151 results about "Leadscrew" patented technology

A surgical kit includes a stapling device and a powered actuation assist detachably couplable to the stapling device. The stapling device includes an anvil half section, a cartridge receiving half section, and a firing assembly including an actuation knob movable along a length of the cartridge receiving half section. The powered actuation assist includes a motor assembly, a lead screw operatively coupled to the motor assembly, a knob connector coupled to the lead screw, a battery pack, and a first switch electrically coupled to the motor to activate the motor. The knob connector is configured to detachably engage the actuation knob of the stapling device to impart axial displacement to the actuation knob. Actuation of the motor assembly imparts rotation to the lead screw, which, in turn, causes axial displacement of the actuation knob of the firing assembly.

A screw jack with a lead screw that disengages from a traveling nut to prevent overdrive directly coupled to an electric motor though a series of planetary gears. A battery adapter mounted on an outer tube of the jack for attachment of a user's selected battery to the motor. A lift accessory with two lifting points, one a hook and the other a channel, bolted to a support bracket attached to an outer tube of the jack. A hanging accessory with toggle clamps at opposite ends of a beam for suspending the jack such as from a roll cage of an ATV.

Wing deployment apparatus and methods are disclosed herein. An example wing deployment apparatus includes a rotary actuator coupled to a torque coupler having a locking key disposed in an opening. The locking key moves between an outer radial position and an inner radial position. A lead screw is rotationally coupled to the torque coupler. The lead screw has a first recess to accept the locking key when the locking key is in the inner radial position. A nut is threadably engaged to the lead screw and includes a second recess to accept the locking key when the locking key is in the outer radial position. The locking key prevents movement of the nut along the axis of rotation when the locking key is in the outer radial position. A wing is operatively coupled to the nut to move the wing to a deployed position.

A lead screw control actuation system. A system according to an embodiment includes a motor configured to rotate a lead screw that is configured to increase torque provided by the motor. The lead screw is coupled to a nut through a threaded opening such that rotation of the lead screw causes the nut to move along a longitudinal axis of the lead screw. The nut includes a slot oriented in a direction perpendicular to the direction of motion of the nut. The system further includes a lever arm including a pin at a first end of the lever arm, the pin configured to slide in the slot of the nut to cause the lever arm to rotate in response to the motion of the nut. A second end of the lever arm is coupled to a canard such that rotation of the lever arm causes the canard to rotate.

A gearbox assembly and surgical instrument including the same. The gearbox assembly includes a drive gear including a round gear and a lead screw such that a rotational input to the round gear rotates the lead screw. A first hub is threadingly engaged about the lead screw such that rotation of the lead screw translates the first hub. A second hub is spaced-apart from the first hub and engaged with a drive rod. A compression spring is disposed between the hubs. When a force acting against the drive rod is below a threshold, the rotational input translates the first hub, compression spring, second hub, and drive rod. When the force is equal to or above the threshold, the rotational input translates the first hub and compresses the compression spring against the second hub to maintain the second hub and drive rod in position.

An aperture assembly for use with a subsurface ejection vessel includes an electromagnet, a first dynamic aperture, a second dynamic aperture, a hollow shaft injection drill bit, a third dynamic aperture, collar perforations, and closed window apertures. The electromagnet actuates a closing of the first dynamic aperture. The electromagnet actuates an opening of the second dynamic aperture. The third dynamic aperture dynamically opens when triggered by a first pre-determined depth achievement counting by the encoder of the lead screw or distance traveled by a platform (505A) triggered by the limit switch that are communicated to the AI robot, the computer, and the PLC. The third dynamic aperture dynamically opens when the camera lens has a second pre-determined depth penetration of the hollow shaft injection drill bit and that the limit switch information is communicated to the computer, or the PLC.

The invention provides an electric C-shaped nail gun which comprises a machine shell, a driver, a transmission module, a driving screw and two clamping pieces, the driver is arranged in the machine shell and can be powered to move, the transmission module is connected with the driver, the driving screw is provided with external threads and is screwed with the transmission module, the external threads are trapezoidal threads, the clamping pieces are arranged on the machine shell in a pivoted mode, and the clamping pieces are connected with the driving module. The driver can drive the guide screw rod through transmission of the transmission module, the guide screw rod moves linearly, the abutting assembly abuts against the two clamping pieces to rotate relative to the machine shell, and therefore the clamping parts of the two clamping pieces get close to each other, and the C-shaped nail is formed in a clamping and pressing mode. According to the C-type nail gun, the torque provided by the driver is converted into linear movement of the guide screw through the trapezoidal threads, the transmission efficiency can be improved, and the overall power density of the C-type nail gun is increased.

An electro-mechanical brake apparatus and a vehicle. The electro-mechanical brake apparatus includes a brake caliper and a lead screw. The brake caliper is configured to be fastened to a brake motor and accommodate the lead screw. The lead screw is configured to be connected to the brake motor in a transmission manner and drive two friction plates. The brake caliper includes two mounting surfaces. Each mounting surface is used for mounting one friction plate. The lead screw includes two end faces. At least one of the one end face or the other mounting surface includes an accommodation groove. Each accommodation groove is configured to accommodate a part of a pressure sensor. Each pressure sensor is configured to detect pressure against one friction plate during braking. The electro-mechanical brake apparatus can reduce an axial size of the electro-mechanical brake apparatus.

A system for increasing biological activity within a patient includes a housing, a drive carried within the housing, an indexing contour carried by the housing and configured to substantially stabilize the housing in relation to a transport device base of a transport device configured to move a growth stimulator in relation to a bone of a subject, a locking portion configured to releasably lock the housing to the transport device base, a rotatable mating tool carried by the housing, wherein the drive is configured to cause the rotatable mating tool to rotate, and wherein the rotatable mating tool is configured to be rotationally coupled to a screw drive of a leadscrew of the transport device when the housing is stabilized with the transport device base via the indexing contour and is locked to the transport device base via the locking portion, and a control unit configured to output a control signal configured to direct the drive to rotate the rotatable mating tool.

A transport device for increasing biological activity within a patient includes a base including a first end, a second end, an upper surface located between the first end and the second end, and a lower surface located between the first end and the second end, a base anchor configured to statically couple the base to a first portion of a bone of a subject, a translatable anchor configured to engage a growth stimulator, a leadscrew dynamically coupling the base to the translatable anchor, wherein the leadscrew is configured to rotate about a leadscrew axis while substantially maintaining its longitudinal position along the leadscrew axis in relation to the base, such that the growth stimulator, when engaged with the translatable anchor, is capable of independent movement in relation to the base along a stimulation axis that includes at least some transverse displacement with respect to the bone when the base is coupled to the bone via the base anchor, and a screw drive rotatably coupled to the leadscrew and configured to couple to a rotatable mating tool that is configured to rotate the leadscrew via the screw drive.

A transport device for increasing biological activity within a patient includes a base including a first end, a second end, an upper surface located between the first end and the second end, and a lower surface located between the first end and the second end, a base anchor configured to statically couple the base to a first portion of a bone of a subject, a translatable anchor configured to engage a growth stimulator, a leadscrew dynamically coupling the base to the translatable anchor, wherein the leadscrew is configured to rotate about a leadscrew axis while substantially maintaining its longitudinal position along the leadscrew axis in relation to the base, such that the growth stimulator, when engaged with the translatable anchor, is capable of independent movement in relation to the base along a stimulation axis that includes at least some transverse displacement with respect to the bone when the base is coupled to the bone via the base anchor, and a screw drive rotatably coupled to the leadscrew and configured to couple to a rotatable mating tool that is configured to rotate the leadscrew via the screw drive.

A bidirectional spiral mixing blender having a bidirectional leadscrew, comprising: a shaft configured to drive blades on the shaft to rotate; a first breaking and conveying blade set arranged from one end to the middle of the shaft; and a second breaking and conveying blade set arranged from the other end to the middle of the shaft. The spiral direction of the first breaking and conveying blade set is opposite to that of the second breaking and conveying blade set. The first breaking and conveying blade set and the second breaking and conveying blade set are used for breaking up and conveying powder. The first breaking and conveying blade set and the second breaking and conveying blade set each comprise first arc-shaped blades, second arc-shaped blades, and a spiral blade. The first arc-shaped blades, the spiral blade and the second arc-shaped blades are not connected. When rotating, the first arc-shaped blades and the second arc-shaped blades continuously break up and crush the powder efficiently, while pushing the powder toward the middle of the shaft at a low speed, thereby flipping and stirring the powder to prevent agglomeration.

A brake module for an electric door drive device according to an exemplary embodiment of the present invention comprises a worm gear nut arranged on a leadscrew in a coaxial relationship to the leadscrew and configured to rotate with the rotary motion of a worm gear while engaged with the worm gear, which is connected to a motor shaft to linearly move the leadscrew, and a brake configured to exert a predetermined resistance force with respect to the rotary motion of the worm gear nut. The brake is configured to be arranged on the worm gear nut in a coaxial relationship to the worm gear nut.

A gearbox assembly for use with a surgical instrument includes a drive gear configured to receive a rotational input, a first output gear configured to receive a rotational input from the drive gear, and a second output gear configured to receive a rotational input from the first output gear. The first output gear includes a first lead screw coupled to the first output gear such that the rotational input received by the first output gear rotates the first lead screw, and thereby translates a first nut threadingly engaged about the first lead screw along the first lead screw. The second output gear includes a second lead screw coupled to the second output gear such that the rotational input received by the second output gear rotates the second lead screw, and thereby translates a second nut threadingly engaged about the second lead screw along the second lead screw.

A lead screw (1) for a threaded drive (10), in particular a ball screw drive, comprises an inner sleeve (2) and a sleeve-shaped outer part (3) fixedly connected to the inner sleeve and having a screw thread (5), in which the inner sleeve (2) and the outer part (3) are made of different materials. The inner sleeve (2) is shaped in the outer part (3) in a form-locked manner such that the inner sleeve replicates the spindle thread (5).

A surgical tool includes a handle having opposing first and second ends, a lead screw and a spline are rotatably coupled to and extend between the opposing ends. The spline is arranged a distance from the lead screw such that the lead screw assumes torsional loading generated by the spline. Another surgical tool includes first and second splines with a first activating mechanism coupled to the first spline and a second activating mechanism coupled to the second spline. Torsional loading generated by the first and second splines to operate the first and second activating mechanisms are balanced by rotating the first and second splines in opposite directions. A method of minimizing torsional loads on components of a robotic surgical tool includes actuating the surgical tool and assuming a torsional force acting on a carriage of the surgical tool with a load balancing member included in the surgical tool.

The utility model discloses a positioning device for an elastic sheet capacitor switch, which belongs to the technical field of switches, and is characterized by comprising a guide rail, an adjusting mechanism and a positioning mechanism, the guide rail can limit the adjusting mechanism and guide the movement of the positioning mechanism by arranging the guide rail and the adjusting mechanism, so that the positioning mechanism can be conveniently positioned. A guide frame can be matched with a positioning magnet, movement of a positioning mechanism is positioned through magnetic force, an adjusting handle can be matched with a positioning rotating ring, a user rotates the adjusting handle, a guide screw can be driven to rotate along the positioning rotating ring, and a positioning suction cup is driven to move when the guide screw rotates; and therefore, the positioning suction cup can ascend and descend at the positioning rotating ring along the guide sliding rod, the positioning suction cup moves along the guide screw rod to gradually generate negative pressure, and the stability of the positioning suction cup when the positioning suction cup is adsorbed to the surface of equipment is improved.

A surgical kit includes a stapling device and a powered actuation assist detachably couplable to the stapling device. The stapling device includes an anvil half section, a cartridge receiving half section, and a firing assembly including an actuation knob movable along a length of the cartridge receiving half section. The powered actuation assist includes a motor assembly, a lead screw operatively coupled to the motor assembly, a knob connector coupled to the lead screw, a battery pack, and a first switch electrically coupled to the motor to activate the motor. The knob connector is configured to detachably engage the actuation knob of the stapling device to impart axial displacement to the actuation knob. Actuation of the motor assembly imparts rotation to the lead screw, which, in turn, causes axial displacement of the actuation knob of the firing assembly.

A transfer device comfortably picks up a patient from a bed, then moves to the side of the bed for offloading the patient onto an accessory such as a chair. The bed has rails which act as tracks to engage a roller base of the transfer device, and lead screws for automating sideways movement of the device. The device uses a lifting system having strap storage at the head of the frame and web storage at the foot, the storage units vertically movable along support posts to multiple levels including a stowed level near the bottom and a clearance level near the top. The web storage contains an extendable dual web with a roller nose assembly, and the strap storage contains retractable pull straps having ends secured to the roller nose assembly. The transfer device has a compact design allowing the lifting system to be hidden underneath the bed.

The utility model discloses a lead screw of a servo motor for adjusting a vehicle-mounted AR‑HUD reflector, comprising a threaded portion, one end of the threaded portion is provided with an end portion, a lubrication component is installed inside the threaded portion and the end portion, the lubrication component comprises a mounting groove provided on an outer wall on one side of the end portion, a plurality of oil outlet holes distributed at equal distances are provided on a circumferential outer wall of the threaded portion, and the plurality of oil outlet holes are all connected with the inside of the mounting groove, a sealing cover is provided on an outer wall on one side of the end portion, a magnetic ring is provided on an outer wall on the other side of the sealing cover, an annular groove adapted to the magnetic ring is provided on an outer wall on one side of the end portion, a sponge column is slidably inserted in the inside of the mounting groove, and a liquid injection groove is provided in the middle of the sponge column. By arranging the lubrication component, the utility model can continuously lubricate the lead screw for a long time, ensure that its transmission process is convenient enough, and thus save the work of frequently adding lubricating oil.

