Friction interface unit for a clutch and a brake

Claim 1

A friction interface unit for use with a clutch, a brake or a clutch-brake, comprising: (a) a hub adapted to receive a shaft, (b) said hub having an annular friction flange extending radially therefrom; (c) a first housing portion including a cylindrical hollow base portion, (d) bearing means interposed between and in radial alignment with said hub and said hollow base portion of said first housing portion, (e) said hollow base portion having means for mounting a sheave thereon in radial alignment with said hub and said bearing means with the unit as a clutch or a clutch-brake or for mounting on an anchor mount with the unit as a brake, (f) said hollow base portion terminating in a radially extended annular wall, (g) means for mounting a ring disc on said annular wall adapted for engagement of the ring by a caliper brake, (h) a second housing portion having a central circular portion terminating at a portion of its periphery in (i) an annular flange portion, (j) means for securing the second housing portion to the first housing portion thereby forming a full housing for the unit, (k) an annular piston, (l) means mounting said piston on said circular portion to form a cylinder, (m) a friction ring mounted on said piston opposite to and for engagement with said annular friction flange, (n) said second housing portion having a series of spaced torque pins carried thereby and slideably mounted in said annular piston, (o) said central circular portion having means mounted thereon and in communication with said cylinder for introducing fluid pressure into said cylinder to thereby activate said piston to cause said friction facing thereon to engage said annular friction flange.