Patent ID: 7209176

Claim:
A camera head comprising: a first frame; a first arm rotatably attached to the first frame; a first motor for rotating the first arm relative to the first frame, with the first motor enclosed within a sealed first housing; a second frame attached to the first arm; a second arm rotatably attached to the second frame; a second motor for rotating the second arm relative to the second frame, with the second motor enclosed within a sealed second housing; a first shaft rotatably supported within the first housing, with the second frame attached to the first shaft, and the first shaft sealed against the first housing, a first gear linked to the first shaft through a first clutch, and with the first gear linked to the first motor, and one or more clutch drive pins sealed against the first housing, and moveable from a first position, wherein the first motor drives the first shaft through the first clutch, to a second position, wherein the first shaft can rotate free of the motor.