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:
Jul. 25, 1978
Filed:
Mar. 29, 1977
Applicant:
Inventor:
Kazuo Kato, Toyota, JP;
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C / ; F04C / ; F04C / ;
U.S. Cl.
CPC ...
418142 ;
Abstract
An oil seal means in a rotary piston engine including first and second assemblies of oil seal rings, annular spring means and annular elastic seal elements mounted in annular oil seal grooves, arranged concentric and close to each other with an annular land interposed therebetween, said annular land being a flexible annular land movable in any radially directions of the rotor.