Abstract: A profiled nut (1) of a screw drive includes a sleeve (3) produced from sheet steel, has a non-cuttingly formed rolling profile (4) on the inner circumference for rolling contact with rolling bodies and is hardened in a heat treatment method at least in the region of the rolling profile (4). An inner lateral surface of the sleeve (3) having the rolling profile (4) is hardened and has a higher Rockwell hardness. An outer lateral surface of the sleeve (3) is designed such that it can be welded and has a lower Rockwell hardness.

Abstract: A drive carriage for a door, in particular garage door, comprising a body which is linearly shiftably mountable in a rail of a door drive, and a door driver pivotally mounted on the body, wherein a carriage driver which is shiftable relative to the body and is connectable with a power transmission means of the door drive, a latch mounted in the body via a flexible element and is pushable into a recess of the carriage driver by the flexible element, and a latching slide which urges the latch against the flexible element into an unlocking position in which the latch is not pushed into the recess by the flexible element, and which in a drive position permits pushing of the latch into the recess of the carriage driver by the flexible element in order to take a locking position in which the carriage driver is coupled with the body.

Abstract: A medical device drive system including a lever body having portions defining a lever body cavity, a nut housing in the lever body cavity, and a first nut at least partially in the first nut cavity. The first nut is slideable in the first nut cavity between an engaged position in which the lead screw interface is engaged with the engagement portion of the lead screw, and a disengaged position in which the lead screw interface is not engaged with the engagement portion of the lead screw. The lead screw interface of the first nut is selectively engageable with the engagement portion of the lead screw by sliding the lever body and pin relative to the first nut housing.

Abstract: A linear guide device including an actuator including: a base section; a slider slidably provided to the base section; and guide sections disposed between the base section and the slider in a state that the guide sections are extending in the sliding direction of the slider. DLC films are formed on the guide sections, and the guide sections are locked to the slider such that the guide section can slide in a state that the DLC films are applying a predetermined preload with respect to the base section.

Abstract: An actuator is provided. The actuator includes a housing and a ram linearly movable relative to the housing. The ram is selectively mechanically coupled to a drive screw of the actuator such that in one configuration, the ram is decoupled from the drive screw to allow it to linearly move independently from rotation of the drive screw.

Abstract: For controlling the movement of the push device of a pump of the syringe driver-type, the pump comprising a casing (100), a syringe cradle (200) for a syringe (400), a push device (300) mobile relative to the casing (100) and capable of being driven in rotation parallel to the longitudinal axis of the syringe by driving means, clutch means (310, 350, 351) for engaging or disengaging the push device on the driving means, the push device is disengaged from the driving means, in order to move it manually, and the presence or absence of a contact between the push device and the syringe head is determined. If the push device is not in contact with the syringe head, it is advanced manually. Blocking of the advance movement of the push device is triggered only if, at the beginning, the push device was not in contact with the syringe head.

Abstract: A connector system having first and second connector segments held together by a rod threadably received in an internal axial bore through each of the first and second connector segments. Each connector segment has a breakaway portion formed from an angled face on one connector segment that cooperates with the mating angled face on the abutting connector segment to form a V-shaped breakpoint between the two connector segments. An intermediate segment can be positioned there between to provide two breakpoints, and multiple intermediate segments can be used for additional breakpoints. Upon impact, the system breaks at the breakpoint and only the rod needs to be in most cases. A longitudinal bore through the rod permits adaption of the rod to selected loads.

Abstract: A device (100) for dispensing a dental material which comprises a spindle drive (10) for driving a piston (111) for extruding the dental material. The spindle drive (10) comprises a pair of threaded spindles and a clasp nut member (20) which is adapted for engaging with anyone of the spindles. The clasp nut member has first and second thread structures (11, 12) which are offset relative to each other by about ½ of the pitch of the thread of the spindle or the thread structures (11, 12) in a dimension of the pitch.

Abstract: In one use, a motor mechanism for an electronic lock is disclosed. In one embodiment, the motor mechanism includes a split nut that travels along a threaded screw drive. When the split nut is physically limited from further travel along the screw drive, the split nut decouples and recouples with the screw drive to reduce drag on the motor and thereby reduce motor burnout. As a result, smaller, more cost effective and efficient electric motors may be utilized together with simplified electronics.

Abstract: An electric push rod and release mechanism combination structure includes an electric push rod assembly using a coupling for connection to movable frame parts of equipment and a motor to rotate a transmission screw rod through a reducing gear set in moving a retractable tube set between an extended position and a received position, and a release mechanism consisting of a mounting socket, a connection socket, a torsion spring, a clutch module and an operating device and connected between the retractable tube set and the coupling of the electric push rod assembly for operation by a user to release the retractable tube set from the coupling safely with less effort.

Abstract: An electromechanical actuator incorporates a drive housing connected to a motor for rotational motion. A screw is employed with an actuating nut having protruding engagement bosses and a drive coupling is concentrically received within the drive housing having segments equal to the number of engagement bosses. Each segment has a cavity to receive a respective one of the engagement bosses and the segments are cooperatively positionable from an active position radially compressed to engage the bosses within the cavities to a released position radially expanded to disengage the bosses from the cavities.

Abstract: A safety release mechanism for a linear actuator having a lead screw and a telescopic tube includes a nut, a protection shroud, a sleeve connected to the telescopic tube, a clutching element and a spiral spring. The nut is threadedly and drivingly connected to the lead screw. The protection shroud is fixedly and drivingly connected to one side of the nut. One end of the sleeve is sheathed on the protection shroud while the other end thereof is fixedly connected to the telescopic tube. The outer periphery of the sleeve is formed with notches. The clutching element is sheathed on the sleeve and formed with protrusions configured to be selectively inserted into or removed from the notches. The spiral spring is sheathed on the protection shroud and the clutching element. With this arrangement, cleavage or damage of components can be prevented to thereby increase the safety of operation.

Abstract: A power transmission capable of regulating the disengagement of a nut part from a screw part, and the like are provided. The power transmission is constructed of a rotation shaft having a thread formed on a periphery thereof; a nut member capable of being opened and closed, the nut member having a thread engaged with the thread of the rotation shaft, and pinching the rotation shaft and moving as the rotation shaft is rotated; a regulating part enabling movement of the nut member by regulating opening of the nut member; and a regulation releasing part capable of releasing engagement between the nut member and the rotation shaft by opening the nut member.

Abstract: A running board assembly is provided for a motor vehicle. The running board assembly includes an actuator housing fixedly mounted to the motor vehicle. An arm is slidable relative to the actuator housing in opposing inboard and outboard directions for movement into and out of the actuator housing. A linear mechanism is disposed within the actuator housing and is spaced apart from the arm. The linear mechanism is also operably connected to the arm to provide linear movement of the arm in the inboard and outboard directions. A step is pivotal relative to the arm and movable in the opposing inboard and outboard directions therewith for movement between a stowed position and a deployed position.

Abstract: A separable carrier block assembly constructed for cooperation with a threaded lead screw of a machine. The carrier block assembly is constructed of mating block body halves comprising a first body half and a second body half. The mating body halves are separable at generally midway the depth of the carrier block body. The inside faces of the first and second block halves have cooperating and mating lands and grooves which are constructed and arranged to form a unitary nested carrier block body. A generally threaded semi-circular bore is formed into the inside faces of the first and second block body halves and extends generally midway of the depth of the nested carrier block body and extend along the length of the block body. The threaded bore matches the threads of a threaded lead screw. The threads of the threaded bore are preferably beveled. A second bore extends through the depth or thickness of the carrier block body and is located normal to and spaced from the threaded bore.

Abstract: A flight control surface actuator includes a mechanism that enables the actuator translation member to be selectively decoupled from the actuator rotating member. The actuator includes an actuation member, a translation member, an extension member, and a locking member. The actuation member is adapted to receive a drive force and is configured, in response to the drive force, to rotate and cause the translation member to translate. The extension member surrounds at least a portion of the translation member and is configured to be selectively coupled to, and decoupled from, the translation member. The locking member surrounds at least a portion of the extension tube and is movable between a lock position, in which the locking member couples the extension member to the translation member, and a release position, in which the locking member decouples the extension member from the translation member.

Abstract: A quick-releasing linear actuator suitable for electric hospital beds includes a motor, a transmission device, a clutch device and a pulling arm device. With the pulling of the pulling arm of the pulling arm device, a clutch and a clutch base of the clutch device can be disengaged, such that the screw of the transmission device will not be impeded by the worm gear. When a force is exerted to the telescopic rod of the transmission device, the screw can rotate by itself to rapidly lower the telescopic rod, thereby to achieve the rapid releasing of the hospital beds.

Abstract: A spiral gear having a body, a compound nut and a screw on which a keyway is made on the longitudinal direction. The nut has four or more inserts placed in the grooves made in the longitudinal direction and leaning against the inclined surfaces made at different heights in the same direction on the end parts of the bottoms of the grooves. The spiral support with the conical surface placed coaxial in the hole of the body leans against the conical surfaces made on the butt-ends of the inserts from one side and leans from the other side the imitator with the respective conical surface. On the other butt-end of the imitator are two small balls against two inclined spiral surfaces made in the direction of the screw which have the same height, and the spiral disk.

Abstract: A system and method for automatically aligning the threads of a lead screw with the threads of a screw drive mechanism, the screw drive mechanism operating to translate the rotational motion of the lead screw into linear motion to expel the contents of a mounted syringe. The system comprises a driver position sensor for determining the position of the screw drive mechanism along the lead screw and a processor for receiving position signals from the driver position sensor, for determining a requisite rotation of the lead screw to ensure alignment of the two sets of threads, and for effectuating the requisite rotation of the lead screw to achieve that alignment. An automatic calibration routine is included that checks for variances in calibration of the system and if found, updates a conversion factor to restore accuracy. Various sensors are used to monitor the operation of components.

