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:
Apr. 13, 1982
Filed:
Oct. 17, 1980
Kenneth F Golan, Pekin, IL (US);
Charles N Goloff, Secor, IL (US);
James L Schmitt, Metamora, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A selector valve (10) for providing a plurality of fluid signals has a plurality of signal ports (17-22) and a pair of drain ports (23,24) opening into a bore (14) of a body (11) and are angularly spaced one from another in a plane normal to the axis of the bore (14). A spool (12) is reciprocatable within the bore (14) between a plurality of positions. At each position at least one of a plurality of radial passages (48-57) in the spool (12) communicates an inlet passage (25) with a manifold (41), another of the radial passages communicates the manifold (41) with one of the signal ports (17-22) and one or more of a plurality of arcuate pockets (60-68) in the spool (12) communicate the other signal ports (17-22) with the drain ports (23,24). By angularly spacing the signal ports (17-22) and positioning the radial passages (48-57) in the spool (12 ) for selective communication with the signal ports (17-22) at the various positions on the spool (12), a plurality of signals can be obtained with a relatively short travel distance of the spool (12).