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:
Jun. 28, 1983
Filed:
Feb. 02, 1981
Alan F Meckstroth, Dayton, OH (US);
Other;
Abstract
A valve body defines an inlet and an outlet with a valve seat therebetween. A flexible diaphragm valve member has an outer portion supported by the valve body and a movable inner portion which cooperates with the valve seat to control the flow of liquid from the inlet to the outlet. A small bleed hole extends through the diaphragm valve member and provides a limited flow of liquid which is adapted to be vented to the outlet through a slightly larger vent passage defined by the valve body. In one embodiment, the vent passage is opened and closed by over-center snap movement of a flexible concaved bimetal disc positioned within the vent passage. The disc is heated by a small electric resistance coil when it is desired to open the valve, and when the coil is deenergized, the disc is cooled by the liquid flowing within the vent passage. In another embodiment, the vent passage is opened and closed by a flexible member in the form of a diaphragm disposed adjacent a metal disc forming an armature for a solenoid.