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. 01, 2005
Filed:
Jun. 17, 2003
Gabe Fasolino, Tacoma, WA (US);
Alan K. Forsythe, Kent, WA (US);
John M. Morris, Auburn, WA (US);
GT Development, Seattle, WA (US);
Abstract
A first normally open solenoid valve 'A' is connected to passageway (). A second normally open solenoid valve 'B' is connected to a passageway (). A latching valve () includes a valve spool chamber () and a valve spool () within the chamber. An air-delivery conduit () delivers pressurized air to both a first passageway () and a second passageway (). Passageway () is connected to one end of the valve spool chamber (). Passageway () is connected to the opposite end of the valve spool chamber (). The valve spool () has two positions. In the first position, passageway () is connected with a passageway () that extends to an air-operated device (). Flow through the valve () to and from passageway () is blocked. In the second position, flow from passageway () to passageway () is blocked. Also, flow through the valve () to and from passageway () is blocked. Air in the air-operated device is vented through passageway (), the path (), valve spool groove () and passageway () to a vent avenue ().