Patent attributes
An adjustment mechanism comprises a dial comprising an inner wall defining a hole passing through the dial, the inner wall comprising a ledge having one or more cutouts. The mechanism further comprises a base comprising a first set of teeth and an actuator comprising a second, the second set of teeth configured to engage the first set of teeth and allow the actuator to be rotated in a first direction but not in a second opposite direction. The actuator further comprises one or more drive-dogs configured to engage a cutout on the inner wall of the dial, each drive-dog comprising a ramped edge configured to disengage the drive-dog from the cutout and lift the second set of teeth from the first set of teeth when the dial is rotated in the second direction.
