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. 18, 1977
Filed:
Apr. 08, 1976
Ervin E Mangus, Brimfield, IL (US);
Alexander Goloff, East Peoria, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
An internal combustion engine including a housing having interior walls defining an operating chamber, a piston mounted for movement within the chamber and carrying at least one seal for sealing against an interior wall, an output shaft associated with the piston and journalled in the housing, an exhaust port in one of the interior walls comprises of a series of openings extending through the wall into the chamber and spaced from one another by bridging elements forming part of the housing. Coolant passages are disposed at each of the bridging elements so that the same are cooled to maintain a good oil film at the exhaust port to minimize wear of the seal and to support the seal as it moves across the exhaust port.