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:
Aug. 16, 1983
Filed:
Nov. 05, 1981
James H Galloway, New Baltimore, MI (US);
Energy Development Associates, Inc., Madison Heights, MI (US);
Abstract
In a system for controlling the flow rates in a storage battery of the type having at least one pump driven at a controlled speed by a motor driven at a speed determined by the average applied voltage and the load experienced by the pump, which system includes a circuit for applying an average voltage to the motor and means for generating a reference signal for controlling the general magnitude of the average applied voltage to drive the pump at the desired speed, there is provided an improvement. This improvement comprises means for supplying a main voltage level of a given magnitude, means for alternately switching the main voltage level across the pump driving motor wherein the switching means has a first condition with the voltage level applied across the motor and a second condition with the voltage level isolated from the motor, and signal generating means normally responsive to a voltage control signal controlled at least in part by the reference signal for creating a signal to change the relative time the switching means is in the first condition compared to the time the switching means is in the second condition.