Patent ID: 9431868
Filing Date: 2016-08-30
CPC Classification: F16H,H02K

Claim Text:
1. A manual override tool for an electrically powered linear actuator having a linear thrust member, a motor and an actuator housing, the manual override tool comprising: a shaft having an accessible first end exterior to the actuator housing and a distal end portion inserted into the actuator housing; and a plurality of gear teeth on the shaft; wherein the accessible first end is configured to control engagement and disengagement of the plurality of gear teeth by moving the shaft linearly until the gear teeth are engaged with a plurality of notches or gear teeth provided on a periphery of an interior rotor of the electrically powered linear actuator, the motor coupled to the interior rotor having a rotational axis to rotate a screw shaft within the actuator housing, such that the engagement provides mechanical advantage to generate torque while turning the manual override tool via the accessible first end; wherein the manual override tool is an integral part of the electrically powered linear actuator having the actuator housing and the linear thrust member, with the accessible first end exterior to the actuator housing and the distal end portion inserted into the actuator housing, and with the gear teeth on the shaft engaged with the interior rotor of the electrically powered linear actuator; and wherein the accessible first end is further configured to manually operate the electrically powered linear actuator such that rotation of the shaft causes rotation of the interior rotor and screw shaft which transfers into linear motion of the thrust member to a desired position; and wherein the manual override tool is configured for the shaft to be movable in a linear direction transverse to the rotational axis of the interior rotor, from an engaged position with the plurality of gear teeth engaged with the periphery of the interior rotor to a disengaged position in a normal operating mode of the electrically powered linear actuator.