Selector switch mechanism with adjustable radial cam insert members having circumferential overlap flange

Claim 1

In a selector switch mechanism including a support carrying a shaft for rotation with respect thereto and at least one switch means mounted on the support having a shiftable part, switch actuating means for actuating the shiftable switch part disposed in radial alignment therewith comprising a disk-like circular cam member mounted on said shaft for rotation therewith and having a plurality of uniformly spaced apart reentrant recesses about its periphery, each of said recesses defining an arcuate surface extending axially of the disk and encompassing an included angle greater than one hundred eighty degrees, and a plurality of switch actuating elements seatable in said recesses, each element having a cylindrical surface portion conforming to the recesses and a switch-part engaging surface portion projecting radially beyond the disk outer surface into abutting engagement with said shiftable switch part, at least one of said recess and said element being resiliently deformable to permit snap-fitting insertion and removal of said elements radially of said recesses, at least some of said switch actuating elements having an integral circumferentially extending tapering projection having an arcuate outer surface bridging the space between adjacent recesses and overlying an adjacent element to provide a continuous switch actuating surface extending circumferentially of the disk.