Bidirectional actuator has gear ring moved by a pivot mounted lever that has a selective engagement quadrant gear coupling

摘要

The bidirectional actuator has an internal tooth gear ring (1) that is selectively engaged by one or other of quadrant gear teeth segments (31,32) on a common pivoted arm (3). An actuator lever (2) has follower pins (21,22) that move against curved tracks to engage the one or other of the quadrant gear segments when the lever is moved up or down. This rotates the gear ring. A spring (8) provides a resisting force.