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. 17, 1996
Filed:
Sep. 02, 1994
Sean O Harnett, Washington, MO (US);
Terry L Cornelison, Washington, MO (US);
Ronald E Chasteen, Washington, MO (US);
Echlin Inc., , US;
Abstract
A fluid flow control system which can function under a range of input pressures for regulating the flow of fluid as a function of a variable input voltage and having a feedback feature which produces an electrical signal equivalent to the volume of fluid actually flowing from the control system, comprising a pressure balanced valve, a proportional solenoid having a movable shaft responsive to the input voltage and adapted to open the valve, said valve including, a fluid intake chamber having an intake port and a valve port, a fluid discharge chamber having a discharge port, a valve disk and a cooperating valve seat where the valve disk is connected to the shaft of the proportional solenoid so as to open and close the valve, a flexible diaphragm having a centrally disposed piston in contact with the valve disk a pressure equalizing chamber contiguous to the diaphragm, a biasing spring in contact with the piston and exerting a force thereon in a direction toward the valve disk for normally maintaining the valve disk sealed against its valve seat, and a fluid flow measurement device disposed in the discharge port for measuring the fluid flowing from the fluid discharge chamber.