Multiple disc brake

Claim 1

A brake for a vehicle wheel mounted for rotation on an axle comprising: an annular adapter secured to the hub of said wheel, said adapter having an axially extending cylindrical section including a plurality of circumferentially spaced, axially extending ways, a pair of annular rotors, each rotor having a plurality of grooves receiving said ways to provide a rotary driving connection to said wheel while permitting axial movement of said rotors, each of said rotors having a first radially extending surface axially spaced from a first radially extending surface of the other said rotor and at least one of said rotors being axially movable toward the other said rotor, a support fixed to said axle, actuating means including axially movable force transmitting means disposed adjacent a second radially extending surface of one of said rotors, a housing supporting said actuating means and mounted for axial movement relative to said support, said housing extending over the radially outer periphery of said rotors and having a leg extending radially inward adjacent a second radially extending surface of the other one of said rotors, first axially movable friction pad means disposed between said force transmitting means and said second radially extending surface of said one rotor, second axially movable friction pad means disposed between said housing leg and said second radially extending surface of said other one rotor, third friction pad means disposed between said first radially extending surfaces of each of said rotors, said first, second and third friction pad means being substantially in axial alignment, means preventing rotation of said friction pad means, and reaction abutment means between said actuating means and said housing whereby actuation of said actuating means will move said first friction pad into contact with said one rotor causing said reaction abutment means to move said housing and said radially extending leg to move said second friction pad into contact with said other one rotor and said first and second friction pads will move at least one of said rotors to effect friction contact between both of said rotors and said third friction pad.