US3244957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting arrangements of electric drives with mechanical holding brakes
Assignee: Individual
•
Filing: 1960-08-31
•
Granted: 1966-04-05
•
Expires: 1980-08-31
Abstract
No abstract record available.
Inventors
- 👤 Spiess Gustav
- 👤 Rufli Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:40
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/18; B; B66; B66B; B66B1/00; B66B1/24; B66B1/28; B66D; B66D5/00; B66D2700/00; B66D2700/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN AN APPARATUS OF THE TYPE DESCRIBED, IN COMBINATION, (A) A ROTATABLE SHIFT; (B) MEANS FOR TRANSMITTING THE TORQUE OF A LOAD TO SAID SHAFT; (C) BRAKE MEANS CONNECTED TO SAID SHAFT FOR HOLDING SAID SHAFT STATIONARY AGAINST THE TORQUE OF SAID LOAD; (D) MEASURING MEANS FOR MEASURING THE TORQUE OF SAID LOAD WHILE SAID SHAFT IS BEING HELD STATIONARY BY SAID BRAKE MEANS; (E) SIGNAL GENERATING MEANS CONNECTED TO SAID MEASURING MEANS FOR GENERATING AN ELECTRICAL SIGNAL RESPONSIVE TO THE MAGNITUDE OF TE TORQUE MEASURED; (F) ELECTRICAL DRIVE MEANS CONNECTED TO SAID SIGNAL GENERATING MEANS FOR APPLYING A TORQUE TO SAID SHAFT RESPONSIVE TO SAID SIGNAL, THE TORQUE OF SAID DRIVE MEANS BEING OPPOSED AND SUBSTANTIALLY EQUAL TO THE TORQUE OF SAID LOAD.
Claim 2
Dependent Claim
124 words
IN AN APPARATUS OF THE TYPE DESCRIBED, IN COMBINATION, (A) A ROTATABLE SHIFT; (B) MEANS FOR TRANSMITTING THE TORQUE OF A LOAD TO SAID SHAFT; (C) BRAKE MEANS CONNECTED TO SAID SHAFT FOR HOLDING SAID SHAFT STATIONARY AGAINST THE TORQUE OF SAID LOAD; (D) MEASURING MEANS FOR MEASURING THE TORQUE OF SAID LOAD WHILE SAID SHAFT IS BEING HELD STATIONARY BY SAID BRAKE MEANS; (E) SIGNAL GENERATING MEANS CONNECTED TO SAID MEASURING MEANS FOR GENERATING AN ELECTRICAL SIGNAL RESPONSIVE TO THE MAGNITUDE OF TE TORQUE MEASURED; (F) ELECTRICAL DRIVE MEANS CONNECTED TO SAID SIGNAL GENERATING MEANS FOR APPLYING A TORQUE TO SAID SHAFT RESPONSIVE TO SAID SIGNAL, THE TORQUE OF SAID DRIVE MEANS BEING OPPOSED AND SUBSTANTIALLY EQUAL TO THE TORQUE OF SAID LOAD.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |