The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 1993
Filed:
Jan. 03, 1992
Randall J Krohn, Ballwin, MO (US);
Denis Y Yerlikaya, Des Peres, MO (US);
Sherwood Medical Company, St. Louis, MO (US);
Abstract
A device having a rechargeable power source with an associated battery charger base having a quick charge current output and a trickle charge current output. A control circuit within the device is also provided that monitors if and for how long the device is attached to the base and determines the present capacity of the power source. Based on these signals, the control circuit selects an appropriate charge current output. The control circuit also includes timer circuits and circuits to measure the battery voltage during charging to allow for maximum but safe quick charging to protect the power source from long-term damage.