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:
Mar. 20, 2001
Filed:
Nov. 13, 1998
Theodore R. Schlenker, Troy, MI (US);
Beaver Aerospace & Defense, Inc., Livonia, MI (US);
Abstract
An axial displacement arrangement in the form of a ball screw and nut achieves a highly compact configuration by effecting ball recirculation entirely within the ball screw shaft. The ball recirculation portion of the ball screw shaft is axially short with respect to an elongated driven nut. As the nut is rotated, illustratively by an electric motor coupled thereto, the ball screw shaft is displaced axially along an axial support member. The axial support member has radially outward extending splines, and the ball recirculation portion of the ball screw shaft has radially inward extending splines, the inward and outward splines being arranged to face one another whereby a linear ball bearing region is formed. The linear ball bearing permits the ball recirculation arrangement and its associated actuation element to be displaced axially along the support element, but is precluded from rotating. A segmented ball recirculation end cap arrangement prevents the linear ball bearings from escaping axially from between the ball groove spline arrangement and the axial support element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile