Rockwell International Corporation

Meritor Heavy Vehicle Systems Limited

Donald G Walker

David J Edwards

David J Dettloff

Roger Gooch

An improved camshaft sealing arrangement includes seals at each end of the camshaft housing. In addition, seals and washers are positioned between the camshaft and the slack adjuster connection. The combined seals provide a camshaft that is less likely to require maintenance than prior art camshafts. The seal adjacent the cam contacts an outer periphery of the camshaft housing. This seal also provides a thrust bearing washer surface against the camshaft. The seals between the camshaft and the slack adjuster include washers to properly secure and position the seals, the camshaft and the slack adjuster.

Sealing arrangement for brake camshaft

A brake lining wear indicator is attached to a drum brake shoe backing plate adjacent the brake lining. The indicator provides a visual gage dimension that assists in the determination of when the brake linings should be replaced. This determination can be made in a very short period of time without requiring a physical measurement of the thickness of the brake lining on each brake shoe.

Lining wear indicator for a drum brake

An improved bracket member for a vehicle brake system is disclosed. The bracket member has a wing bracket at one end for mounting of a brake actuating mechanism and a mounting plate at the opposite end for connection to the spider of the brake assembly. A hollow tubular member is positioned between the wing bracket and mounting plate and securely affixed to each of them, such as by welding. The tubular member can be of any length depending on the vehicle and applicable clearance space. The mounting plate is secured such as by fasteners to the brake assembly. Also, the tubular member protrudes through the mounting plate and is adapted to be separately securely connected to the brake assembly. The end of the tubular member can be securely attached to an opening in the brake assembly in a number of ways, such as by an interference fit, press fit, wedge fit, compression fit in combination with a spanner nut, pinch joint or the like. The end of the tubular member can also be knurled or splined. In another embodiment, the end of the tubular member can be welded to the brake assembly spider.

Brake bracket assembly

A brake support assembly for a vehicle including a stamped metal spider having a planar mounting portion and a pair of diametrically opposed support portions. A first support portion includes a first pair of ribs extending along opposite edges thereof as involuted ribs. A second support portion includes a second pair of ribs extending along opposite edges thereof to form flanges. A bracket extends across and connects the first pair of ribs. The bracket and the first support portion of the spider include laterally spaced apertures which receive press fit sleeve-type bushings. Anchor pins disposed in said sleeve-type bushings carry one end of a pair of brake shoes each comprised of a pair of spaced generally parallel webs secured to a table. The opposite end of the brake shoes is supported by cam follower rollers. Springs bias the brake shoes into contact with a cam actuator which may be rotated to displace the brake shoes. In the preferred embodiment of the present invention, the first pair of reinforcing ribs is terminated at a transition section extending from the planar first support portion as a rib of decreasing length to a total transition. The second pair of reinforcing ribs includes a termination section extending from the second support portion to the mounting portion as a flange having an orthogonally extending portion of decreasing length such that the termination section is completed when the radially extending portion of the flanges is coplanar to the plane of the mounting portion.

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Troy, MI, United States of America

Donald G Walker