US4987360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-contained rechargeable battery power source with voltage reducer
Assignee: BILL'S ICE CREAM Inc A CORP OF MAINE
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Filing: 1988-12-27
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Granted: 1991-01-22
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Expires: 2008-12-27
Abstract
Abstract A portable, self-contained, rechargeable battery power source provides a plurality of voltage levels to a load circuit, thus allowing one source to replace the need for many batteries. The battery is a high-capacity unit of the type used in camcorders and enables increased playing time for each battery period of charge.
Inventors
- 👤 William J. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:06
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/855; G; G05; G05F; G05F3/00; G05F3/02; G05F3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A self-contained portable, rechargeable, battery unit power source for powering consumer products, comprising: a high-capacity, rechargeable battery unit, a voltage selection system for selecting one of a plurality of voltages from said battery, a load circuitry, means for connecting said load circuitry to said selection system, said voltage selection system having means for connecting the battery to a charge circuitry, including a multi-position switch for providing a plurality of "pick off" voltages from the rechargeable battery for use by the load, and a switch in series with the multi-position switch for connecting, in a first operating mode, the selected voltage to the load, for connecting, in a second operating mode, the rechargeable battery to a charging circuitry, and for disconnecting, in a third operating mode, the battery from both the charging circuitry and the load to prevent unnecessary loss of battery capacity.
Claim 2
Dependent Claim
142 words
A self-contained portable, rechargeable, battery unit power source for powering consumer products, comprising: a high-capacity, rechargeable battery unit, a voltage selection system for selecting one of a plurality of voltages from said battery, a load circuitry, means for connecting said load circuitry to said selection system, said voltage selection system having means for connecting the battery to a charge circuitry, including a multi-position switch for providing a plurality of "pick off" voltages from the rechargeable battery for use by the load, and a switch in series with the multi-position switch for connecting, in a first operating mode, the selected voltage to the load, for connecting, in a second operating mode, the rechargeable battery to a charging circuitry, and for disconnecting, in a third operating mode, the battery from both the charging circuitry and the load to prevent unnecessary loss of battery capacity.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-21 | 1994-07-23 | 1995-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-21 | 1998-07-23 | 1999-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-21 | 2002-07-23 | 2003-01-22 | $7700.00 | Window Closed / Lapsed |