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:
May. 29, 2001
Filed:
Aug. 25, 1999
Applicant:
Inventors:
Mark P. Brown, Florence, SC (US);
David A. Sepesi, Whitmore Lake, MI (US);
Assignee:
Thompson Saginaw Ball Screw Company, LLC., Saginaw, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F16H 2/522 ;
U.S. Cl.
CPC ...
F16H 2/522 ;
Abstract
A ball screw and nut linear actuator has a screw and nut with helical grooves and threads providing a helical raceway between them. The raceway has a ball return portion and provides a track for a train of recirculating load bearing balls. A wiper member carried by the nut has a helical wiper thread which is preloaded to engage an outer side of the helical groove of the screw outboard of the nut. The helical wiper thread has a radially open helical groove for maintaining and distributing a helical ribbon of lubricant on the side of the screw groove upon which it is pressed.