US3219912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized power supply
Assignee: HP Inc
•
Filing: 1961-11-30
•
Granted: 1965-11-23
•
Expires: 1981-11-30
Abstract
No abstract record available.
Inventors
- 👤 Harrison Charles William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:38
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/565; G05F1/569; G05F1/573
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A POWER SUPPLY FOR DELIVERING A REGULATED D.C. SIGNAL TO A LOAD, SAID SUPPLY COMPRISING: A SOURCE OF UNREGULATED D.C. SIGNAL; A REGULATING ELEMENT; A SENSING RESISTOR IN SERIES WITH THE LOAD; MEANS INCLUDING SAID REGULATING ELEMENT AND SAID SENSING RESISTOR AND CONNECTING SAID SOURCE TO SAID LOAD; MEANS INCLUDING A PLURALITY OF RESISTORS SERIALLY-CONNECTED ACROSS SAID LOAD TO RECEIVE A SIGNAL RELATED TO THE SIGNAL DELIVERED TO THE LOAD; FIRST FEEDBACK MEANS CONNECTED TO A NODE OF SAID SERIALLY-CONNECTED RESISTORS AND TO SAID REGULATING ELEMENT FOR CONTROLLING THE CONDUCTIVITY THEREOF IN RESPONSE TO SIGNAL AT SAID NODE; SECOND FEEDBACK MEANS CONNECTED TO SAID SENSING RESISTOR AND TO SAID REGULATING ELEMENT FOR CONTROLLING THE CONDUCTIVITY THEREOF WHEN THE VOLTAGE ACROSS SAID SENSING RESISTOR EXCEEDS A PREDETERMINED VALUE; AND CIRCUIT MEANS CONNECTED TO SAID SENSING RESISTOR AND TO SAID NODE FOR SUPPLYING CURRENT THERETO WHEN THE VOLTAGE ACROSS SAID SENSING RESISTOR EXCEEDS SAID PREDETERMINED VALUE.
Claim 2
Dependent Claim
154 words
A POWER SUPPLY FOR DELIVERING A REGULATED D.C. SIGNAL TO A LOAD, SAID SUPPLY COMPRISING: A SOURCE OF UNREGULATED D.C. SIGNAL; A REGULATING ELEMENT; A SENSING RESISTOR IN SERIES WITH THE LOAD; MEANS INCLUDING SAID REGULATING ELEMENT AND SAID SENSING RESISTOR AND CONNECTING SAID SOURCE TO SAID LOAD; MEANS INCLUDING A PLURALITY OF RESISTORS SERIALLY-CONNECTED ACROSS SAID LOAD TO RECEIVE A SIGNAL RELATED TO THE SIGNAL DELIVERED TO THE LOAD; FIRST FEEDBACK MEANS CONNECTED TO A NODE OF SAID SERIALLY-CONNECTED RESISTORS AND TO SAID REGULATING ELEMENT FOR CONTROLLING THE CONDUCTIVITY THEREOF IN RESPONSE TO SIGNAL AT SAID NODE; SECOND FEEDBACK MEANS CONNECTED TO SAID SENSING RESISTOR AND TO SAID REGULATING ELEMENT FOR CONTROLLING THE CONDUCTIVITY THEREOF WHEN THE VOLTAGE ACROSS SAID SENSING RESISTOR EXCEEDS A PREDETERMINED VALUE; AND CIRCUIT MEANS CONNECTED TO SAID SENSING RESISTOR AND TO SAID NODE FOR SUPPLYING CURRENT THERETO WHEN THE VOLTAGE ACROSS SAID SENSING RESISTOR EXCEEDS SAID PREDETERMINED VALUE.
References Cited (Backward Citations)
US3023355A
Cited
US2967991A
Cited
US3005147A
Cited
US2904742A
Cited
US3040238A
Cited
US2888633A
Cited
US2992382A
Cited
US2974270A
Cited
US3109980A
Cited
US3078410A
Cited
US3158801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |