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:
Apr. 18, 1978
Filed:
Oct. 07, 1976
John K Amdall, Peoria, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A rotary mechanism including a housing having a chamber including a wall having at least one lobe having a sharp transition point thereon, a multi-nosed rotor within the chamber, a shaft having an eccentric journalling the rotor and journalled within the housing, one of the wall and the rotor periphery being generated by the clearance envelope of the other of the wall and the rotary periphery upon relative rotation of the two. The wall, in the vicinity of the lobe, is defined by a continuous curve substantially encompassing the sharp transition point. The periphery of the rotor is relieved in areas between each nose sufficiently to prevent interference between the wall and the rotor upon rotation of the rotor within the chamber.