Patent US4870731A successfully refreshed from Google Patents.
US3213618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of regulating the input torque of a rotating barrel and plungers type hydraulic transmission
Assignee: Automobiles Citroen SA
•
Filing: 1964-03-27
•
Granted: 1965-10-26
•
Expires: 1984-03-27
Abstract
No abstract record available.
Inventors
- 👤 Cadiou Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:29
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; F; F01; F01B; F01B3/00; F01B3/10; F01B3/103; F01B3/106; F04; F04B; F04B49/00; F04B49/002; F04B49/08; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/468; F16H61/42; F16H61/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF REGULATING THE INPUT TORQUE OF A REVOLVING-BARREL-AND-PLUNGERS TYPE HYDRAULIC TRANSMISMISSION, MORE PARTICULARLY FOR MOTOR VEHICLES, WHEREIN THE CONSTANCY OF SAID INPUT TORQUE FOR A GIVEN POWER IS OBTAINED BY VARYING THE CUBIC CAPACITY OF EITHER GENERATOR UNIT OR MOTOR UNIT OF SAID TRANSMISSION, THESE TWO PARAMETERS BEING SUSCEPTIBLE OF BEING USED EXCLUSIVELY OR CONSECUTIVELY, CHARACTERIZED IN THAT MODE OF REGULATION IS BASED ON COONTINUOUSLY MAINTAINING THE BALANCE, BY MEANS OF A DISTRIBUTOR-REGULATOR, BETWEEN TWO FORCES WHICH ARE RESPECTIVELY PROPORTIONAL TO HIGH PRESSURE OF A TRANSMISSION LIQUID AND TO REFERENCE PRESSURE OF A MASS OF GAS OF SUBSTANTIALLY CONSTANT TEMPERATURE ENCLOSED AT LEAST PARTLY IN A DEFORMABLE CHAMBER AND WHOSE VOLUME, WHICH IS ADJUSTABLE AS A FUNCTIOON OF THE POWER REQUIRED, IS MADE PROPORTIONAL TO THE CUBIC CAPACITY OF SAID GENERATOR, CORRECTIONS TO TRANSMISSION RATIO BEIONG EFFECTED BY OPERATING OON AN ASSOCIATED IMPULSOR PLATE OF EITHER SAID GENERATOR OR SAID MOTOR THROUGH HYDRAULIC MEANS CONTROLLED BY SAID DISTRIBUTOR-REGULATOR.
Claim 2
Independent Claim
160 words
A METHOD OF REGULATING THE INPUT TORQUE OF A REVOLVING-BARREL-AND-PLUNGERS TYPE HYDRAULIC TRANSMISMISSION, MORE PARTICULARLY FOR MOTOR VEHICLES, WHEREIN THE CONSTANCY OF SAID INPUT TORQUE FOR A GIVEN POWER IS OBTAINED BY VARYING THE CUBIC CAPACITY OF EITHER GENERATOR UNIT OR MOTOR UNIT OF SAID TRANSMISSION, THESE TWO PARAMETERS BEING SUSCEPTIBLE OF BEING USED EXCLUSIVELY OR CONSECUTIVELY, CHARACTERIZED IN THAT MODE OF REGULATION IS BASED ON COONTINUOUSLY MAINTAINING THE BALANCE, BY MEANS OF A DISTRIBUTOR-REGULATOR, BETWEEN TWO FORCES WHICH ARE RESPECTIVELY PROPORTIONAL TO HIGH PRESSURE OF A TRANSMISSION LIQUID AND TO REFERENCE PRESSURE OF A MASS OF GAS OF SUBSTANTIALLY CONSTANT TEMPERATURE ENCLOSED AT LEAST PARTLY IN A DEFORMABLE CHAMBER AND WHOSE VOLUME, WHICH IS ADJUSTABLE AS A FUNCTIOON OF THE POWER REQUIRED, IS MADE PROPORTIONAL TO THE CUBIC CAPACITY OF SAID GENERATOR, CORRECTIONS TO TRANSMISSION RATIO BEIONG EFFECTED BY OPERATING OON AN ASSOCIATED IMPULSOR PLATE OF EITHER SAID GENERATOR OR SAID MOTOR THROUGH HYDRAULIC MEANS CONTROLLED BY SAID DISTRIBUTOR-REGULATOR.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |