Brake shoe mounting system for a vehicle brake assembly

A vehicle drum-in-hat disc brake assembly having a disc service brake and a drum-in-hat parking and emergency brake, the drum-in-hat disc brake assembly comprising:

• a drum-in-hat adapter adapted to be secured to a fixed, non-rotatable component of the vehicle, said adapter including an abutment having a pair of opposed slots formed therein, each of said slots including a pair of opposed side surfaces and an end surface, said adapter adapted to support the disc service brake portion of the drum-in-hat disc brake assembly;
• and
• a backing plate secured to said adapter and adapted to support a drum brake shoe assembly of the drum-in-hat parking and emergency brake portion of the drum-in-hat disc brake assembly, said drum brake shoe assembly including a pair of brake shoes, each of said brake shoes including a first end, an opposite second end, a web portion, a rim portion secured to an outer surface of said web portion, a friction pad secured to an outer surface of said rim portion, and only two shoe slides provided on at least one side of said rim portion, one of said two shoe slides provided near said first end of said brake shoe and the other of said two shoe slides provided generally intermediate said first and second ends of said brake shoe;
• wherein said rim portion near said second end of said brake shoe defines a shoe rim abutment end, said shoe rim abutment end disposed in said slot of said abutment and in contact with at least one of said opposed side surfaces and said end surface of said slot of said abutment to thereby define a third shoe slide of said brake shoe.

A vehicle drum-in-hat disc brake assembly having a disc service brake and a drum-in-hat parking and emergency brake, the drum-in-hat disc brake assembly comprising:

• a drum-in-hat adapter adapted to be secured to a fixed, non-rotatable component of the vehicle, said adapter including an integrally cast abutment having a pair of opposed slots formed therein, each of said slots including a pair of opposed side surfaces and an end surface, said adapter adapted to support the disc service brake portion of the drum-in-hat disc brake assembly;
• and
• a backing plate secured to said adapter and adapted to support a drum brake shoe assembly of the drum-in-hat parking and emergency brake portion of the drum-in-hat disc brake assembly, said drum brake shoe assembly including a pair of brake shoes, each of said brake shoes including a first end, an opposite second end, a web portion, a rim portion secured to an outer surface of said web portion, a friction pad secured to an outer surface of said rim portion, and only two shoe slides provided on at least one side of said rim portion, one of said two shoe slides provided near said first end of said brake shoe and the other of said two shoe slides provided generally intermediate said first and second ends of said brake shoe;
• wherein said rim portion near said second end of said brake shoe defines a generally T-shaped shoe rim abutment end, said shoe rim abutment end disposed in said slot of said abutment and in contact with at least one of said opposed side surfaces and said end surface of said slot of said abutment to thereby define a third shoe slide of said brake shoe.