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:
Mar. 08, 1977
Filed:
Oct. 31, 1975
Applicant:
Inventors:
Paul J Staebler, Dunlap, IL (US);
Ziedonis I Krauja, East Peoria, IL (US);
Alexander Goloff, East Peoria, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F01C / ; F01C / ; F16J / ; F16J / ;
U.S. Cl.
CPC ...
418 51 ; 418142 ; 277 79 ; 277138 ; 277193 ;
Abstract
An improved internal combustion engine including a housing defining an operating chamber having a wall, an output shaft journalled in the housing and a piston operatively associated with the shaft and movable within the housing. The piston is provided with a seal receiving groove and the groove receives both a compression seal and an oil seal. In a preferred embodiment, the groove includes a step to define a relatively deep compression seal receiving portion and a relatively shallow oil seal receiving portion.