Abstract: A servo drive system of a press machine has a pair of servo motors which can generate necessary ram pressure by compositing and using a torque based on the same speed-torque characteristics. The servo motors are symmetric with each other in a mirror image manner. The servo motors are opposed to each other at opposite ends of an operation shaft which vertically moves a ram. The servo motors are integrally operated, thereby directly driving the operation shaft.

Abstract: A linear actuator, preferably for sickbeds and beds for domestic use, comprises a reversible electric motor (2) which, via a reduction gear, drives a spindle (4) with a nut (5) secured against rotation so that an activating element (6) connected with the nut is moved to and fro in response to the direction of rotation of the motor. In an emergency, the actuator may be driven manually with a hand crank, as a rear attachment, with which the actuator is secured, has a longitudinal opening in the longitudinal axis of the spindle, whereby the hand crank may be caused to engage the spindle. For this purpose, a shaft member is mounted in the rear attachment, said shaft member being engaged with the spindle and protruding rearwards from the rear attachment with one end. Control of the motor typically takes place via an H-bridge so that the motor does not short-circuit when the actuator is operated manually, it is ensured that the motor is not self-locking when the actuator is operated manually.

Abstract: An actuator and door latch system incorporating the same. The actuator moves a door latch between locked and unlocked positions with rapidity using a gear train directly coupled to an actuator motor or energy stored in an energy storage element such as a spring.

Abstract: A speed reducer 100 to be attached to an articulated portion of an industrial robot includes a first-stage reduction gear mechanism 10 of a spur gear type speed reducing unit and a second-stage reduction gear mechanism 30 of an eccentric rocking type speed reducing unit, and the output from the eccentric rocking type speed reducing unit is extracted from an internal gear member or a support member. When the input speed to the first input gear unit is 2,000 RPM, the output from the eccentric rocking type speed reducing unit is 20 RPM or higher. The reduction ratio of the first-stage reduction gear mechanism is so selected that individual crankshafts may rotate not over 1,000 RPM when the output from the eccentric rocking type speed reducing unit is 20 RPM or higher.

Abstract: In a robot, a support member is supported to an arm to be reciprocable with respect to one of first and second sides of the arm in a predetermined direction. A rotary member of a converter is coupled to a motor, and a liner movable member of the converter is contacted to the rotary member and lined to the support member. The converter works to transfer rotary motion received y the rotary member from the motor as linear motion to the liner movable member rough a transfer contact portion between the rotary member and the liner movable member to thereby move the liner movable member together with the support member in the predetermined direction. The transfer contact portion between the rotary member and the liner movable member is located offset to the one of the fast and second sides of the arm relative to the other thereof.

Abstract: The invention relates to a drive mechanism which can be used in a scanning device. The inventive mechanism comprises a device which converts a rotary motion produced by a motor member into a linear reciprocating motion. According to the invention, the aforementioned converter uses: a planetary rotating table (10) which is rotated by the output shaft (9) of the motor member (8), a planet pinion (15) which is pivot mounted to the table (10) and which meshes with a ring gear with a serrated bore (14) that is coaxial to the shaft (9) and solidly connected to the body of the motor member (8), and a drive member (19) which is borne by a support (18) that is solidly connected to the pinion (15). The mechanism can be used in the scanner of an ultrasound probe.

Abstract: A stroke adjustment mechanism having fewer parts that are easier to manufacture. In order to translate stroke adjustment into an eccentric offset of a rotating shaft to act as a rotating cam surface, the present invention utilizes two separate and identical plungers. The plungers are easier to manufacture as they do not require complex machining in mating parts. The present invention is also easier to assemble than prior designs. The present invention allows the drive gear to be produced with a simple round ID bore and also uses a one-piece, easy to machine round shaft. This provides for a simple and strong design.

Abstract: A rotary motor shaft extends through a rheological brake unit through which variable braking resistance to rotation of the motor shaft is applied while it undergoes rotation in response to torque mechanically applied thereto in sequence through a peripheral gear by a selected pair of diagonally aligned electro-magnetically energized push-rod actuators adjustably positioned axially along a varying diameter section of the gear under electrical control for stroke change to yield a variable output torque.

Abstract: A step-by-step motor able to carry out up-and-down motion includes a housing, a transmitting gear, a worm gear, an interacting member, a top rod, a circuit board with a transmitting motor, a cover body and an adjusting member. The level of the headlamp of an automobile can be adjusted by inserting an adjustment tool through one lateral through hole of the recessed chamber of the cover body from outside to have the engage teeth of the adjustment tool engaged with one engage notch of the adjusting member and turning the adjustment tool to actuate the adjusting member to rotate and actuate the top rod to move upward, or by inserting an adjustment tool in the bottom slit of the projecting post of the adjusting member and turning it around to drive the adjusting member to rotate and actuate the top rod and the headlamp to move upward or downward.

Abstract: Apparatuses, systems, and methods for processing system foodstuff are shown and described. Food processing systems can hold and prepare food for consumption. The disclosed embodiments provide a drive mechanism that utilizes a contoured surface between a ratchet wheel and a drive mechanism that rotates the ratchet wheel to move the ratchet wheel toward and in engagement with a drive wheel for initiating rotation of the drive wheel and to disengage the ratchet wheel from the drive wheel to allow the drive wheel to rotate freely. The drive wheel is configured to couple to a processing component of the processing system.

Abstract: A vibration exciter, particularly for a vibration pile driver, comprising at least two axles disposed parallel to one another, as well as at least two imbalance masses, which are attached to one or more of the axles. The relative rotary position of the imbalance masses can be adjusted relative to one another by at least one rotary oscillating motor having a rotor shaft and a stator housing. The rotor shaft is an integral part of one of the axles, and the rotary position of the stator housing relative to the rotor shaft can be changed. The stator housing can be locked to the rotor shaft. An oscillating motor suitable for use in a vibration exciter, comprises a rotor shaft and a stator housing, between which working chambers are formed. The stator housing can rotate about the rotor shaft and can be locked relative to the rotor shaft.

Abstract: A positive-guidance apparatus for conversion of a rotary movement of a driven cam element to a reciprocating movement of a part. The apparatus has a first cam area which pushes the part away in a first direction. A second cam area, which is formed on another cam pulls the part back with the aid of a flexible element.

Abstract: Disclosed herein is an elliptical motion drive device for use in a step screen. The elliptical motion drive device comprises first and second eccentric wheels coupled to a single drive shaft to be eccentrically positioned to each other. Upon rotation of the drive shaft, the first and second eccentric wheels rotate and move along guide rails formed in different directions from each other to transversely and longitudinally rotate movable lattice plates connected to a movable frame of the step screen, thereby achieving elliptical motion of the movable lattice plates.

Abstract: A transmission device, in particular for the adjuster of a vehicle seat, is suitable for converting a linear driving motion into a rotary output motion. According to an exemplary embodiment, the device has at least one lever that extends radially relative to a driven axis and is connected thereto. The at least one lever has a free end that interacts with an inclined surface that is moveable in a substantially linear manner in the direction of a driven shaft.

Abstract: A drive mechanism for a power tool. The power tool includes a motor having a drive shaft and an output member adapted to support a tool element. The drive mechanism includes a drive assembly engaged with and driven by the drive shaft and a drive arm drivingly connected between the drive assembly and the output member to transmit driving force from the drive assembly to the output member. The drive arm is configured to absorb an impact.

Abstract: An annular piston (21) is inserted into a cylinder hole (20) of a housing (4) so as to be vertically movable and be prevented from rotating. Into a cylindrical hole (24) of the piston (21), a cylindrical rotating member (25) is inserted while prevented from moving vertically. A ball screw mechanism (28) is provided between the piston (21) and the rotating member (25). On an outer peripheral surface of the rotating member (25), a circulation passage (59) which communicatively connects a start end and a terminal end of a male spiral groove (56) is formed in a recessed manner. Into a guide hole (29) formed in an upper half of the housing (4), an output rod (30) is inserted rotatably and movably vertically. An input portion (41) of the output rod (30) is connected to the rotating member (25) so as to transmit rotation. By driving the piston (21) upward, a bolt (45) provided on an upper end portion of the output rod (30) is engaged with an internal threaded hole (12) of a work (10).

Abstract: The inventive axoid mechanism and axoid press relate to mechanical engineering, to devices for converting power and speed parameters of linear motions and are based on power axoid mechanisms whose friction is eliminated by the substitution of a sliding motion with an axoid rolling and by the reciprocal balance of normal reaction components in bearing elements of the novel balanced power axoid mechanism. Said mechanism is embodied in the form of a closed system of axoid mechanisms comprising end elements which are linearly movable in the direction thereof.

Abstract: A linear actuator with a redundant structure comprises a motor, a gear box, a housing, a driving element and a follower element. An axis of the motor is protruded out of the linear actuator. When the linear actuator is stopped operation because of lacking power source, the linear actuator can be driven by rotating the axis, so as to solve the problem of unable to drive the linear actuator when lacking of electrical power.

Abstract: With certain technical applications actuation has to be carried out at positions where the required energy supply is costly or difficult to provide. The invention offers a solution to this problem with a mechanical process, which functions without energy, for those cases where operation-related variable force or torque occurs, or where such force or torque fluctuations can be artificially produced. The invention concerns, on the one hand, the storage of rope segment that, multiplied by existing force, represents stored work, whereby the force contact point moves against the direction of force. On the other hand, it concerns the subsequent utilization of this stored rope segment for actuation, with actuation being gained from the stored rope segment through force prevailing at this time, whereby the force contact point moves in the direction of force.

Abstract: A portable power tool having a turbine unit (10a, 10b) is proposed, which is intended to be driven by a suction air flow (12a; 12b), and having a gearing unit (14a; 14b; 14c) via which the turbine unit (10a, 10b) is coupled to an output unit (16a; 16b; 16c).

Abstract: The specification discloses a machine device (10) driven by an inline electric motor (15) to reciprocate a cutting blade (12) when removal of a glass or similar panel is required from a surrounding mount structure, the machine device (10) includes an actuating mechanism having a first input shaft (22) rotatably driven about an input axis (23) by the electric motor (15), a second output member (24) including a connection (42) for a cutting blade (12) restrained for reciprocation along a second output axis (25), a first swivel connection (32) eccentrically disposed laterally from the input axis (23), a second swivel connection (31) having its swivel or pivot point on said second output axis (25), and a connector (26) connecting the first and second swivel connections (32, 31).

Abstract: A motion conversion system is described. The motion conversion system comprises a first torsional member operative for rotating in a first direction. A second torsional member is offset a distance from the first torsional member, wherein the second torsional member is operative for rotating in a direction opposite from the first direction. And, a lateral member has a lower surface connected to the first and second torsional members. Wherein, translational movement of the lateral member results from rotational movement of the first and second torsional members.

Abstract: Systems for facilitating conversion between reciprocating linear motion and rotational motion include a continuous undulating track circumscribing a circular profile and generally defining a cylindrical volume having a central axis; a reciprocator that is configured to linearly reciprocate along the central axis; a converter coupled to the reciprocator to reciprocate with it, configured to rotate about the central axis, and engaged with the undulating track; and a rotator engaged with the converter and configured to rotate about the central axis with the converter but not to linearly reciprocate along the central axis.

Abstract: A pipette is provided having a reduced operational vibration and noise and an increased operational accuracy. The pipette includes a body and a drive unit mounted within the body. The drive unit includes a motor, an operating rod configured for movement under control of the motor, a nut, and an elastic strip. The nut is mounted to the operating rod and is configured to allow translational movement of the operating rod with respect to the nut, but not to allow rotational movement of the operating rod with respect to the nut. The elastic strip is mounted to the nut and to the body to exert a rotational torque on the nut.

Abstract: A thrust transfer device includes: a motor serving as a driving source; a sun gear rotatable to an output shaft of the motor, a plurality of nut members each provided with an outer peripheral external tooth meshed with the sun gear and provided with an inner peripheral nut side spiral screw groove; and a plurality of screw shafts, each provided, at an outer periphery thereof, with a screw side spiral screw groove corresponding to the nut side spiral screw groove, and reciprocally moved in accordance with nut rotation by fitting the screw side screw groove into the nut side screw groove; and an internal tooth gear meshed with the external tooth formed to each of the nut members. When the sun gear is rotated, the nut members perform planetary motion inside the internal tooth gear, by which the screw shafts are reciprocally moved in axial directions thereof.

Abstract: Vibrational apparatus capable of providing a vibrational output, said apparatus comprising or including an assembly having a shuttle capable of shuttling between complementary structures, at least one of which complementary structures provides the vibrational output, the arrangement being characterised in that there is a drive to rotate the shuttle and there are magnetic interactions between the rotating shuttle and the complementary structures such that interactions with each complementary structure, and the phasing of the complementary structures relative to the shuttle, alternating magnetic results in the shuttling movement of the shuttle.

Abstract: The invention relates to a mechanism for converting a linear motion into an arcuate motion, which can be used in a scanning device. The inventive mechanism comprises: a structure (35) which can move along a linear path and which can be connected to a drive device (34), a support part (39) which is mounted to the mobile structure (35) such that it can slide perpendicularly to the aforementioned linear path, at least one connecting rod (48, 49) which is articulated to (i) a fixed structure around a first axis of rotation located in a plane that is perpendicular to the linear path and (ii) the mobile structure (35) around a second axis that is parallel to the first. The arcuate movement of the support part (39) results from the sliding thereof under the action of the connecting rod (48, 49?) and the translational movement produced by the mobile structure (35?).

Abstract: The invention relates to a drive device (9) comprising a housing (10), a drive shaft (14) which is mounted in the housing (10) and which comprises a shaft axis (15) and a first and a second electric drive (12,13). The drive shaft (14) can be rotated about the shaft axis (15) by means of a drive (12,13) and can be displaced in an axial manner along the shaft axis (15). The drives (12, 13) are aligned on the shaft axis (15) and comprise, respectively, a stator (16,19) and a rotor (17,20). The stators (16,19) are secured to the housing (10). The rotors (17,20) are embodied as hollow shafts and are mounted on the housing (10). The rotor (20) of the second drive (13) is rotationally secured to the drive shaft (14) by means of a linear bearing device (28), and in a manner which enables it to be axially displaced. The rotor (17) of the first drive (12) is rotationally secured to a threaded spindle (27) and is connected in such a manner that it cannot be axially displaced.

Abstract: A fuel-free motive power installation comprising two slides respectively disposed on both sides of a lever; two elastic return structures respectively disposed either on top of or below the lever; and two traction rods each with both sides respectively pivoted to a slide and a dancer from a hammer; the swinging dancer respectively applying thrust and pull to both traction rods for the slide to laterally travel; the lever pressing against each elastic return structure to take advantage of the return force from the elastic return structure and central gravity of the hammer for the lever to swing up and down in opposite direction to produce motive power; and a linking structure transmitting the motive power to an energy collection structure thus to produce energy.

Abstract: Reciprocating engine construction wherein a rotating assembly converts the linear motion of the piston into rotational motion more efficiently, therefore yielding more torque and working power while using less fuel. The rotating assembly is three components working together, an interchanger unit with track rollers mounted at both ends and attached at it's center to the connecting rod by bearings allowing it to rotate while reciprocating, a stationary cylindrical unit having opposing wave shaped races (tracks) encircling it's perimeter with slopes of at least 45 degrees to convert the reciprocating motion to rotational motion on a one to one ratio 90 degrees perpendicular to the axis of the interchanger as the track rollers follow the slopes of the races, a rotating carrier that keeps the track rollers aligned and transfers the converted rotational motion to the output shaft by means of gears.

Abstract: A reversible ratchet mechanism includes a pair of roller clutches set to operate in opposite directions when engaged by a belt. During the forward motion of the ratchet assembly in either direction of propulsion of the belt, one roller clutch is disengaged while the other is engaged and locked, thereby propelling the belt. During the backward stroke, the engaged roller clutch is free to rotate. The result is that the reciprocating motion of the assembly is converted into the linear motion of the belt. The ratchet assembly includes a shift mechanism to reverse the engagement of the roller clutches and change the direction of propulsion of the belt produced by the push/pull action of the operator. The invention is advantageously used in conjunction with a wheelchair.

Abstract: A driving mechanism for operating a shaping die to join stacked plates by a deep-drawing and swaging operation is implemented as an electric drive, such as a linear motor or a rotary motor, which is operatively connected to the shaping die.

Abstract: An actuator arrangement comprises a first linear actuator 12 having a first output shaft 14, a second linear actuator 16 having a second output shaft 18, the first and second output shafts 14, 18 being pivotally connected to a link 20, and a pivotable output connection 26 provided on the link 20 intermediate the locations at which the first and second output shafts 14, 18 are pivotally connected to the link 20.

Abstract: The present invention relates to a device that allows an output shaft to perform axial motion and automatic locking, in particular, a manual switch-off device for a permanent magnet switch operating mechanism. A large shoe plate and a small shoe plate are fixed onto a base plate. A transmission shaft is rotatably installed onto the large shoe plate and the small shoe plate that are in parallel with each other. An eccentric wheel is fixed onto the transmission shaft between the large shoe plate and the small shoe plate. An output shaft in parallel with the large shoe plate and the small shoe plate is installed onto the base plate. One end of the output shaft is fixed with an end cap. The large shoe plate has an open slot. The eccentric wheel has a spring column fixed thereon, and the spring column connects to one end of a manual switch-off spring through the open slot. The other end of the manual switch-off spring hooks to a spring mount point on the large shoe plate.

Abstract: A method for collecting air-transportable evidence samples from objects and clothing: (a) utilizes a collection tube having open upstream and downstream ends, and at a point between these ends a constriction in the cross-sectional area of the tube, (b) utilizes an applicator stick having proximate and distal ends, the length of this stick being less than the length of the collection tube between its constriction and downstream end, and the distal end of this stick having an air permeable tip, (c) places the proximate end of the applicator stick in the upstream end of tube, (d) orients the stick so that its tip is proximate the tube constriction, and (e) imposes a suction force on the downstream end of the tube so that any air-transportable evidence sample proximate the upstream end of the collection tube is sucked into the tube and becomes lodged on the stick's tip.

Abstract: A valve actuator comprising a lower housing comprising a mounting spool that is operable to couple to a valve body. A rotating sleeve is disposed within the lower housing and coupled to a stem connector. A fixed sleeve in disposed within the lower housing and includes a first slot disposed therethrough. A second slot is disposed in the rotating sleeve, wherein at least one of the slots is a helical slot. An axle engages both the first slot and the second slot. A shaft is coupled to the axle and extends through a connector flange that is coupled to an upper end of the lower housing. A piston is coupled to the shaft and movably disposed within an upper housing that is coupled to the connector flange. Axial movement of the piston within the upper housing will result in rotational movement of the rotating sleeve.

Abstract: A device to be used with an adjusting element comprising a rod piston (3) displaceable with the aid of a motor (4) in a piston tube (2). The motor (4) is rotatably arranged at the adjusting element (1) through a worm gear (6), either directly or through a motor attachment (5), wherein the motor (4) extends in an extension plane in parallel with the piston tube (2), said worm gear (6) having a throat formation (7) for axial fixation of the position of the motor (4) in the adjusting element (1) while a free rotation of the motor (4) is practicable through 360° in order to make possible, in applications with limited space, an eligble position fixation of the motor (4) in a predetermined angle in relation to the adjusting element (1).

Abstract: The invention concerns a pneumatic control rotary actuator that incorporates a control piston of a rack toothing engaging with a pinion to cause it to rotate together with an item holder device; the pinion has toothing made up of several parallel pins (23) spaced at an angle, positioned and held orderly between a base flange (21) and an item holder disk head (22); the base flange and the disk are each produced by compression moulding, die-casting, sinterisation and the like, using a low mechanical resistance material whereas said pins are made of some other material with high mechanical properties and hardness.

Abstract: The present invention provides a movement output apparatus for controllably moving a movement output means in at least two spatial dimensions, the apparatus including: a cog means with a first diameter; a ring with a track formed on an inner surface of the ring, the track having a second diameter which is larger than the first diameter; wherein: the cog means is rotatable by first driving means; the ring is rotatable by second driving means; the cog means is arranged to move, in use, along the track; and the movement output means is attached to the cog means, whereby, in use, movement of the cog means effects movement of the movement output means, and the movement of the movement output means is controllable by control of the first and second driving means to produce substantially linear movement of the movement output means to produce substantially linear movement of the movement output means.

Abstract: A drive mechanism is interposed between two members to make the members move relatively with respect to each other. At least one of the two members is guided to move linearly. The drive mechanism comprises: cam followers that are rotatably supported on one of the two members, that are arranged in the linear moving direction, and that are spaced from each other; and a cam that is rotatably supported on the other one of the two members and that is provided in its circumference with a cam groove in which the cam followers engage, the rotation axis of the cam being arranged in the direction of the linear moving direction. The two members are made to move relatively with respect to each other by driving the cam to rotate and making the cam followers engage successively in the cam groove and move in the direction of the rotation axis.

Abstract: A slide drive device for a press changes a slide stroke without a changing either a top or bottom dead center position of a slide. The slide drive device allows stroke adjustment without a loss of left-right balance in the slide drive device. An adjusting mechanism is driven by an eccentric part and a crank shaft. The adjusting mechanism is adaptable to fix either the top or bottom dead center position. A linear guide mechanism, is driven by the adjusting mechanism, and transfers adjustments in slope angle into changes in stroke relative to either the top or bottom dead center position without requiring a change in the dead center position. Alternate embodiments allow positioning and adjustment for convenience and economy.

Abstract: The present invention is a modular lid system for an underwater swimming pool cover or other underwater enclosure. The modular lid has a rigid lid portion which has an overall buoyancy such that the lid portion closes the enclosure underwater by force of gravity. The modular lid system also has a remote power pack for providing a source of hydraulic power to the modular lid. The remote power pack is located at a position remote from the swimming pool. The remote power pack includes a hydraulic pump and a hydraulic drive mechanism is actuated by the remote power pack. The drive mechanism has a predetermined range of movement. A decoupled linkage mechanism extends between the hydraulic drive mechanism and the lid portion for causing limited opening movement thereof. The limited opening movement corresponds to the predetermined range of movement of the hydraulic drive mechanism.

Abstract: A variable angle cam-drive engine in which the torque output generated at a given engine speed (as represented by, for example, piston reciprocation frequency) can be varied by changing the operating angle of cam mechanisms in a power conversion mechanism of the engine. A power conversion mechanism, having a plurality of cam mechanisms and a cam-angle mechanism, for use in a variable angle cam-drive engine that can vary the torque output generated at a given engine speed by changing the cam-angle of the plurality of cam mechanisms using the cam-angle mechanism.

