US4137492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stored energy module
Assignee: MIDBRAKE Corp
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Filing: 1976-12-03
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Granted: 1979-01-30
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Expires: 1996-12-03
Abstract
Abstract A battery is connectable through a mechanical switch to bias a solid state switch and to charge a capacitor. When the mechanical switch is open, the capacitor supplies current to bias the solid state switch. The battery is connected for supplying a trickle electrical current to the capacitor when the mechanical switch is open for maintaining a charge on the capacitor for a substantial period of time without materially discharging the battery.
Inventors
- 👤 Forrest O. E. Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:27
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; B; B60; B60G; B60G17/00; B60G17/015; B60G17/018; H02; H02J; H02J9/00; H02J9/04; H02J9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A stored energy module including a battery, a switch, a capacitor and a transistor having a base, collector and emitter, said capacitor being series connected with said transistor for applying a forward bias from said base to said emitter, said battery being connected with said collector for applying a reverse bias from said collector to said base and for supplying current to a load only through said transistor from said collector to said emitter, said battery being connected through said switch between said capacitor and transistor for charging said capacitor and applying a forward bias from said base to said emitter when said switch is closed, said capacitor being connected to no other voltage source except said battery and being connected thereto only as aforesaid through said transistor or through said switch, and said battery being connected with the load only as aforesaid through said transistor.
Claim 2
Dependent Claim
146 words
A stored energy module including a battery, a switch, a capacitor and a transistor having a base, collector and emitter, said capacitor being series connected with said transistor for applying a forward bias from said base to said emitter, said battery being connected with said collector for applying a reverse bias from said collector to said base and for supplying current to a load only through said transistor from said collector to said emitter, said battery being connected through said switch between said capacitor and transistor for charging said capacitor and applying a forward bias from said base to said emitter when said switch is closed, said capacitor being connected to no other voltage source except said battery and being connected thereto only as aforesaid through said transistor or through said switch, and said battery being connected with the load only as aforesaid through said transistor.
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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |