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:
Sep. 12, 2000
Filed:
Feb. 09, 1998
Benjamin Grill, Woodland Park, CO (US);
Sturman BG, LLC, Woodland Park, CO (US);
Abstract
A latching, dynamically balanced, fluid control valve. The valve includes a housing which has a supply port, a cylinder port and a return port. Fluid communication between the supply port and the cylinder port is controlled by a first valve that opens and closes a first valve port of the housing. Fluid communication between the supply port and the cylinder port is controlled by a second valve that opens and closes a second valve port. The first and second valves are connected to a transfer tube that is coupled to a solenoid and a return spring. The solenoid and spring are sealed by a pair of seals that each have an effective area which is approximately equal to the effective area of the valves. Each seal is located opposite from a valve seat so that opposing fluid pressures are applied to the seal and the valve. The opposing pressures create a net force on the transfer tube that is approximately zero, thus providing a balanced fluid valve that requires less energy to actuate.