US 7,320,386 B2 | ||
High friction brake shoe assembly | ||
Stanley F. Kulis, Jr., Cookeville, Tenn. (US); Craig R. Cook, Winchester, Va. (US); and David D. Muffley, Clear Spring, Md. (US) | ||
Assigned to Federal Mogul World Wide, Inc., Southfield, Mich. (US) | ||
Filed on Jan. 18, 2005, as Appl. No. 11/37,721. | ||
Application 11/037721 is a continuation in part of application No. 10/336080, filed on Jan. 03, 2003, granted, now 6,860,368. | ||
Prior Publication US 2005/0139439 A1, Jun. 30, 2005 | ||
Int. Cl. F16D 69/00 (2006.01); F16D 65/04 (2006.01) |
U.S. Cl. 188—250B [188/250 G] | 3 Claims |
1. A method of applying an emergency brake assembly that has never before been used, said method comprising the steps of:
rotating a rotating member having an engagement surface;
providing a non-rotating brake element having a rigid backing plate and a new friction material defining an outer surface,
the friction material not ever having been used in any service application;
providing a plurality of rigid, non-biased metallic projections extending directly from the backing plate and embedded within
the friction material, each of the embedded projections terminating in a tip proximate the outer surface of the friction material;
positioning the brake element adjacent the rotating member in a brake relaxed condition spaced from the engagement surface;
moving the brake element toward an initial brake applied condition with the outer surface of the friction material in pressing
contact with the engagement surface for the first time ever;
and generating friction simultaneously between the engagement surface of the rotating member and the combination of the tips
and the outer surface of the friction material when the brake element is moved to the brake applied condition for the first
time whereby both the friction material and the embedded projections contribute concurrently to friction generation upon the
first ever occurrence of contact of the tips and the outer surface of the friction material with the engagement surface of
the rotating member thereby enhancing initial braking effectiveness in the brake assembly.
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