Patent US3403587A successfully refreshed from Google Patents.
US3403587A
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Control devices acting as a function of frequency and of at least one auxiliary parameter
Assignee: Renault SA
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Filing: 1966-08-26
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Granted: 1968-10-01
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Expires: 1986-08-26
Abstract
No abstract record available.
Inventors
- 👤 Castelet Gaetan De Coye De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:02
CPC Classifications
F; F16; F16H; F16H59/00; F16H59/36; F16H59/14; F16H59/18; F16H61/00; F16H61/02; F16H61/0202; F16H61/0204; F16H61/0206; F16H61/0211; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A DEVICE FOR CONTROLLING A MEMBER SUCH AS AN AUTOMATIC GEAR BOX OF AN AUTOMOBILE VEHICLE, AS A FUNCTION OF THE SPEED OF A ROTATING SHAFT OF SAID VEHICLE AND OF AT LEAST ONE AUXILIARY PARAMETER COMPRISING TACHOMETRIC MEANS INCLUDING PICKUP MEANS OPERATIVELY CONNECTED TO SAID SHAFT, TIME-CONSTANT CIRCUIT MEANS INCLUDING A UNIJUNCTION TRANSISTOR AND CAPACITOR, AN OUTPUT CIRCUIT OPERATIVELY CONNECTED TO SAID TIME CONSTANT CIRCUIT, MEANS TO EFFECT A COMPARISON OF THE DURATION OF A SIGNAL EMANATING FROM SAID TACHOMETRIC MEANS WITH THE STRIKING TIME TO SAID UNIJUNCTION TRANSISTOR IN ORDER TO SUPPLY LOGICAL CONTROL SIGNALS BY MEANS OF SAID OUTPUT CIRCUIT, THE DURATION OF THE SIGNAL EMANATING FROM SAID TACHOMETRIC MEANS BEING VARIABLE BY SAID AT LEAST ONE AUXILIARY PARAMETER, WHILE THE OUTPUT CIRCUIT REACTS IN ADDITION ON THE STRIKING DURATION OF THE UNIJUNCTION TRANSISTOR, IN ORDER TO OBTAIN A PREDETERMINED DELAY EFFECT BETWEEN THE ACTIONS ON THE MEMBER TO BE CONTROLLED AT INCREASING SPEED AT A DECREASING SPEED.
Claim 2
Independent Claim
161 words
A DEVICE FOR CONTROLLING A MEMBER SUCH AS AN AUTOMATIC GEAR BOX OF AN AUTOMOBILE VEHICLE, AS A FUNCTION OF THE SPEED OF A ROTATING SHAFT OF SAID VEHICLE AND OF AT LEAST ONE AUXILIARY PARAMETER COMPRISING TACHOMETRIC MEANS INCLUDING PICKUP MEANS OPERATIVELY CONNECTED TO SAID SHAFT, TIME-CONSTANT CIRCUIT MEANS INCLUDING A UNIJUNCTION TRANSISTOR AND CAPACITOR, AN OUTPUT CIRCUIT OPERATIVELY CONNECTED TO SAID TIME CONSTANT CIRCUIT, MEANS TO EFFECT A COMPARISON OF THE DURATION OF A SIGNAL EMANATING FROM SAID TACHOMETRIC MEANS WITH THE STRIKING TIME TO SAID UNIJUNCTION TRANSISTOR IN ORDER TO SUPPLY LOGICAL CONTROL SIGNALS BY MEANS OF SAID OUTPUT CIRCUIT, THE DURATION OF THE SIGNAL EMANATING FROM SAID TACHOMETRIC MEANS BEING VARIABLE BY SAID AT LEAST ONE AUXILIARY PARAMETER, WHILE THE OUTPUT CIRCUIT REACTS IN ADDITION ON THE STRIKING DURATION OF THE UNIJUNCTION TRANSISTOR, IN ORDER TO OBTAIN A PREDETERMINED DELAY EFFECT BETWEEN THE ACTIONS ON THE MEMBER TO BE CONTROLLED AT INCREASING SPEED AT A DECREASING SPEED.
References Cited (Backward Citations)
US3301085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |