Ice breaking and mud deflecting device for a ball screw and nut assembly
AssigneeWarner Electric Brake & Clutch Company
InventorsHelmut Ploss, Alfons Remensperger
Life of this patent
Estimating the term…
Abstract
A ring is telescoped into the end of a nut of a ball screw and nut assembly and carries a lip which breaks ice away from the screw. The plastic insert of relatively short circumferential length is supported by the ring and is urged into the groove of the screw by a spring so as to wipe mud from the screw. A felt strip coacts with the insert to seal the nut against the entry of foreign particles and to restrict the escape of lubricant from the nut.
Claims7
An ice breaking and mud deflecting device for a ball screw and nut assembly having a nut and a screw each formed with a helical ball groove, said device comprising a ring adapted to fit non-rotatably into one end portion of said nut, a stripper extending helically around the inside of said ring at a lead angle corresponding to the lead angle of the ball groove of said screw, said device being characterized in that said stripper is formed by a flexible strip secured to said ring and positioned to fit within the ball groove of said screw, said strip having one end located adjacent the outboard edge of said ring, said stripper further comprising an insert formed separately from said strip and made of substantially inelastic material, said insert being located adjacent said one end of said strip and extending over a considerably shorter circumferential angle than said strip, and resiliently yieldable means acting on said insert and urging the latter radially inwardly into the ball groove of said screw.
Dependencies are inferred from the claim text.