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. 08, 2020
Filed:
Aug. 19, 2019
Applicant:
Caterpillar Inc., Deerfield, IL (US);
Inventors:
Ashwin A. Hattiangadi, Edwards, IL (US);
Paul David Smallidge, West Lafayette, IN (US);
Rong Qu, Dunlap, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 3/20 (2006.01); F16K 1/42 (2006.01); F01L 3/06 (2006.01); F01L 3/22 (2006.01);
U.S. Cl.
CPC ...
F01L 3/20 (2013.01); F01L 3/06 (2013.01); F01L 3/22 (2013.01); F16K 1/42 (2013.01);
Abstract
A valve seat insert of an engine has a valve seating surface including an outer curved segment forming a first wear crown for contacting the valve at an early wear state, an inner curved segment forming a second wear crown for contacting the valve at a later wear state, and a linear segment extending between the outer and the inner curved segments. A top flow crown is set off radially inward from the engine head, and a sloping segment extending from the top flow crown is oriented at an acute angle relative to the valve seat center axis.