Abstract: A linear stage having a screw-nut assembly is actuated by the rotational motion of the screw. A mechanism, which is an integral part of the nut, quickly disconnects the screw and the nut, allowing rapid positioning of the linear stage in both the forward and reverse direction. The motion of said stage has a resolution given by the thread pitch of the screw and the nut; and a travel only limited by the length of the screw. The quick disconnect screw-nut assembly mechanism described in this invention is achieved by axial preloading said nut and allowing said nut to pivot perpendicular to the axis of said screw. Two or more linear stages having said screw-nut assembly are concatenated with one another to form a multi-axis positioning device.

Abstract: A linear motion device (10) associated to a worm (14) including a body (12) internally provided with a housing seat for partially receiving a worm having a plurality of grooves, a mobile device (52) for temporary engagement in an exposed portion of at least one of the grooves (54) of the worm, and a pressure device (40) including a pneumatic piston for moving the mobile device in contact with at least one of the grooves of the worm.

Abstract: A docking apparatus for printed circuit boards including a cassette housing defining a housing cavity for containing a printed circuit board (PCB) and a linkage mechanism associated with the cassette housing. The linkage mechanism includes a linkage arm pivotally connected to the cassette housing via a pivot and has a first arm pivotally connected to the PCB, a traveler having a threaded bore therethrough connected to a second arm extending from the first arm, a shaft threadedly engaged in the left handed threaded bore through the traveler at a first end defining the shaft, the first end configured to operably transfer axial translation of the shaft to the traveler, and an opposite second end defining the shaft threaded engaged in a right handed threaded bore through a split nut operably secured to the cassette housing.

Abstract: A bracket and nut assembly including a bracket having a first end and second end. The first end includes a first substantially planar portion spaced apart from and positioned substantially parallel to a second substantially planar portion. A third portion interconnects the first and second portions. A first aperture extends through the first portion and a second aperture extends through the second portion. The first and second apertures are axially aligned with one another. A nut includes a substantially cylindrical hollow body having flats, a first end and a second end. A flange radially extends from the first end. The flange is captured between the first portion and the second portion of the bracket such that the nut is operable to translate and rotate relative to the bracket.

Abstract: An assembly comprises a spindle and a moving nut disposed on the spindle. The spindle and the moving nut are made of plastics. At least one of the two components spindle and moving nut being resilient such that the moving nut is prevented from getting stuck on the spindle. There is further proposed an actuator including such assembly.

Abstract: An electrically activated emergency system for a patient bed comprises: an electrically powered linear actuator for driving a back rest of the patient bed from a lowered back rest position to a raised back rest position and operable to permit the back rest to lower from the raised back rest position to the lowered back rest position without being driven by the linear actuator; and, an independent emergency back rest lowering feature comprising an electrical activation means for activating the linear actuator to permit the back rest to lower from the raised back rest position to the lowered back rest position without being driven by the linear actuator, the electrical activation means not requiring continued operator attendance for continued lowering of the back rest.

Abstract: A ball nut has at least one internal bearing race with a first end and second end, and at least one recirculating crossover passage for connecting the first end with the second end of the bearing race to form a continuous recirculating path for a plurality of ball bearings. A method for producing a ball nut includes the steps of forming at least a portion of the ball nut body with a helix passage for receiving a plurality of ball bearings, forming a crossover passage in communication with the helix passage for returning the plurality of ball bearings to an opposite end of the helix passage, and assembling the ball nut body portions to position the helix passage and operable orientation with respect to the crossover passage to define at least one raceway having a single recirculating rotational path for receiving the plurality of ball bearings. The ball nut body can be formed by being drawn, coined, metal injection molded, roll formed, through rolled, stamped and/or overmolded.

Abstract: The present invention teaches a powered door operator for passenger transit vehicles having a drive nut assembly engaging a door hanger bracket substantially connected to a door disposed within an aperture of the vehicle structure. Such drive nut further engaging a drive screw to move a door for covering and uncovering an aperture for ingress and egress of passengers in a wall of a transit vehicle upon rotation of the drive screw enabled by a rotary prime mover. The drive assembly comprises a housing having an internal cavity, at least one drive nut insert having a helix portion substantially identical to the drive screw helix and disposed within said internal cavity, and a retaining clip engaging said at least one drive nut insert for substantial retainment thereof. Retaining clip further provides for simple replacement of such at least one drive nut insert during maintenance cycles thereby substantially eliminating periodic lubrication generally employed with powered door operators of the prior art.

Abstract: Power operated caulking gun having a housing, a cradle extending from the housing for receiving a cartridge of fluent material, a push rod for engagement with a cartridge in the cradle for dispensing the fluent material from the cartridge, a drive shaft extending from the housing and adapted to be received in the chuck of a drive tool, drive means interconnecting the drive shaft and the push rod, and a stabilizer extending from the housing for engagement with an abutment on the barrel of the drive tool to prevent rotation of the caulking gun relative to the drive tool. In some embodiments, the cradle is adapted to hold a cartridge having two tubes of fluent material positioned side-by-side, and the caulking gun includes a second push rod for dispensing material from the second tube in the cartridge.