Patent US1994186A successfully refreshed from Google Patents.
US3284668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic speed sensor
Assignee: Bendix Corp
•
Filing: 1963-10-28
•
Granted: 1966-11-08
•
Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Donald B Heaslip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
G; G05; G05D; G05D13/00; F; F01; F01D; F01D17/00; F01D17/02; F01D17/06; F02; F02C; F02C7/00; F02C7/26; G01; G01P; G01P1/00; G01P1/07; G01P1/08; G01P1/10; G01P1/106; G01P3/00; G01P3/02; G01P3/14; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/484
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A CONTROL SYSTEM FOR A MECHANICAL SOURCE OF POWER HAVING AN ASSOCIATED PRIMARY SOURCE OF ELECTRICAL A SIGNAL CONNECTED TO A LOAD COMPRISING: ELECTRICAL SIGNAL GENERATING MEANS GENERATING A SIGNAL PROPORTIONAL TO THE SPEED OF A PORTION OF THE MECHANICAL SOURCE OF POWER; A RESONANT REED RELAY HAVING A PLURALITY OF CONTACTS ELECTROMAGNETICALLY LINKED TO THE ELECTRICAL SIGNAL GENERATING MEANS; A SILICON CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A GATE, ONE OF SAID RESONANT RELAY CONTACTS CONNECTED TO THE ANODE OF THE SILICON CONTROLLED RECTIFIER, ANOTHER OF SAID RESONANT RELAY CONTACTS CONNECTED TO THE GATE LEAD OF THE SILICON CONTROLLED RECTIFIER; A SWITCH MEANS HAVING A FIRST ELECTRICAL CONNECTION BETWEEN THE CATHODE OF SAID SILICON CONTROLLED RECTIFIER AND THE PRIMARY SOURCE OF ELECTRICAL POWER AND A SECOND ELECTRICAL CONNECTION FOR THE LOAD, THE SWITCH MEANS CONTROLLING THE ELECTRICAL ENERGIZATION OF THE LOAD; AND THE ANODE OF THE SILICON CONTROLLED RECIFIER HAVING AN ELECTRICAL CONNECTION FOR THE PRIMARY SOURCE OF ELECTRICAL POWER.
Claim 2
Dependent Claim
163 words
A CONTROL SYSTEM FOR A MECHANICAL SOURCE OF POWER HAVING AN ASSOCIATED PRIMARY SOURCE OF ELECTRICAL A SIGNAL CONNECTED TO A LOAD COMPRISING: ELECTRICAL SIGNAL GENERATING MEANS GENERATING A SIGNAL PROPORTIONAL TO THE SPEED OF A PORTION OF THE MECHANICAL SOURCE OF POWER; A RESONANT REED RELAY HAVING A PLURALITY OF CONTACTS ELECTROMAGNETICALLY LINKED TO THE ELECTRICAL SIGNAL GENERATING MEANS; A SILICON CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A GATE, ONE OF SAID RESONANT RELAY CONTACTS CONNECTED TO THE ANODE OF THE SILICON CONTROLLED RECTIFIER, ANOTHER OF SAID RESONANT RELAY CONTACTS CONNECTED TO THE GATE LEAD OF THE SILICON CONTROLLED RECTIFIER; A SWITCH MEANS HAVING A FIRST ELECTRICAL CONNECTION BETWEEN THE CATHODE OF SAID SILICON CONTROLLED RECTIFIER AND THE PRIMARY SOURCE OF ELECTRICAL POWER AND A SECOND ELECTRICAL CONNECTION FOR THE LOAD, THE SWITCH MEANS CONTROLLING THE ELECTRICAL ENERGIZATION OF THE LOAD; AND THE ANODE OF THE SILICON CONTROLLED RECIFIER HAVING AN ELECTRICAL CONNECTION FOR THE PRIMARY SOURCE OF ELECTRICAL POWER.
References Cited (Backward Citations)
US2941120A
Cited
US3213323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |