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:
Feb. 03, 2004
Filed:
Jun. 25, 2001
Richard E. Schnell, Oswego, IL (US);
Ross Operating Valve Company, Troy, MI (US);
Abstract
A valve system ( ) that employs a piezo-electric element ( ) to activate a fluid flow valve ( ) so as to use a minimal amount of electrical energy. The piezo-electric element ( ) activates a pilot pressure valve ( ), which allows a control fluid to pass to a main control valve ( ). The control fluid causes the main control valve ( ) to activate a working element ( ), which in turn operates the fluid flow valve ( ). A switching assembly ( ) is employed to activate the piezo-electric element ( ). The switching assembly ( ) can include various types of switching devices, such as RF switching devices, optical switching devices, infrared switching devices and low voltage electrical switching devices.