US3138781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic drive circuits for remote control systems
Assignee: Siemens Mobility Ltd
•
Filing: 1961-12-20
•
Granted: 1964-06-23
•
Expires: 1981-12-20
Abstract
No abstract record available.
Inventors
- 👤 Hurst Stanley Leonard
- 👤 Paskins Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:43
CPC Classifications
H; H04; H04Q; H04Q9/00; H04Q9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN COMBINATION WITH A CYCLIC SCANNING REMOTE CONTROL SYSTEM INCLUDING AN OFFICE AND AT LEAST ONE REMOTE STATION CONNECTED BY A COMMUNICATION CHANNEL, SAID SYSTEM INCLUDING A MASTER STEPPING GENERATOR MEANS HAVING CONNECTIONS TO SAID CHANNEL FOR TRANSMITTING A SUCCESSIVE SERIES OF STEPPING PULSES FOR DRIVING ALL LOCATIONS THROUGH THE SCANNING CYCLE AND A RECEIVER MEANS AT SAID STATION WITH CONNECTIONS TO SAID CHANNEL AND RESPONSIVE TO SAID STEPPING PULSES TO PROVIDE A LOCAL PULSE OUTPUT, (A) A DETECTION MEANS CONTROLLED BY SAID RECEIVER MEANS AND RESPONSIVE TO THE PULSE OUTPUT THEREOF FOR MAINTAINING A SIGNAL OUTPUT OF A CHARACTER DETERMINED BY THE RECEIVED STEPPING PULSES,
Claim 2
Dependent Claim
106 words
IN COMBINATION WITH A CYCLIC SCANNING REMOTE CONTROL SYSTEM INCLUDING AN OFFICE AND AT LEAST ONE REMOTE STATION CONNECTED BY A COMMUNICATION CHANNEL, SAID SYSTEM INCLUDING A MASTER STEPPING GENERATOR MEANS HAVING CONNECTIONS TO SAID CHANNEL FOR TRANSMITTING A SUCCESSIVE SERIES OF STEPPING PULSES FOR DRIVING ALL LOCATIONS THROUGH THE SCANNING CYCLE AND A RECEIVER MEANS AT SAID STATION WITH CONNECTIONS TO SAID CHANNEL AND RESPONSIVE TO SAID STEPPING PULSES TO PROVIDE A LOCAL PULSE OUTPUT, (A) A DETECTION MEANS CONTROLLED BY SAID RECEIVER MEANS AND RESPONSIVE TO THE PULSE OUTPUT THEREOF FOR MAINTAINING A SIGNAL OUTPUT OF A CHARACTER DETERMINED BY THE RECEIVED STEPPING PULSES,
References Cited (Backward Citations)
US2229089A
Cited
US2442301A
Cited
US2806944A
Cited
US2992363A
Cited
US2802199A
Cited
US2936442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |