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:
Jan. 28, 1986
Filed:
Nov. 12, 1981
James A Neff, Bloomfield Township, Oakland County, MI (US);
MAC Valves, Inc., Wixom, MI (US);
Abstract
A four-way directional flow control air valve having a valve spool movable to a first position. A solenoid has a pole piece seated against the valve body adjacent one end of the valve spool. An end of the valve spool is seated against the solenoid pole piece when the valve spool is in the first position. A pusher rod on the valve spool extends through a bore in the pole piece into engagement with a solenoid armature, whereby when the solenoid is energized, the armature moves the pusher rod and the valve spool from the first position to a second position a distance equal to the difference in length between the pole piece and the pusher rod. The valve spool can be moved back alternatively by a return spring or a second solenoid engageable with the other end of the valve spool in the same manner as the first solenoid moves the valve spool to the second position.