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:
May. 07, 1985
Filed:
Jan. 20, 1984
Robert Spaargaren, Granger, IN (US);
Allied Corporation, Morristown, NJ (US);
Abstract
A duo-servo drum brake (10) includes an adjusting mechanism (40) for effecting brake shoe (18, 20) adjustment during application of the brake. The brake (10) includes a cable (42) connected to the anchor pin (28) and one of the brake shoes (20), and to an adjuster connector (46) attached at its end. The adjuster connector (46) contains an elongated slot (49) receiving therein an end (61) of an opposing force clutch spring (60) mounted upon the adjusting pivot nut (56) of an extendible strut (50). The adjuster connector (46) is connected to a resilient return spring (70) anchored to the one brake shoe (20). A second opposing force clutch spring (62) is secured at one end (63) to the one brake shoe (20) and is mounted about the adjusting pivot nut (56) in order to prevent retraction rotation of the nut (56). The first and second opposing force clutch springs (60, 62) effect unidirectional rotation of the adjusting pivot nut (56) to extend the strut (50) and prevent counter rotation of the pivot nut (56) when the brake (10) is deactivated.