Patent ID: 7059463

Claim:
A drive system for an imaging device of the type having a curved arm, comprising: a carrier that engages and supports the curved arm such that the curved arm can be moved along the carrier; a belt extending through said carrier and secured about the periphery of the curved arm; and a driving system comprising: a motor, a drive shaft rotatably driven by said motor, a drive pulley coupleable to said drive shaft through a clutch mechanism, wherein said clutch mechanism is manually operable, said pulley engaging said belt such that rotation of said drive pulley effects movement of said belt and in turn movement of the curved arm relative to said carrier, said clutch mechanism being movable between an engaged position, at which said drive shaft is coupled to said drive pulley such that actuation of said motor effects movement of said drive pulley and resultant movement of the curved arm relative to said carrier, and a disengaged position, at which said drive shaft is uncoupled from said drive pulley so that the curved arm can be manually moved relative to said carrier by an operator; and a clutch release mechanism for moving said clutch mechanism between its engaged and disengaged positions.