981 results about "Linear actuator" patented technology

A recliner chair, love seat, or sofa comprises a backrest, a seat, a footrest, and pairs of symmetrical, oppositely disposed linkage members for moving the backrest between upright and reclined positions, and for moving the footrest between retracted and extended positions. A protective cover is fixedly attached to the footrest such that opposite sides of forward portions of the pairs of symmetrical, oppositely disposed linkage members are covered so as to prevent parts of young children or pets from being caught within the forward portions of the pairs of symmetrical, oppositely disposed linkage members as the pairs of symmetrical, oppositely disposed linkage members are moving the footrest between its retracted and extended positions. In addition, a single linear actuator is utilized to move both the backrest between its upright and inclined positions, and to move the footrest between its retracted and extended positions.

A two-motor lift and recline system for a powered chair comprises a base, at least one footrest / ottoman support bracket for mounting and supporting a footrest or ottoman thereon, at least one seat rail for mounting and supporting a seat thereon, at least one backrest support bracket for mounting and supporting a backrest thereon, a first linear actuator mounted upon the base and operatively connected to the at least one footrest / ottoman support bracket for moving the at least one footrest / ottoman support bracket between extended and retracted positions, and a second linear actuator mounted upon the at least one seat rail and operatively connected to the at least one backrest support bracket for moving the at least one backrest support bracket between fully upright and fully reclined positions.

A positive drive differential assembly including a differential with an input pinion configured to operably engage with a drive shaft so as to permit the drive shaft to rotate the pinion. A bi-directional overrunning clutch assembly is configured to transmit torque between the pinion and two drive axle segments. A pinion disconnect assembly is provided for controlling transmission of rotation to the pinion and including a rotary coupler. A linear actuator is connected to the rotary coupler and configured to translate the rotary coupler between connected and disconnected positions.

A new and improved powered chair comprises a chair frame, a backrest assembly, a seat assembly, a footrest assembly, a linkage system, and a linear actuator operatively connected, by the linkage system, to the backrest assembly, the seat assembly, and the footrest assembly for actuating the backrest assembly, the seat assembly, and the footrest assembly between various positions. The seat assembly comprises a seat plate having a substantially V or L-shaped configuration wherein a rearward leg of the V or L-shaped seat plate has a distorted or elongated N or Z-shaped configuration which includes a central, substantially horizontally extending section that, along with the seat plate, can accommodate an enlarged chair seat for, in turn, accommodating large or tall chair users.

The present disclosure is directed to a multifunctional tailgate door and cargo load system that includes a multidirectional bumper apparatus with adaptable tow hitch receiver. The multifunctional tailgate door is adjacent to a cargo bed area having a rail system attached to the multifunctional tailgate door. The rail system having a linear actuator includes a rotary actuator hinge that enables the multifunctional tailgate door to function in a first direction and in a second direction. The multidirectional bumper apparatus is operable in a first direction and in a second direction, and may work in conjunction with the multifunctional tailgate door. The multifunctional tailgate door has at least one anchor that works in conjunction with the cargo load system. The cargo load system includes a plurality of ports in a rear cargo floor surface having a plurality of winches and at least one motor for securing a cargo load.

A removeable vehicle hardtop lift apparatus is described which includes a lower platform, an upper platform and a linear actuator there-between. The upper platform may have adjustable supports, The linear actuator may be configured to move the upper platform linearly. The linear actuator may include a drive mechanism with a hand crank that is operable to cause the linear actuator to raise and lower the upper platform.

A grease filling method for a ball screw device includes the steps of covering an outer periphery of a screw shaft protruding from one end portion of a nut with a covering member, supplying grease to a portion between a nut inner peripheral surface on one end portion side of the nut and the screw shaft, inserting the protruding screw shaft into a nut inner side while being covered with the covering member, bringing a tip of the covering member in an insertion direction closer to an end portion of an infinite circulation path on the one end portion side of the nut, and sending the grease supplied to the nut inner side to a region of the infinite circulation path, pulling out the covering member together with the screw shaft from the one end portion of the nut, and taking out the covering member from the screw shaft.

The invention discloses continuous melt impregnation equipment based on dynamic pressure regulation, which comprises a rack, a fiber band cleaning mechanism and an impregnation mechanism are arranged in the rack, the fiber band cleaning mechanism comprises a driving assembly and two height adjusting assemblies, and the impregnation mechanism comprises a melt bath tank used for accommodating matrix resin in a molten state, the device comprises at least one heating device and at least one resin temperature sensor. The invention relates to the technical field of fiber compounding. According to the continuous melt impregnation equipment based on dynamic pressure adjustment, a precise servo linear actuator is combined with a force sensor and a displacement sensor, so that an impregnation pressure adjusting mechanism with high response and high precision is formed. The mechanism can adjust a roller gap with micron-level precision and respond to a control instruction with millisecond-level response speed, so that the real-time performance and accuracy of impregnation pressure adjustment are ensured, and the system can change according to different fiber bundle characteristics and resin viscosity.

An adjustable bed base has a stationary frame and a stationary seat platform raised above the stationary frame via a riser. An articulating platform includes three platforms, head and foot platforms being hinged to the stationary seat platform. Front and rear linear actuators articulate the deck such that the head and foot platforms decline relative to the stationary seat platform when the linear actuators are retracted. The head and foot platforms may be inclined when the linear actuators are extended. In some configurations, all three platforms may be co-planar. The raised seat platform of the articulated platform facilitates those who sleep face down.

A method of operating a robot includes operating a robot that includes a body assembly that includes a frame formed of at least one body joint assembly, and at least one pair of joint linear actuators that form the at least one body joint. The method further includes controlling the at least one pair of joint linear actuators to operate in combination to adjust the at least one body joint assembly in two degrees of freedom through differential linear actuation.

The invention relates to the technical field of precise positioning control, in particular to a two-degree-of-freedom large-stroke motion platform applied to wafer detection, which comprises a base platform and a load platform surface, the top surface of the base platform is provided with a linear motion platform and a rotary motion platform which are coaxially arranged, the linear motion platform is used for driving the load platform surface to do lifting motion, and the rotary motion platform is used for driving the load platform surface to do rotating motion. The rotary motion table is used for driving the linear motion table and the load table top to do circular motion, and the linear motion table comprises a linear actuator, an air floatation guide assembly, a first feedback device and a plate spring. The integrated design is adopted, the Z shaft and the Rz shaft are coaxially arranged and share the same air floatation guide assembly, the number of parts is effectively reduced, the axial space is compressed, the structure is more compact, the size of equipment is reduced, the self weight and the assembly difficulty are reduced, non-mechanical-friction guide is achieved, and the influence of friction on precision is avoided; besides, the plate springs distributed in a single layer achieve flexible decoupling through the axial and radial rigidity difference of the plate springs, motion crosstalk is restrained, and the dynamic response speed can be increased without a complex algorithm.

The invention relates to a clamping device and method for deburring of solar new energy vehicle plate stamping parts, and belongs to the technical field of deburring machining and clamping of solar new energy vehicle plate stamping parts. The global contour scanning mechanism is fixedly mounted on the base and is used for acquiring global contour data of the stamping part; the reference positioning mechanism is fixedly mounted on the mounting plane and is used for initially positioning the stamping part; the multiple cooperative supporting and clamping units are distributed on the mounting plane in an array mode, each cooperative supporting and clamping unit comprises an electric linear actuator and a sensing head fixed to the top end of the electric linear actuator, and a pressure sensor and a micro accelerometer are integrated in each sensing head; the flexible contact pad at the top of the sensing head is made of elastic materials such as nylon or polyurethane, so that the surface of a workpiece can be prevented from being scratched or indented, and supporting force is uniformly transmitted.

The invention discloses a high-thrust high-reliability linear steering engine transmission system and an eVTOL aircraft, and the transmission system comprises an output shaft which is provided with a center hole, and the inner side wall of the center hole is provided with a threaded section; the transmission assembly is mounted in the center hole and is in threaded connection with the threaded section; the input shaft penetrates through the transmission assembly and is in transmission connection with the transmission assembly; the input shaft rotates to drive the transmission assembly and the output shaft to axially move; the driving structure drives the input shaft to rotate; the gear assembly is in transmission connection with the driving structure and the input shaft; the position detection structure comprises a sliding block and a sliding rail parallel to the output shaft, and the sliding block is installed on the sliding rail in a sliding mode and connected with the output shaft; the output shaft axially moves to drive the sliding block to move along the sliding rail; the driving structure comprises a first driving piece and a second driving piece, and one of the first driving piece and the second driving piece is selected to be connected with the gear assembly. The transmission system is large in output force and torque and high in reliability, and the displacement recognition precision and reliability of the output shaft are high.