Embodiments disclosed herein provide a compression system including a compression plate, a linkage assembly, and a drive assembly. The squeeze plate is configured to engage with the fluid bag. The linkage assembly includes a plurality of brackets, each bracket coupled to a plurality of linkage sets, where actuation of the linkage assembly translates the squeeze plate laterally. The drive assembly includes: a lead screw disposed through each of the plurality of brackets; an actuator configured to rotate the lead screw to actuate the drive assembly; and a nut assembly coupled to the lead screw and at least one of the plurality of brackets, where the nut assembly is configured to provide a biasing force to maintain a target pressure range on the fluid bag upon failure of the actuator.

One aspect of the disclosure relates to an extramedullary distraction and compression system. The extramedullary distraction system includes: a housing configured to be attached to a bone at a first location, the housing having a magnet and a lead screw positioned therein, wherein the lead screw is coupled to the magnet such that rotation of the magnet causes rotation of the lead screw, at least one retainer clip disposed around the lead screw; a rod configured to be attached to the bone at a second location and configured to interact with the lead screw such that, upon rotation of the lead screw, the rod distracts or contracts relative to the housing.

The present invention discloses a vending machine, which includes two horizontal lead screws, a vertical lead screw, a first motor, a second motor, a rack, a delivery cup, and a delivery area. The first motor and the second motor drive the horizontal lead screw and the vertical lead screw respectively. The vertical lead screw moves horizontally along the horizontal lead screw. The rack contains products and has a movable door to hold the products on the rack. The delivery cup moves vertically along the vertical lead screw and has a solenoid and a plunger. The solenoid actuates the plunger, which opens the door to dispense the product onto the delivery cup. The outer door of the delivery area isolates the delivery area from the outside of the vending machine when closed, and enables access to the product from the outside of the vending machine when open. Mechanical interaction between the delivery cup and the delivery area opens the outer door.

A check shim style electronic modal base valve is disclosed. The check shim style electronic modal base valve includes a motive component, a controller communicatively coupled with the motive component, and a control valve having a lead screw is coupled with the motive component. The controller is configured to control an operation of the motive component, wherein a movement of the motive component is configured to cause the control valve to adjust a flow rate for a flow path through the check shim style electronic modal base valve.

The present invention provides a linkage swing head structure, including: a base, a drive mechanism and a spindle. The drive mechanism includes: a power mechanism, a connecting rod mechanism and a lead screw. An end of the spindle is fixed with a cutter, and the spindle is fixed on an end of the connecting rod mechanism. An end of the connecting rod mechanism fixed with the spindle is sleeved on a support bearing, the connecting rod mechanism can rotate around the support bearing, the support bearing is fixed on the base, and the other end of the connecting rod mechanism is movably connected to the lead screw. An output end of the power mechanism is connected to an end of the lead screw. The connecting rod mechanism adjusts the rotation angle of the spindle by sliding on the lead screw. The drive mechanism of the present invention is far away from the spindle, and the interference range thereof to the spindle is small. The spindle can be automatically and continuously indexed, and can also perform linkage machining with small cutting amount, and thus, when the cutter rotates by the same angle, the volume of the device is reduced; the structure is simple and the manufacturing cost is low.

A small form factor aircraft comprising: a body comprising an internal volume; at least one motor disposed within the internal volume; at least one lead screw driven by the at least one motor; at least one collar disposed at least partially within the internal volume of the body; at least one pair of wings, each wing being rotatably attached to the collar adjacent a forward or rear edge; at least one coupler, each coupler being rotatably coupled to a pair of adjacent wings, the coupler comprising a threaded, central section configured to engage with the at least one lead screw such that rotation of the at least one lead screw results in axial translation of the at least one coupler within and relative to the body; and a controller configured to control the at least one motor.

The present application provides a vehicle door actuating mechanism, including a housing, a driving assembly, a limiting member, a spherical nut and a leadscrew, where the driving assembly includes a driving member, a worm and a worm meshing member all arranged in the housing, the worm is connected to an output shaft of the driving member and meshes with the worm meshing member, and the worm meshing member forms a first cavity; the spherical nut has internal thread; and the leadscrew has external thread engaging with the internal thread, one end of the leadscrew is connected to a vehicle door, and the leadscrew enables the spherical nut to swing while moving along its axis. The vehicle door actuating mechanism of the present application is a direct-drive actuating mechanism, thereby greatly reducing the number of required parts, and accordingly reducing the size of the actuating mechanism and reducing the cost. In addition, matched structures are directly formed on corresponding components, achieving convenient assembly, stable operation, and low noise.

A lead screw actuator assembly includes: a lead screw configured to rotate about a rotational axis; a worm gear coupled to the lead screw for rotating with the lead screw; a bearing coupled to the lead screw; and a multi-part housing. The multi-part housing includes: a first portion at least partially defining a first cylindrical cavity for housing a rotating spindle of a motor, and wherein the first portion at least partially defines a second cylindrical cavity extending along the rotational axis; and a second portion further defining the second cylindrical cavity, wherein the worm gear and the bearing are positioned in the second cylindrical cavity.