Patent US3255398A successfully refreshed from Google Patents.
US3255398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Standby battery network
Assignee: Specialties Development Corp
•
Filing: 1963-03-11
•
Granted: 1966-06-07
•
Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Bagno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:06
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/10; H02; H02J; H02J7/00; H02J7/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
A STANDBY BATTERY NETWORK COMPRISING IN COMBINATION A MAIN SOURCE OF DIRECT ELECTRICAL POWER SUBJECT TO VOLTAGE FLUCTUATIONS AND HAVING FIRST AND SECOND TERMINALS, A TRANSISTOR HAVING AN EMITTER ELECTRODE CONNECTED TO SAID FIRST TERMINAL AND HAVING A COLLECTOR ELECTRODE AND A BASE ELECTRODE, A LOAD DEVICE CONNECTED BETWEEN SAID EMITTER AND SAID FIRST TERMINAL, A BATTERY CONNECTED BETWEEN SAID BASE ELECTRODE AND SAID FIRST TERMINAL, AND ELECTRICAL SWITCH MEANS FOR PROVIDING A CONSTANT CHARGING CURRENT THROUGH SAID BATTERY WHEN THE COLLECTOR CURRENT OF SAID TRANSISTOR IS CONSTANT AND FOR INTERRUPTING SAID CHARGING CURRENT WHEN SAID COLLECT CURRENT IS INTERRUPTED, SAID SWITCH MEANS HAVING A CONTROLLING CIRCUIT CONNECTED BETWEEN SAID COLLECTOR AND SAID SECOND TERMINAL AND A CONTROLLED CIRCUIT CONNECTED BETWEEN SAID BASE AND SAID SECOND SECOND TERMINAL TO PROVIDE A BATTERY CHARGING CURRENT PATH BETWEEN TERMINALS THROUGH SAID BATTERY, SAID TRANSISTOR AND SAID BATTERY BEING CONNECTED SO THAT BATTERY MAINTAINS SAID BASE AND EMITTER ELECTRODES AT CONSTANT POTENTIALS WITH RESPECT TO SAID FIRST TERMINAL SO THAT THE EMITTER CURRENT IS HELD CONSTANT TO MAINTAIN A CONSTANT VOLTAGE ACROSS SAID LOAD AND TO PRODUCE A CONSTANT COLLECTOR CURRENT.
Claim 2
Dependent Claim
188 words
A STANDBY BATTERY NETWORK COMPRISING IN COMBINATION A MAIN SOURCE OF DIRECT ELECTRICAL POWER SUBJECT TO VOLTAGE FLUCTUATIONS AND HAVING FIRST AND SECOND TERMINALS, A TRANSISTOR HAVING AN EMITTER ELECTRODE CONNECTED TO SAID FIRST TERMINAL AND HAVING A COLLECTOR ELECTRODE AND A BASE ELECTRODE, A LOAD DEVICE CONNECTED BETWEEN SAID EMITTER AND SAID FIRST TERMINAL, A BATTERY CONNECTED BETWEEN SAID BASE ELECTRODE AND SAID FIRST TERMINAL, AND ELECTRICAL SWITCH MEANS FOR PROVIDING A CONSTANT CHARGING CURRENT THROUGH SAID BATTERY WHEN THE COLLECTOR CURRENT OF SAID TRANSISTOR IS CONSTANT AND FOR INTERRUPTING SAID CHARGING CURRENT WHEN SAID COLLECT CURRENT IS INTERRUPTED, SAID SWITCH MEANS HAVING A CONTROLLING CIRCUIT CONNECTED BETWEEN SAID COLLECTOR AND SAID SECOND TERMINAL AND A CONTROLLED CIRCUIT CONNECTED BETWEEN SAID BASE AND SAID SECOND SECOND TERMINAL TO PROVIDE A BATTERY CHARGING CURRENT PATH BETWEEN TERMINALS THROUGH SAID BATTERY, SAID TRANSISTOR AND SAID BATTERY BEING CONNECTED SO THAT BATTERY MAINTAINS SAID BASE AND EMITTER ELECTRODES AT CONSTANT POTENTIALS WITH RESPECT TO SAID FIRST TERMINAL SO THAT THE EMITTER CURRENT IS HELD CONSTANT TO MAINTAIN A CONSTANT VOLTAGE ACROSS SAID LOAD AND TO PRODUCE A CONSTANT COLLECTOR CURRENT.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |