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:
Mar. 16, 1982
Filed:
Jun. 17, 1980
Leo Hoogenboom, Ballston Lake, NY (US);
Mechanical Technology Incorporated, Latham, NY (US);
Abstract
A fluid pressure regulator valve comprising a base member designed to be secured in a fluid conduit in a position to stop all fluid flow through the conduit with the regulator valve in a fully closed position. The base member has an orifice formed through it which is sized to determine the maximum fluid flow rate through the regulator valve with the valve in a fully open position. An elongated helically coiled spring member is secured to the base member and is designed so that its coils are compressed into engagement with each other so as to enclose the sides of the spring member in a fluid tight manner. The helically coiled spring member has a central open passageway with one end closed in a fluid-tight manner and the other open end secured over the orifice through the base member. A magnetically permeable armature is secured to the closed end of the helically coiled spring. An electromagnet is positioned adjacent the armature for producing lines of magnetic flux which thread the armature and cause it to flex the helically coiled spring so as to open spaces between the compressed coils comprising the enclosed sides of the spring and allow fluid flow through the regulator valve upon excitation current being supplied to the electromagnet. Pressure regulation is obtained by sensing the voltage required to open the valve. Comparison of the valve opening voltage to a reference voltage results in a change of the on-time versus off-time of the valve, if the two voltages are not within a specified interval of each other. The valve is intended for a wide flow control range and for digital operation.