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:
Apr. 09, 1991
Filed:
Feb. 10, 1989
Applicant:
Inventor:
Enzo Brusasco, Torino, IT;
Assignee:
R.G.B. S.p.A., Turin, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74459 ; 7442 / ;
Abstract
A recirculating ball screw-nut screw coupling wherein the nut screw is defined by a cylindrical body having an internal helical groove for a number of balls located between the screw and nut screw, and two substantially radial holes each larger in diameter than the helical groove and each engaged by a plug having a hole facing the aforementioned groove; both plugs being connected integral with the opposite ends of a U-shaped fastener fitted on to the outside of the nut screw and having an internal recirculating channel connecting the holes in the plugs to each other, as well as externally via a radial loading hole.