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:
May. 22, 2001
Filed:
Feb. 07, 2000
Benjamin Grill, Woodland Park, CO (US);
Sturman BG, LLC, Woodland Park, CO (US);
Abstract
A fluid control valve housing has first and second connection ports, and first and second valve ports. First and second valves, adjacent to the valve ports, are attached to a transfer tube that extends through the housing. A spring outwardly biases the valves. A solenoid moves the transfer tube to close the first valve port and open the second valve port. A return spring moves the transfer tube to close the second valve port and open the first valve port, allowing fluid communication between the first and second connection ports. A first seal, having an effective area approximately equal to the area of the first valve port, is attached to the transfer tube to seal the return spring. A second seal, having an effective area approximately equal to the area of the second valve port, is attached to the transfer tube to seal the solenoid.