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:
Oct. 22, 2002
Filed:
Dec. 20, 2001
Applicant:
Inventor:
Charles H. Dutart, Washington, IL (US);
Assignee:
Caterpillar Inc, Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 3/712 ;
U.S. Cl.
CPC ...
F02B 3/712 ;
Abstract
A wastegate valve for a turbocharger system in an engine of a work machine, vehicle or the like particularly suitable for operation at changing altitudes. The wastegate valve includes a spring operating against an adjustable spring seat. The adjustable spring seat is adjusted in response to ambient pressure changes to alter the installed length of the spring.