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. 27, 2003
Filed:
Jun. 07, 2001
Applicant:
Inventors:
Ryan B. West, Saginaw, MI (US);
David A. Lange, Bay City, MI (US);
John E. Kinney, Saginaw, MI (US);
Assignee:
Thomson Saginaw Ball Screw Company, L.L.C., Saginaw, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F16C 1/700 ;
U.S. Cl.
CPC ...
F16C 1/700 ;
Abstract
A ball screw and nut linear actuator incorporates an axially extending screw and a nut received on the screw to provide a helical raceway with recirculating load bearing balls. An axially extending member carried by the nut on a surface of the nut radially outboard of the raceway has ball return passages opening to the screws groove extending axially to span different turns of the screw groove. The ports lead to the ball return passages and are supplied with a liquid lubricant by a distributor system.