A lifting column can provide optimized performance with a nut gap system that efficiently and precisely measures a nut gap during lifting operations. The nut gap system can have a rotating core onto which a nut and traveler are positioned. The nut can be separated from the traveler by a nut gap that is monitored by at least one sensor that continuously extends through the nut to access the nut gap.

A drop table can employ a number of lifting columns respectively arranged with a nut and traveler each positioned on a rotating core with the nut separated from the traveler by a nut gap. The nut gap may be measured with a first sensor positioned within the nut and the first sensor detecting a nut gap distance with a first sensing feature. The first sensor can be changed to a second sensor that detects the nut gap distance with a second sensing feature that is different than the first sensing feature.

The invention relates to a method for locking a mobile element (101) of an aircraft, such as a hold door or a landing gear, the mobile element being moved between a deployed position and a closed or retracted position by means of an actuator (200) having a sliding stem (3) coupled to the mobile element, the stem being mounted so as to be able to slide in a body (1) of the actuator between an extended position corresponding to the deployed position of the mobile element and a withdrawn position corresponding to the closed or retracted position of the mobile element. The method of the invention comprises the step of positively blocking the sliding stem of the actuator in the withdrawn position.

Provided is an apparatus for limiting rotation of a steering wheel, and more particularly, an apparatus for limiting rotation of a steering wheel, whereby a rotation angle of the steering wheel can be limited to a predetermined angle. The apparatus for limiting rotation of the steering wheel, installed in a steering system, includes: an end-stopper disposed inside a housing through which a steering shaft on which the steering wheel is installed, passes, and the end-stopper limiting a rotation angle of the steering wheel to a predetermined angle.

A lifting column can provide optimized performance with a nut gap system that efficiently and precisely measures a nut gap during lifting operations. The nut gap system can have a rotating core onto which a nut and traveler are positioned. The nut can be separated from the traveler by a nut gap that is monitored by at least one sensor that continuously extends through the nut to access the nut gap.

Disclosed is a step actuator. The step actuator includes a housing; a stator installed in the housing; a rotor positioned radially inward from the stator, the rotor rotating and protruding from one side of the housing; a bearing installed at one side of the housing so as to be coupled with the rotor; a bearing cover coupled with one side of the housing to restrain movement of the bearing; a screw member coupled with the rotor to linearly move according to rotation of the rotor; and a mounting member coupled to the bearing cover to support the screw member.

Disclosed is a step actuator. The step actuator includes a housing; a stator installed in the housing; a rotor positioned radially inward from the stator, the rotor rotating and protruding from one side of the housing; a bearing installed at one side of the housing so as to be coupled with the rotor; a bearing cover coupled with one side of the housing to restrain movement of the bearing; a screw member coupled with the rotor to linearly move according to rotation of the rotor; and a mounting member coupled to the bearing cover to support the screw member.

Provided is an apparatus for limiting rotation of a steering wheel, and more particularly, an apparatus for limiting rotation of a steering wheel, whereby a rotation angle of the steering wheel can be limited to a predetermined angle. The apparatus for limiting rotation of the steering wheel, installed in a steering system, includes: an end-stopper disposed inside a housing through which a steering shaft on which the steering wheel is installed, passes, and the end-stopper limiting a rotation angle of the steering wheel to a predetermined angle.

A linear actuator comprises a motor having an output. An end block is connected to a casing and to the motor and has a counterbore at a distal end with a bearing seated and retained in the counterbore. A coupling assembly couples the output shaft of the motor to a threaded shaft for transmission of the rotational output to the threaded shaft. A sliding tube is in sliding arrangement with the inner cavity of the casing for moving in translation relative to the casing.

The invention relates to an actuating device comprising: a first element (7), a second element (8) able to move translationally with respect to the first element (7), and a locking device (6) comprising a catch (18, 20) able to move between a deployed position and a retracted position, the catch (18-20) being positioned with respect to the first element (7) in such a way that when the catch (18-20) is in a deployed position, the catch (18-20) allows the second element (8) to move with respect to the first element (7) in a first range of movement (A) and prevents the second element (8) from moving with respect to the first element (7) in a second range of movement (B), and when the catch (18-20) is in the retracted position, the catch (18-20) allows the second element to move with respect to the first element (7) in the second range of movement (B). This device is particularly suited to allowing actuation of a thrust reverser system and of a system that regulates air flow through an aircraft propulsion unit.