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:
Jul. 17, 1984
Filed:
Jan. 28, 1982
Masayoshi Katagiri, Toyota, JP;
Toshio Kondo, Okazaki, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Aichi, JP;
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Abstract
A device for warning the allowable wear-limit of a pad assembly in a disc brake. The device comprises (a) a vibration member composed of (i) a fixing portion secured to a lateral end portion of a backing plate of the pad assembly, (ii) a spring portion bent into a curve as an extension from the fixing portion for being located on the rear side of the pad assembly, and (iii) a vibrating portion extended from the spring portion, passing through between the lateral end portion of the backing plate and a torque member movably supporting the same, toward the friction surface of the disc rotor as far as almost reach at a tip thereof a wear limit of the pad assembly, (b) a supporting member supporting the vibrating portion at a root portion thereof against biasing force of the spring portion, and (c) a projection disposed on either the supporting member and the vibration portion for determining contact position therebetween. The vibrating portion produces the alarming sound according to natural frequency thereof which is determined by the length from the projection up to the tip of the vibrating portion.