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. 13, 2004
Filed:
Jan. 30, 2002
Applicant:
Inventor:
John A. Grassi, Brimfield, IL (US);
Assignee:
Caterpillar Inc, Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 1/04 ;
U.S. Cl.
CPC ...
F16J 1/04 ;
Abstract
A piston includes a ring groove. The ring groove has a top face and a bottom face, and one of the top face and the bottom face is composed of a first material having a preestablished rate of thermal conductivity, the other of the top face and bottom face is composed of a second material having a preestablished rate of thermal conductivity being less than the rate of thermal conductivity of the first material.