Abstract: A toy water gun of the type for ejecting fluid therefrom. The toy water gun may include a housing having a longitudinal axis and a reservoir attached to the housing for holding fluid. A holding area may be included which is selectively in fluid communication with the reservoir. A pump may be provided for generating pressure differential across a pair of one-way valves to move fluid from the reservoir to the holding area and from the holding area to at least one nozzle. The at least one nozzle may rotate as the pump is being actuated by a user. A rotating bezel may be provided to vary the angle of the nozzle relative to the longitudinal axis of the toy water gun.

Abstract: The invention relates to a linear, hydraulic pivot drive, especially for the flap control system of aerodynamic structures. Said pivot drive comprises a housing provided with ports for introducing a hydraulic medium, a piston which is arranged inside the housing and can be axially displaced by the effect of the hydraulic medium, and an output shaft which is provided with coarse threads and interacts with the piston in order to cover the axial displacement of the piston into a rotational movement. The invention is characterized in that the output shaft is integrated into the piston, the coarse threads running in the same direction and engaging in the piston, and the cross-section of the piston has a spline profile for effectively preventing a rotational movement of the piston.

Abstract: In one aspect, the present invention is directed to an electric toothbrush. The toothbrush includes a housing, an electric motor, a first transmission and a second transmission. The electric motor is connected to the housing has a motor output member for rotation about a motor output axis. The first transmission is connected to the housing, and converts rotational movement from the motor output member into rotational reciprocating movement at a first average angular speed. The second transmission is linked to the first transmission, and converts rotational reciprocating movement from the first transmission into rotational reciprocating movement at a second average angular speed about a second transmission output axis that is parallel to the motor output axis. The second transmission drives an output member to reciprocate at the second average angular speed about the second transmission output axis. A brush head is removably connectable to the output member.

Abstract: A device for transforming a rotational movement into a reciprocating to-and-fro movement has a cam element on a driven carrier shaft. The cam element has an eccentric control area, or lobe. A cam follower can be displaced or pivoted by the cam element. The cam element is rotationally mounted in a flexible encompassing element which is movably connected to the cam follower perpendicular to the axis of rotation of the cam element. The flexible encompassing element surrounds the eccentric control surface of the cam element and a non-driven bearing surface for the cam follower.

Abstract: The invention relates to a furniture drive (2) for adjusting parts of a piece of furniture in relation to one another which is configured as a dual drive. Said drive comprises two drive units (4, 4?), every drive unit (4, 4?) being provided with a linearly displaceable drive element that is functionally linked with a pivoted lever for pivoting said lever in the mounting position of the furniture drive. Said pivoted lever in turn is functionally linked with a part of the piece of furniture to be adjusted. The drive according to the invention is further characterized in that the linearly displaceable drive element or a support element (24) linked therewith is provided with a support surface (26) for supporting the pivoted lever (18) in a position remote from its pivot axis (16) in the mounting position of the furniture drive (2), which surface is inclined with respect to the axis of motion (29) of the drive element.

Abstract: The scanning system of the invention includes a structure driven in rotation around a first axis, a structuremounted rotating on the structure around an axis parallel to the first axis, a structure for supporting an echographic probe mounted rotating on the structure around a third axis parallel to the axis, a coupling element between the structure and the structure and a coupling element between the support structure and the structure. This system being able to move the probe along a variable band arciform trajectory.

Abstract: A metering pump includes an actuating mechanism, and a plurality of piston cylinders coupled to the actuating mechanism. A first of the cylinders has a working volume that differs from a second of the cylinders. The actuating member is centrally located and the cylinders are arranged radially about the actuating mechanism. The working volume of the cylinders can be varied by adjusting the spacing of the cylinders from the actuating mechanism, thus varying the stroke of pistons housed within the cylinders, and/or by providing the cylinders with different inner diameters. A method of metering fluids includes independently adjusting stroke of a plurality of pistons to adjust the volume of metered fluid, and selecting different cylinder diameters to adjust the volume of metered fluid.