Patent US3134470A successfully refreshed from Google Patents.
US3134470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch control system
Assignee: ELMEG Elektro Mechanik GmbH
•
Filing: 1960-10-17
•
Granted: 1964-05-26
•
Expires: 1980-10-17
Abstract
No abstract record available.
Inventors
- 👤 Weis Alfred
- 👤 Dick Henrich
- 👤 Sussebach Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:02
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/06; F16D48/064; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1021; F16D2500/1022; F16D2500/104; F16D2500/10406; F16D2500/10412; F16D2500/10443; F16D2500/10475; F16D2500/30; F16D2500/304; F16D2500/30404; F16D2500/306; F16D2500/3067; F16D2500/3069; F16D2500/314; F16D2500/31406; F16D2500/3144; F16D2500/3146; F16D2500/31466; F16D2500/50; F16D2500/504; F16D2500/5045; F16D2500/70; F16D2500/702; F16D2500/70252; F16D2500/7027; F16D2500/704; F16D2500/70402; F16D2500/7042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A ROTATIONAL SPEED RESPONSIVE CONTROL MECHANISM FOR THE TRANSMISSION SYSTEM OF A VEHICLE HAVING AN ENGINE, A GENERATOR DRIVEN BY SAID ENGINE, AND AN ELECTROMAGNETIC CLUTCH, SAID MECHANISM COMPRISING, IN COMBINATION: (A) CONVERTER MEANS INDEPENDENT OF THE MAGNITUDE OF THE OUTPUT VOLTAGE OF SAID GENERATOR FOR CONTINUOUSLY PRODUCING AN OUTPUT SIGNAL WHICH IS AT ALL TIMES A FUNCTION OF THE ROTATIONAL SPEED OF THE ENGINE; (B) CONTINUOUSLY OPERATIVE CONTROL MEANS HAVE AN INPUT CONNECTED TO THE OUTPUT OF SAID CONVERTER MEANS, SAID CONTROL MEANS HAVING AN OUTPUT CONNECTED TO SAID CLUTCH FOR CONTROLLING THE EXCITATION THEREOF; AND (C) EXCLUSIVELY ELECTRONIC MEANS ALSO CONNECTED TO THE OUTPUT OF SAID CONVERTER MEANS FOR PREVENTING THE OUTPUT SIGNAL THEREOF FROM BEING APPLIED TO SAID CONTROL MEANS WHEN SAID OUTPUT SIGNAL IS SUBSTANTIALLY THAT WHICH IS PRODUCED BY SAID CONVERTER MEANS WHILE SAID ENGINE OPERATES AT IDLING SPEED.
Claim 2
Dependent Claim
144 words
A ROTATIONAL SPEED RESPONSIVE CONTROL MECHANISM FOR THE TRANSMISSION SYSTEM OF A VEHICLE HAVING AN ENGINE, A GENERATOR DRIVEN BY SAID ENGINE, AND AN ELECTROMAGNETIC CLUTCH, SAID MECHANISM COMPRISING, IN COMBINATION: (A) CONVERTER MEANS INDEPENDENT OF THE MAGNITUDE OF THE OUTPUT VOLTAGE OF SAID GENERATOR FOR CONTINUOUSLY PRODUCING AN OUTPUT SIGNAL WHICH IS AT ALL TIMES A FUNCTION OF THE ROTATIONAL SPEED OF THE ENGINE; (B) CONTINUOUSLY OPERATIVE CONTROL MEANS HAVE AN INPUT CONNECTED TO THE OUTPUT OF SAID CONVERTER MEANS, SAID CONTROL MEANS HAVING AN OUTPUT CONNECTED TO SAID CLUTCH FOR CONTROLLING THE EXCITATION THEREOF; AND (C) EXCLUSIVELY ELECTRONIC MEANS ALSO CONNECTED TO THE OUTPUT OF SAID CONVERTER MEANS FOR PREVENTING THE OUTPUT SIGNAL THEREOF FROM BEING APPLIED TO SAID CONTROL MEANS WHEN SAID OUTPUT SIGNAL IS SUBSTANTIALLY THAT WHICH IS PRODUCED BY SAID CONVERTER MEANS WHILE SAID ENGINE OPERATES AT IDLING SPEED.
References Cited (Backward Citations)
US2718157A
Cited
US2539649A
Cited
US2788872A
Cited
US2759580A
Cited
US2688388A
Cited
US2880831A
Cited
US2761538A
Cited
US2974769A
Cited
US2999573A
Cited
US2990927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |