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:
Dec. 08, 1987
Filed:
Apr. 01, 1987
John Houser, Jr, Pickens, SC (US);
The Singer Company, Stamford, CT (US);
Abstract
A latching arrangement is provided in a high speed battery charging circuit. The latching arrangement includes a momentary switch for momentarily changing a voltage level on a gate controlling capacitor for a gate controlled high current path and an inversion circuit between the capacitor and the gate, thus permitting a voltage provided by a thermostatically controlled switch to be applied to the capacitor for controlling the gate. The thermostatically controlled switch senses battery cell temperature and permits fast charging for temperatures below a threshold. The momentary switch is momentarily activated to initiate the fast charging operation. Upon sensing a temperature rise, the thermostatically controlled switch terminates fast charging and initiates trickle charging. When the battery cell cools and the thermostatically controlled switch again closes, the latching arrangement prevents resumption of a fast charge operation.