In order to secure a door in a locked position without a key, such as to resist a forced entry through the door, a removable, non-intrusive, remotely-controlled door locking apparatus is provided, which includes a rear plate for attachment against a surface of a door using an adhesive substance, a flange that extends from the rear plate under the door, and a cover for enclosing components on the rear plate. A DC-powered linear actuator connected to the rear plate and at least one electronics module configured to communicate wirelessly is within the cover. A foot of the actuator is configured to be extended in a lock state against a floor surface to secure the door or retracted in an unlock state, based on either a wireless signal received from a remote smart device or the state of a manual switch located on apparatus to control the actuator.

Systems and methods include a tilt device for an aircraft vehicle. The tilt device is configured to rotate a rotor assembly between first and second positions. The tilt device comprises a linear actuator disposed within an aircraft fairing; a sleeve having a slot defined therein; and a piston coupled to the linear actuator configured to translate axially within the sleeve. A method includes actuating the linear actuator to translate the piston, wherein the rotor assembly is coupled to an end of the piston and comprises a motor and one or more rotor blades. The method further includes rotating the piston within the sleeve as the piston translates axially along the sleeve via a pin disposed within a slot defined in the sleeve, wherein the pin extends from the piston and through the slot. The method further includes actuating the motor to operate the one or more rotor blades.

Generally described, one or more aspects of the present disclosure relate to methods, systems, and devices related to a powder dispensing system, including a pair of calender rolls, a first conical hopper and a second conical hopper positioned above the pair of calender rolls, each hopper having a first temperature controlled fluidized section, a first flow control system in fluidic connection with the first temperature controlled fluidized section, and a second flow control system in fluidic connection with the second temperature controlled fluidized section, a vertical linear actuator configured to adjust a distance between the first conical hopper, the second conical hopper and the pair of calender rolls, and a horizontal linear actuator positioned between the first conical hopper and the second conical hopper.

Systems and methods are disclosed herein for performing a milling operation within a wellbore in an oil-and-gas setting. An example system can include a milling tool, which can include a cutting head, a linear actuator configured to advance the cutting head, and a linear displacement measurement sensor associated with the linear actuator. The sensor can be configured to measure linear displacement of the linear actuator. The system can also include a cable to lower the milling tool, a control unit that receives data from the sensor, and a display device that displays a visualization of the data from the sensor. The control unit can analyze the data to determine a location of a milling target, a status of the milling operation, and undesirable milling conditions down hole. The control unit can perform a remedial action, such as by turning on a pump to remove debris from the wellbore.

A system for applying eyelashes, the system including a flexible printed circuit board (PCB) substrate, a motor base located under the flexible PCB substrate, and plurality of linear actuators coupled to the motor base, wherein the plurality of linear actuators is configured to adjust the flexible PCB substrate. Further, a method of applying an eyelash, including positioning one or more micro-robots onto a flexible PCB substrate, adjusting a pitch, yaw, roll, or a combination thereof of the one or more micro-robots with plurality of linear actuators under the flexible PCB substrate, and applying the eyelash with the one or more micro-robots.

An aircraft wing assembly (31) is disclosed. The aircraft wing assembly (31) comprises a wing tip device (11) rotatable about a hinge axis (H) between a flight configuration and a ground configuration and a wing tip device actuation system (20) comprising a bell crank (21) and a linear actuator (23). The bell crank (21) is rotatably mounted to the aircraft wing assembly (31) and is rotatable about a bell crank axis (C) which is offset from the hinge axis (H). The linear actuator (23) is operable to rotate the bell crank (21) about the bell crank axis (C) to thereby move the wing tip device (11) about the hinge axis (H), between the flight configuration and the ground configuration.

A portable stand includes a rigid frame portion, an actuator portion synchronously coupled to a transfer shaft, a plurality of rotatable leg assemblies, a plurality of transfer shaft pulleys corresponding to the respective leg assemblies, and a plurality of leg flexible connectors synchronously coupling the respective leg assemblies to the transfer shaft through the transfer shaft pulleys. A portable stand may include a linear actuator coupled to a transfer shaft by a leg pull cam, and the transfer shaft synchronously coupled to a plurality of rotatable leg assemblies by a plurality of corresponding transfer shaft pulleys acting on corresponding flexible leg connectors.

An apparatus for interconnecting a vehicle charging connector with a charging port of a vehicle wherein a latch arm is slidably mounted in the charging connector to slide toward and away from the charging port and toward and into an opening in the charging port. A tip portion is positioned on the latch arm so as to be insertable downwardly into a cavity formed in an interior surface of the opening of the charging port and a linear actuator is configured to drive the latch arm towards and away from the charging connector. In an illustrative embodiment, the charging connector comprises part of a robot configured to move the tip of the latch arm downwardly into the cavity in the opening of the charging port to enable pulling the charging connector and charging port together to establish electrical contact.

The utility model provides a bottom die trolley which comprises a trolley frame, the trolley frame comprises an upper platform, a bottom platform and a plurality of supporting legs connected between the upper platform and the bottom platform, the supporting legs are hinged to the upper platform and the bottom platform, the length of each supporting leg can be driven by a linear actuator to change, and the linear actuator is connected with the bottom platform. The upper platform is used for bearing the matching section, the multiple sets of supporting legs are arranged to be hinged to the upper platform and the lower platform, the linear actuators change the length of the supporting legs, adjustment is convenient according to the length change of the linear actuators corresponding to the supporting legs, and the precision is high.

A lift for a hitch mounted cargo carrier has a linear actuator having fixed and moveable portion. A drive extends and retracts the moveable portion relative to the fixed portion along an axis of the linear actuator. A hitch mount is secured relative to the fixed portion that is sized to be received by a hitch receiver of a vehicle such that the axis is vertically oriented and the moveable portion extends from a bottom end of the fixed portion. A moveable hitch receiver is secured to a bottom end of the moveable portion, the moveable hitch receiver being positioned such that the receiver traverses the axis. The hitch mount and the moveable hitch receiver extend substantially perpendicularly to the axis and the hitch mount extends substantially anti-parallel to the moveable hitch receiver and on an opposite side of the linear actuator.

A method includes in a first mode of operation, controlling a front electric linear actuator and a rear electric linear actuator of a lift device such that both a front axle assembly and a rear axle assembly are permitted to rotate relative to a chassis about a longitudinal axis through a first range of motion, and in a second mode of operation, controlling the front electric linear actuator and the rear electric linear actuator to limit rotation of both the front axle assembly and the rear axle assembly relative to the chassis to a second range of motion smaller than the first range of motion.

A storage or transport rack apparatus for a pickup truck bed is adjustable between a deployed or raised configuration extending upwardly above the truck bed rails and a stowage or lowered configuration positioned at or below the level of the pickup truck bed rails. The storage or transport rack for a pickup truck bed may be raised or lowered using linear actuators hidden below the bottom wall of the truck bed.

A cutting assembly may be configured to be mounted to a robotic lawnmower to cut vegetation. The cutting assembly includes a mounting unit configured to be mounted to a lawnmower body of the robotic lawnmower, a cutting arrangement including a cutting unit, a link arm arrangement connecting the cutting arrangement to the mounting unit, and a cutting height adjustment mechanism. The link arm arrangement includes a number of link arms each pivotally attached to the mounting unit and to the cutting arrangement around pivot axes. The cutting height adjustment mechanism includes an actuator arm slidably received in an aperture of the cutting arrangement and a linear actuator configured to move the actuator arm relative to the mounting unit.

A scoop for a tidying robot including a scoop base, scoop back, scoop bottom, and scoop bottom linear actuator. The scoop bottom is expandable and includes at least one side that can be extended or retracted using the scoop bottom linear actuator. The scoop can also include foldable walls, a scoop lip, and a front pushing linear actuator to push the scoop bottom forward. The method for using the scoop includes extending the scoop bottom outwards or forwards, loading objects, transporting and unloading the objects, and retracting the scoop bottom.

A powered rocking or gliding furniture piece includes a base frame and a movable furniture assembly. The movable furniture assembly of the powered rocking or gliding furniture piece is configured to rock or glide about the base frame. A powered motor or linear actuator is affixed to the base frame. A connecting member is on the movable furniture assembly of the powered rocking or gliding furniture piece. Linkage is connected between the powered motor or linear actuator affixed to the base frame and the connecting member on the movable furniture assembly of the powered rocking or gliding furniture piece. The linkage is configured to translate movement from the powered motor or linear actuator to the movable furniture assembly for rocking or gliding the movable furniture assembly about the base frame.

This invention provides a valve actuation device and a valve assembly for controlling fluid flow. The valve actuation device comprises: a linear actuator including a shaft operatively coupled to an electric motor; a fluid-sealed enclosure housing the shaft and a rotor of the electric motor; a control unit located outside the enclosure; and a housing containing the linear actuator, the enclosure, and the control unit. According to the invention, the housing has a heat shield between the enclosure and the control unit. The heat shield may have a wall portion molded or mounted on the inner side of the housing, wherein the wall portion may circumferentially surround a front closed end of the enclosure.