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US 4,987,360 AGranted
Self-contained rechargeable battery power source with voltage reducer
AssigneeBill's Ice Cream, Inc.
InventorWilliam J. Thompson
Life of this patent
Estimating the term…
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.
Claims1
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.
4 more elements
Dependencies are inferred from the claim text.