The inventive concept relates to an ultrasonic medical cartridge that may precisely move an ultrasonic wave generator by removing a backlash between a movable nut and a screw that move an ultrasonic wave generator, and an ultrasonic medical device including the same.

An actuating mechanism includes a transmission element configured to be displaced parallel to a transmission direction, an actuating element configured to perform an actuating movement to cause the displacement of the transmission element in the transmission direction, a conversion mechanism arranged between the transmission element and the actuating element which converts the actuating movement of the actuating element into the displacement of the transmission element, and a bracing element configured to introduce a pretension, preferably an elastic pretension, at least into the conversion mechanism. The invention also relates to a clutch actuator and a transmission actuator having an actuating mechanism in accordance with the present invention.

A linear drive device includes an output shaft having a first spiral groove, a movable body engaged with the first spiral groove so as to move in an axial direction, a first fixed shaft extending along an axial line, and a second fixed shaft extending around the axial line. The movable body includes a moved member engaging with the first spiral groove, and a slider moving in the axial line direction integrally with a moved member. The slider is provided with guide holes in which the first fixed shaft penetrates, a penetration part in which the second fixed shaft penetrates with play in the direction in which the first and second fixed shafts are connected, and a first and second receiving part for receiving a moved member when the moved member was rotated to one side along the axial line and when the moved member rotated to the other side.

A braking device of lever type, wherein actuation means is realized in the form of a screw jack (19) comprising an electric motor (20) and an angle gear (21) driving a jack screw (22) which is coupled between the levers (2; 5). A load sensor (29) coupled to one lever controls, via a power regulating means (25), the force applied in braking mode. A position sensor (31) coupled to the other lever determines the lever's positions in idling mode.

A good-orientation, low-drift micro-movement subassembly for angle adjustment as a precise driving screw for angle adjustment, comprising a slotted knurling handle, a turnbuckle and a central cylindrical shaft. The invention is precise for linear displacement, good orientation, low-drift, stable and reliable adjustment, which can be used for a variety of precision-oriented, small drift, precision micro-angle adjustment of the drive screw.

An electromechanical-hydraulic piston actuator providing pressurized pressure medium for a brake system of a vehicle, including an electric motor having a stator and a rotor, a rotation-translation mechanism driven by the electric motor and which has a rotatable threaded nut and a threaded spindle prevented from rotating and displaceable in its axial direction, a piston coupled with the threaded spindle in the axial direction thereof, a hydraulic cylinder having a hydraulic chamber filled with pressure medium into which the piston is displaceable from a rear piston position towards a forward piston position to pressurize the pressure medium and/or expel it from the chamber. A hydraulic connection is connected to the chamber via which pressure medium can be expelled from the chamber. An isolation device is provided for the piston-travel-controlled isolation of the rotational coupling between the rotor of the electric motor and the threaded nut.

A compact translation stage having a frame, a motor, a carriage, a translation screw and at least one guide is described herein. The carriage is slidably coupled to the guide and engages the screw. The screw is rotatably coupled to the motor. The motor is embedded in an inner volume of the screw and the screw rotates upon actuation of the motor to translate the carriage relative to the frame.

An adjustable axial gap of the thread rod assembly has a brace, a thread rod rotationally deployed onto the brace, a thread bearing for gripping one end of the thread rod is screwed into the first positioning hole of the brace, and one side of the thread bearing withstands against the thrust washer. The user may rotate the thread rod by applying force passing through the thrust washer onto the thread rod and shifting an axial moving of the thread rod to adjust the axial gap of the thread rod assembly which attains the merits of simple installation and easy application.

A relative translation assembly operable with a drive mechanism. The relative translation assembly can have a fixed support member, a translatable member supported by the fixed support member, and a translation guide portion to facilitate translation of the translatable member relative to the fixed support member. The translation guide portion can have a fixed translation member and a movable translation member. The movable translation member can be configured to maintain preload on the fixed and movable translation members and accommodate thermal expansion. The drive mechanism can be configured to cause translation of the translatable member relative to the fixed support member.

Provided is a micro head having a simple structure and yet entailing extremely little backlash.

A micro head includes a spindle, a sleeve, a thimble, a backlash absorbing member, and a collar, wherein the cylindrical backlash absorbing member is fixed to the sleeve in a state where the spindle is inserted at a position in the sleeve.