Patent ID: 8038282

Claim:
A drive train for a UV module, comprising: a motor; a worm shaft rotated when said motor is actuated; a pair of shutter shafts oppositely rotated by the worm shaft; a pair of shutter arms, one of said shutter arms rotatably attached to each of said shutter shafts, a pair of drive pins, each of said drive pins axially extending from one of said shutter arms; each of said drive pins having a longitudinal axis and comprising a shank terminating in a head with respective shank and head diameters, said shank diameter less than said head diameter; and a pair of shutter end caps, each of said shutter end caps comprising an axial slot with a longitudinal axis and accommodating axial displacement of one of said drive pins, rotation of said drive pin, and tilting of said drive pin relative to said longitudinal axis of said axial slot, said head of said drive pin contacting said end cap within said slot without said shank contacting said end cap within said slot when either of said drive pins is displaced, rotated, or tilted, said shutter end caps rotated by said drive pins.