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. 29, 2020
Filed:
May. 10, 2018
Graco Minnesota Inc., Minneapolis, MN (US);
Dustin A. Tichy, Otsego, MN (US);
Stephen L. Van Krevelen, East Bethel, MN (US);
Suresha Saragur Nijaguna, Plymouth, MN (US);
Graco Minnesota Inc., Minneapolis, MN (US);
Abstract
A changeover valve for a single line parallel lubrication system includes a base housing, a first housing, and a second housing, which are distinct and separable units arranged to provide direct fluid communication between base housing, first housing, and second housing fluid channels. The base housing includes a plurality of fluid channels. The first and second housings each include a spool mounted in a cylindrical bore and hydraulically displaceable between ends of the cylindrical bore and a plurality of fluid channels fluidly connected to the cylindrical bore. The first and second housings are configured to mate with the base housing in a fluid seal. At least one of the base housing, first housing, and second housing includes and a relief valve in fluid communication with one or more of the plurality of base housing, first housing, and second housing fluid channels.