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:
Dec. 11, 1979
Filed:
Feb. 22, 1978
Applicant:
Inventor:
Hubert E Klinkenberg, Rochester, MI (US);
Assignee:
Beaver Precision Products, Inc., Beloit, WI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
7442 / ; 74441 ; 74459 ;
Abstract
A ball screw and nut mechanism in which a preloaded train of balls travels through a closed circuit having an active portion and an inactive or return portion. The active portion is formed by convolutions of opposed helical grooves in the screw and the nut and a return tube on the nut defines the inactive portion. Inclined surfaces are formed on the lands between adjacent convolutions of the groove on the screw and partially unload the balls as the latter enter and leave the active portion of the circuit to prevent the balls from keystoning.