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:
Jun. 18, 2002
Filed:
Aug. 01, 2000
Leonard J. Jabcon, Kalamazoo, MI (US);
Humphrey Products Company, Kalamazoo, MI (US);
Abstract
An electrically-operated three-way plunger-type solenoid valve assembly includes a housing, a valve seat insert provided in the housing, an electromagnetic actuator, and an exhaust port body, which extends into a sleeve passage of the electromagnetic actuator. A non-magnetic member is positioned in the sleeve passage of the electromagnetic actuator and includes an orifice in communication with an exhaust passage of the exhaust port body. A plunger is positioned in the non-magnetic member and supported for reciprocal axial movement in the non-magnetic member. A biasing member is provided which applies a spring force to the plunger, with the electromagnetic actuator generating a magnetic field having sufficient magnitude to move the plunger against the force of the biasing member. In this manner, the electromagnetic actuator selectively moves the plunger to control the communication between inlet and outlet openings of the valve to open and closed the valve. The non-magnetic member provides a magnetic gap between the plunger and the electromagnetic actuator and the exhaust port body to magnetically isolate the plunger from any residual magnetic field remaining in the electromagnetic actuator and the exhaust port body after the electromagnetic actuator is de-energized thereby reducing the required force of the biasing member and, further, forming a quick response valve.