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:
Feb. 24, 2004
Filed:
Oct. 04, 2001
Applicant:
Inventors:
Willibald G. Berlinger, Peoria, IL (US);
William E. Moser, Peoria, IL (US);
Cornelius N. Opris, Peoria, IL (US);
Christopher G. Wark, Peoria, IL (US);
Leland W. Weiss, Peoria, IL (US);
Assignee:
Caterpillar Inc, Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 7/100 ;
U.S. Cl.
CPC ...
F02B 7/100 ;
Abstract
A piston assembly, particularly suitable for use in a free piston internal combustion engine, is provided with a piston including at least one oil coolant passage therein. The plunger shaft is substantially rigidly attached to the piston and axially extends from the piston. The plunger shaft includes at least one oil supply passage fluidly connected with at least one oil coolant passage.