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. 05, 2021
Filed:
Apr. 27, 2018
Caterpillar Inc., Deerfield, IL (US);
Robert Charles Calderwood, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A valve system for metering fluid flow to an engine of a work machine is disclosed. The valve system may include a valve body which defines an annular inlet, an annular outlet, and a substantially spherical valve chamber therebetween to form a passageway. The valve system may have a spherical valve member with a fluid passage therethrough which is configured to rotate within the valve chamber to selectively meter fluid from the inlet to the outlet. The valve system may have a seat ring with a longitudinal bore with an elliptical cross-section and a sealing face hemispherically contoured to match the spherical valve member surface.