Patent ID: 7963360

Claim:
An actuator assembly comprising: a frame; an extension member that has a first end and a second end and that is selectively movable with respect to the frame between a retracted position and an extended position; a base member that is operatively connected to the extension member for selective translation with respect to the extension member, and that is selectively movable between a first position and a second position with respect to the frame; a first latch configured to selectively engage the second end of the extension member to retain the extension member in the retracted position with respect to the frame; a second latch configured to selectively engage the base member to retain the base member in the first position with respect to the frame; a first spring between the first end of the extension member and the base member, said first spring being compressed and urging the first end and the base member apart when the extension member is in the retracted position and the base member is in the first position; said actuator assembly being selectively movable between a first configuration in which the extension member is in the retracted position and the base member is in the first position, a second configuration in which the extension member is in the extended position and the base member is in the first position, and a third configuration in which the extension member is in the retracted position and the base member is in the second position; and a ratchet mechanism configured to selectively move the actuator from the third configuration to the first configuration by moving the base member from the second position to the first position.