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:
Sep. 05, 2000
Filed:
Apr. 24, 1997
Lester John Erlston, Portland, OR (US);
Other;
Abstract
A screw action disc brake comprises a disc centered on the wheel hub so that torque steer forces are not generated under braking; and a brake pad mounted on a collar which can be moved toward the disc to apply the brake, and away from the disc to release the brake; the collar in the form of a disc with a central circular hole, for clearing the axle mounting section of the hub, and an internally screw-threaded perpendicular perimeter lip. A circular cradle is fixed onto the axle by splines of screw-threads at its center, in such a manner that it cannot rotate about the axle, the cradle having a perimeter flange which is externally screw-threaded to mesh with the screw threads on the inside of the collar lip. The screw-threads are arranged so that when the collar is rotated on the cradle, by pulling a brake cable, in the opposite direction to that of the forward turning hub, the collar moves towards the brake disc.