID PRESSURE ACTUATED SERVOMOTOR IN SAID HYDRAULIC CIRCUIT, A SELECTOR VALVE IN SAID HYDRAULIC CIRCUIT HAVING A FIRST POSITION IN WHICH NO FLUID PRESSURE IS COMMUNICATED TO SAID SERVOMOTORS AND A SECOND POSITION IN WHICH FLUID PRESSURE IS COMMUNICATED TO SAID FIRST SERVOMOTOR TO ESTABLISH SAID FIRST DRIVE RATIO BETWEEN SAID SHAFTS, AND MEANS IN SAID HYDRAULIC CIRCUIT INITIALLY HYDRAULICALLY INTERCONNECTING SAID FIRST SERVOMOTOR AND SAID SECOND SERVOMOTOR WHILE SAID FIRST SERVOMOTOR IS BEING ACTUATED WHEREBY SAID SERVMOTOR WILL ACT AS A HYDRAULIC ACCUMULATOR FOR THE FLUID BEING DELIVERED TO SAID FIRST SERVOMOTOR TO CUSHION THE ACTUATION OF SAID FIRST SERVOMOTOR AND SAID MEANS SUBSEQUENTLY ACTING TO INTERRUPT SAID HYDRAULIC INTER-CONNECTION TO ALLOW SAID FIRST RATIO DRIVE TO BE EFFECTIVE FOR DRIVING THE VEHICLE.
References Cited (Backward Citations)
US2981126A
Cited
US3000230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |