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:
Aug. 19, 1980
Filed:
Jun. 27, 1978
Applicant:
Inventors:
Yasuyuki Morita, Hiroshima, JP;
Yasuhiko Iwamoto, Hiroshima, JP;
Assignee:
Toyo Kogyo Co., Ltd., Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C / ;
U.S. Cl.
CPC ...
418 84 ; 418 87 ; 418 94 ;
Abstract
Rotary piston engine includes a substantially triangular rotor formed with flank cooling oil passages located behind flanks of the rotor. The rotor further has coolant oil passages behind the oil seals at the opposite side surfaces thereof. The flank cooling oil passages are supplied with cooling oil only when the rotor temperature or engine speed is beyond a predetermined value, while the oil seal cooling passages are always supplied with cooling oil so that the rotor flanks can be maintained at a high temperature while preventing the oil seals from being excessively heated.