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:
Jan. 17, 1989
Filed:
Dec. 03, 1987
Wilhelm Schneider, Steinsburgweg, DE;
Roland Keller, Leimen, DE;
Deutsche Perrot-Bremse GmbH, Mannheim, DE;
Abstract
An actuator for a hydraulically actuated caliper disc brake having a brake shoe comprises an actuating piston of two-part construction mounted for displacement in a cylinder and acted upon by a pressure fluid. The actuator has a cup-shaped member of cast steel, the bottom of which is acted upon by the pressure-fluid, and a cylindrical core of a mechanically resistant and heat insulating material removably coaxially and having an end face pressed against the brake shoe when actuated. A plurality of thin discs of mechanically resistant material are secured to the end face of the core adjacent to the brake shoe for reducing heat transfer from the brake shoe to the piston.