US3287722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote controlled switching system
Assignee: Individual
•
Filing: 1962-05-07
•
Granted: 1966-11-22
•
Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 Bryant F Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:53
CPC Classifications
G; G08; G08B; G08B1/00; G08B1/08; H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; Y; Y02; Y02E; Y02E60/00; Y04; Y04S; Y04S40/00; Y04S40/12; Y04S40/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A TRANSMITTER FOR APPLYING A TELEMETERING SIGNAL TO A POWER CIRCUIT WHICH COMPRISES: (A) A TUBE HAVING A HEATER, A CATHODE, CONTROL GRID, AND AN ANODE, (B) A CONNECTION EXTENDING DIRECTLY BETWEEN SAID ANODE AND ONE LINE OF SAID POWER CIRCUIT, (C) A SERIES CAPACITIVE-INDUCTANCE CIRCUIT CONNECTED AT ONE TERMINAL OF THE CAPACITOR TO THE ANODE OF SAID TUBE, AT AN INTERMEDIATE TAP ON THE INDUCTANCE TO THE SECOND LINE OF SAID POWER CIRCUIT, AND AT THE EXTREMITY OF THE INDUCTANCE TO SAID CATHODE, (D) TRANSFORMER MEANS CONNECTED ACROSS SAID POWER CIRCUIT FOR APPLYING HEZTER CURRENT TO SAID TUBE, AND (E) A GRID LEAK CIRCUIT CONNECTED BETWEEN SAID CONTROL GRID AND AN INTERMEDIATE POINT ON SAID INDUCTANCE FOR APPLYING BURSTS OF HIGH FREQUENCY ALTERNATING CURRENT TO SAID POWER CIRCUIT ON THOSE HALF CYCLES OF THE VOLTAGE ON SAID POWER CIRCUIT WHEN SAID ANODE IS POSITIVE RELATIVE TO SAID CATHODE.
Claim 2
Dependent Claim
149 words
A TRANSMITTER FOR APPLYING A TELEMETERING SIGNAL TO A POWER CIRCUIT WHICH COMPRISES: (A) A TUBE HAVING A HEATER, A CATHODE, CONTROL GRID, AND AN ANODE, (B) A CONNECTION EXTENDING DIRECTLY BETWEEN SAID ANODE AND ONE LINE OF SAID POWER CIRCUIT, (C) A SERIES CAPACITIVE-INDUCTANCE CIRCUIT CONNECTED AT ONE TERMINAL OF THE CAPACITOR TO THE ANODE OF SAID TUBE, AT AN INTERMEDIATE TAP ON THE INDUCTANCE TO THE SECOND LINE OF SAID POWER CIRCUIT, AND AT THE EXTREMITY OF THE INDUCTANCE TO SAID CATHODE, (D) TRANSFORMER MEANS CONNECTED ACROSS SAID POWER CIRCUIT FOR APPLYING HEZTER CURRENT TO SAID TUBE, AND (E) A GRID LEAK CIRCUIT CONNECTED BETWEEN SAID CONTROL GRID AND AN INTERMEDIATE POINT ON SAID INDUCTANCE FOR APPLYING BURSTS OF HIGH FREQUENCY ALTERNATING CURRENT TO SAID POWER CIRCUIT ON THOSE HALF CYCLES OF THE VOLTAGE ON SAID POWER CIRCUIT WHEN SAID ANODE IS POSITIVE RELATIVE TO SAID CATHODE.
References Cited (Backward Citations)
US1834771A
Cited
US2235169A
Cited
US2177843A
Cited
US2312127A
Cited
US2388576A
Cited
US2484700A
Cited
US2915743A
Cited
US3058095A
Cited
US3011102A
Cited
US3204245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |