US3335829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supplying of electromagnetic clutches of vehicles
Assignee: Renault SA
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Filing: 1965-10-23
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Granted: 1967-08-15
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Castelet Gaetan De Coye De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:24
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/06; F16D27/00; F16D27/02; F16D29/00; F16D37/00; F16D37/02; F16D48/064; F16D2027/002; F16D2037/001; F16D2037/002; 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; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/7041; F16D2500/70418; F16D2500/7042; F16D2500/71; F16D2500/7107; F16D2500/7109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A DEVICE FOR SUPPLYING CURRENT TO A VEHICLE ELECTROMAGNETIC CLUTCH HAVING A ROTATABLE DRIVING CLUTCH MEMBER, A ROTATABLE DRIVEN CLUTCH MEMBER, AND A COIL, COMPRISING; AN ELECTRONIC CONTROL CIRCUIT CONNECTED TO SAID COIL FOR CONTROLLING CURRENT FLOW THROUGH SAID COIL IN RESPONSE TO THE SPEED OF SAID DRIVNG MEMBER; CONTACT MEANS POSITIONED BETWEEN SAID DRIVING CLUTCH MEMBER AND SAID DRIVEN CLUTCH MEMBER ADAPTED TO OPEN WHEN SAID DRIVING CLUTCH MEMBER ROTATES FASTER THAN SAID DRIVEN MEMBER; SAID ELECTRONIC CIRCUIT INCLUDING A TRANSFORMER PROVIDED WITH A FIRST SECONDARY WINDING CONNECTED TO SAID COIL AND A SECOND SECONDARY WINDING CONNECTED TO SAID CONTACT MEANS; AND TEMPERATURE SENSITIVE RESISTANCE MEANS CONNECTED ACROSS SAID CONTACT MEANS IN CONTACT WITH SAID ELECTROMAGNETIC CLUTCH FOR REGULATING THE CURRENT FLOW THROUGH SAID COIL IN ACCORDANCE WITH THE TEMPERATURE OF SAID CLUTCH WHEN SAID CONTACT MEANS IS OPEN.
Claim 2
Independent Claim
140 words
A DEVICE FOR SUPPLYING CURRENT TO A VEHICLE ELECTROMAGNETIC CLUTCH HAVING A ROTATABLE DRIVING CLUTCH MEMBER, A ROTATABLE DRIVEN CLUTCH MEMBER, AND A COIL, COMPRISING; AN ELECTRONIC CONTROL CIRCUIT CONNECTED TO SAID COIL FOR CONTROLLING CURRENT FLOW THROUGH SAID COIL IN RESPONSE TO THE SPEED OF SAID DRIVNG MEMBER; CONTACT MEANS POSITIONED BETWEEN SAID DRIVING CLUTCH MEMBER AND SAID DRIVEN CLUTCH MEMBER ADAPTED TO OPEN WHEN SAID DRIVING CLUTCH MEMBER ROTATES FASTER THAN SAID DRIVEN MEMBER; SAID ELECTRONIC CIRCUIT INCLUDING A TRANSFORMER PROVIDED WITH A FIRST SECONDARY WINDING CONNECTED TO SAID COIL AND A SECOND SECONDARY WINDING CONNECTED TO SAID CONTACT MEANS; AND TEMPERATURE SENSITIVE RESISTANCE MEANS CONNECTED ACROSS SAID CONTACT MEANS IN CONTACT WITH SAID ELECTROMAGNETIC CLUTCH FOR REGULATING THE CURRENT FLOW THROUGH SAID COIL IN ACCORDANCE WITH THE TEMPERATURE OF SAID CLUTCH WHEN SAID CONTACT MEANS IS OPEN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |