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. 17, 1990
Filed:
Jun. 07, 1988
Hiroshi Ikegami, Saitama, JP;
Akebono Brake Industry Co., Ltd., Tokyo, JP;
Abstract
An automatic gap control apparatus for a disc brake with a parking brake comprises a cup-shaped piston having a bottom, the piston is slidably mounted inside the brake operating cylinder, a rod having a through hole slidably fitted inside the body, which is prevented from rotating and provided with a one-way reversible thread, a sleeve nut having a concave portion at an end thereof, which is provided at a front end thereof an abutting portion abutting against the bottom of the piston and threadably engaged with the one-way reversible thread of the rod thereby forming a length adjusting mechanism, a small piston having a large diameter head, which is fitted in the through hole of the rod, and the large diameter head is fitted in the concave portion of the sleeve nut, and a spring member provided between the cup-shaped piston and the sleeve nut, which urges the sleeve nut. When the fluid pressure applied to the brake operating cylinder exceeds a predetermined value, the fluid pressure urges the large diameter head to bend the coil spring thereby preventing the sleeve nut from rotating relative to the rod.