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. 26, 1976
Filed:
Feb. 21, 1975
Alexander Goloff, East Peoria, IL (US);
George Butler Grim, Washington, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A variety of improved compression seals for rotary engines is disclosed. The rotary engine includes a housing having walls defining a combustion chamber, a rotor within the housing and having surfaces facing the housing walls, at least one compression seal having a side exposed to high pressure gases and carried by the rotor, the seal having a seal surface sealingly engaging and slidably contacting at least one of the housing walls. The improved seal is provided with a plurality of grooves each having a substantial dimension extending nonparallel to the direction of sliding contact of the seal surface with the wall it engages, with each groove terminating short of the side of the seal exposed to high pressure gases. The grooves assist in the building of a wear preventing oil film between the seal and the housing wall without establishing a leakage path for high pressure gases.