87 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.

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.

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 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 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.

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.

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.

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.

Aspects of the present invention relate to an actuator (101) for a heavy vehicle foundation brake. The actuator (101) has a housing (111) having an outboard end, the actuator housing (111) being configured to be fixable to the foundation brake at the outboard end, and a lead screw assembly (126). The lead screw assembly (126) comprises a lead screw housing and a lead screw configured to translate relative to the lead screw housing along an axis (122), the lead screw being configured to actuate an output pushrod in order to interface with the foundation brake. The actuator (101) also includes a first anti-ejection feature arranged to limit the maximum relative movement of the lead screw and the lead screw housing in the axial direction.

An apparatus for moving a seat rail for a vehicle includes a casing, a lead nut mounted in the casing and screw-coupled to a lead screw configured to penetrate the casing, a worm wheel having first engagement portions provided on one surface of the worm wheel, and a clutch drum configured such that second engagement portions configured to engage with the first engagement portions are provided on one surface of the clutch drum, and keys provided on an inner-diameter portion of the clutch drum are inserted into key grooves provided in the outer-diameter portion of the lead nut.

Device for detecting the displacement of a leadscrew in a roller screw motor and a robot roller screw motor. The present invention relates to a device for detecting the displacement of a leadscrew in a roller screw motor and a robot roller screw motor. The roller screw motor comprises a motor rotor (1) and a motor leadscrew (6). The linear motion of the motor leadscrew (6) is driven by the rotation of the motor rotor (1). The detection device comprises: a first gear (2), a second gear (4), a first magnetic encoder (3), and a second magnetic encoder (5). The first gear (2) is fixedly connected to the end of the motor rotor (1); the second gear (4) is mounted on the motor housing. The second gear (4) and the first gear (2) mesh. Figure to be published with the abstract: Figure 1

A park lock system 100 for a vehicle (1 fig. 1) comprising: a lead screw 102, a flange 104 extending radially outwardly from the lead screw, an actuation device 106 in threaded engagement with the lea

The present invention relates to a pump device for pushing a metered quantity of a stored volume of a fluid medicament into a patient, comprising: a drive motor including a rotational output rotating about a motor axis when energized; a piston receivable within a reservoir including a reservoir axis and having an interior space in which the volume of the medicament is receivable and an outlet through which the metered quantity is expellable; a leadscrew which is rendered non-rotatable and is affixed to the piston; a leadscrew advancement element which is threadably engageable with the leadscrew and substantially fixed with respect to movement along the reservoir axis, wherein rotation of the leadscrew advancement element imparts movement of the piston along said reservoir axis; and a mechanism operable to impart rotation to the leadscrew advancement element created by the drive motor.

Aspects of the present invention relate to an actuator (101) for a heavy vehicle foundation brake. The actuator (101) comprises an actuator housing (111) having an outboard end, the actuator housing (111) being configured to be fixable to the foundation brake at the outboard end, and a lead screw assembly (126). The lead screw assembly (126) includes a lead screw housing configured to be selectively rotated by a torque source, and a lead screw in communication with the lead screw housing. The lead screw is configured to translate relative to the lead screw housing along an axis (122) when the lead screw housing is rotated, to actuate an output pushrod in order to interface with the foundation brake. The actuator (101) also comprises a first anti-rotation feature arranged to inhibit relative rotational movement of the lead screw and the actuator housing (111).

A vibration absorption apparatus for a head-up display driving module is provided. The vibration absorption apparatus includes: a housing; a motor disposed on an end portion of the housing via a motor mount; a lead screw abutting against a central area of the housing, the lead screw extending from and coupled to the axis of rotation of the motor; a lead screw bracket to fix the lead screw; a link to lift or lower the lead screw based on a driving force of the motor; a flexible coupling to connect the axis of rotation of the motor and the lead screw; heterogeneous spring members coupled to the flexible coupling to isolate torsional vibrations of the flexible coupling; and a cantilever type dynamic vibration absorber disposed between the motor mount and the lead screw bracket, the cantilever type dynamic vibration absorber to absorb and damp vibration produced by the motor.