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:
Nov. 14, 1989
Filed:
May. 17, 1988
Applicant:
Inventor:
Ayzik Grach, Creve Coeur, MO (US);
Assignee:
McNeil (Ohio) Corporation, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ; F01L / ; F01B / ;
U.S. Cl.
CPC ...
91224 ; 91229 ; 91235 ; 91321 ; 91346 ; 9141 / ; 91422 ; 251 75 ;
Abstract
This invention relates to an air motor having a snap-acting overcentering spring mechanism for snapping the valving of the air motor between first and second positions as the piston completes each stroke in the cylinder to ensure reliable stall-free operation of the motor.