US3258094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic clutch control system
Assignee: Robert Bosch GmbH
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Filing: 1964-12-18
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Granted: 1966-06-28
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Expires: 1984-12-18
Abstract
No abstract record available.
Inventors
- 👤 Zechnall Richard
- 👤 Spittler Heinrich
- 👤 Scholl Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:07
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/0016; H02P29/0027; B; B60; B60K; B60K23/00; B60K23/02; F; F01; F01P; F01P7/00; F01P7/02; F01P7/04; F16; F16D; F16D48/00; F16D48/06; F16D48/064; H02P15/00; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1021; F16D2500/1022; F16D2500/30; F16D2500/316; F16D2500/3166; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/70418; F16D2500/7042; F16D2500/71; F16D2500/7107; F16D2500/7109
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
AN ELECTROMAGNETIC CLUTCH CONTROL SYSTEM, COMPRISING AN ELECTROMAGNETICALLY OPERATED CLUTCH HAVING AN AIR SPACE; A CLUTCH COIL FOR OPERATING SAID CLUTCH, SAID CLUTCH COIL VARYING IN INDUCTANCE IN ACCORDANCE WITH VARIATION OF THE AIR SPACE OF SAID CLUTCH; A PULSE CIRCUIT FOR PRODUCING OUTPUT PULSES FOR ENERGIZING SAID CLUTCH COIL, SAID PULSE CIRCUIT HAVING AN INPUT, AN OUTPUT AND TIMING MEANS FOR DETERMINING AND VARYING THE DURATION OF SAID OUTPUT PULSES; ENERGIZING MEANS CONNECTED TO THE INPUT OF SAID PULSE CIRCUIT FOR ENERGIZING SAID PULSE CIRCUIT TO PRODUCE SAID OUTPUT PULSES; OUTPUT MEANS COUPLING THE OUTPUT OF SAID PULSE CIRCUIT TO SAID CLUTCH COIL FOR SUPPLYING THE OUTPUT PULSES PRODUCED BY SAID PULSE CIRCUIT TO SAID CLUTCH COIL; AND COUPLING MEANS COUPLING SAID CLUTCH COIL TO THE TIMING MEANS OF SAID PULSE CIRCUIT IN ACCORDANCE WITH VARIATION OF THE INDUCTANCE OF SAID CLUTCH COIL IN A MANNER WHEREBY A VARIATION OF THE AIR SPACE OF SAID CLUTCH IS COUNTERACTED.
Claim 2
Dependent Claim
159 words
AN ELECTROMAGNETIC CLUTCH CONTROL SYSTEM, COMPRISING AN ELECTROMAGNETICALLY OPERATED CLUTCH HAVING AN AIR SPACE; A CLUTCH COIL FOR OPERATING SAID CLUTCH, SAID CLUTCH COIL VARYING IN INDUCTANCE IN ACCORDANCE WITH VARIATION OF THE AIR SPACE OF SAID CLUTCH; A PULSE CIRCUIT FOR PRODUCING OUTPUT PULSES FOR ENERGIZING SAID CLUTCH COIL, SAID PULSE CIRCUIT HAVING AN INPUT, AN OUTPUT AND TIMING MEANS FOR DETERMINING AND VARYING THE DURATION OF SAID OUTPUT PULSES; ENERGIZING MEANS CONNECTED TO THE INPUT OF SAID PULSE CIRCUIT FOR ENERGIZING SAID PULSE CIRCUIT TO PRODUCE SAID OUTPUT PULSES; OUTPUT MEANS COUPLING THE OUTPUT OF SAID PULSE CIRCUIT TO SAID CLUTCH COIL FOR SUPPLYING THE OUTPUT PULSES PRODUCED BY SAID PULSE CIRCUIT TO SAID CLUTCH COIL; AND COUPLING MEANS COUPLING SAID CLUTCH COIL TO THE TIMING MEANS OF SAID PULSE CIRCUIT IN ACCORDANCE WITH VARIATION OF THE INDUCTANCE OF SAID CLUTCH COIL IN A MANNER WHEREBY A VARIATION OF THE AIR SPACE OF SAID CLUTCH IS COUNTERACTED.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |