Abstract: A lifting column includes a drive unit, a lifting tube, and a transmission assembly. The lifting tube includes a first tube, a second tube, a third tube, a fourth tube, and a fifth tube. The transmission assembly includes a first screw rod, a second screw rod, a third screw rod, and a fourth screw rod. The drive unit is in transmission fit with the first screw rod and drives the first screw rod to rotate. A lower end of the second screw rod has a first nut in transmission with the first screw rod, a lower end of the third screw rod has a second nut in transmission with the second screw rod, a lower end of the fourth screw rod has a third nut in transmission with the third screw rod, and a lower end of the first tube has a fourth nut in transmission with the fourth screw rod.

Abstract: A wave energy capture system deployed in water converts mechanical motion induced by waves in the water to electrical energy. A controller of the wave energy capture system receives input regarding real-time wave conditions in a vicinity of the wave energy capture system. The controller applies a control model to the received input to select a value of a control parameter for the wave energy capture system, where the control model includes a model that has been trained using machine learning to take wave condition data as input and to output control parameter values selected based on the wave condition data in order to increase an amount of energy captured by the wave energy capture system. The controller implements the selected value of the control parameter on the wave energy capture system.

Abstract: A self-locking drive and a linear actuator. The self-locking drive disclosed includes a housing and a drive shaft for outputting a driving force, an endcap being provided at an end portion of the housing, a self-locking mechanism configured to apply a self-locking force to the drive shaft being provided in the endcap; the self-locking mechanism includes a friction seat sleeved over the drive shaft and rotatable synchronously with the drive shaft, and a friction ring mounted in the endcap and secured to the endcap, the friction seat being interference-fitted with the friction ring to enable two-way self-locking to the drive shaft.

Abstract: A linear drive has a linear unit for carrying out a linear movement, a motor for the motorized driving of the linear unit, and a drive connection which extends from the motor as far as the linear unit. In order to ensure reliable operation even in the event of a power failure, it is proposed that the linear drive have a centrifugal brake which is rotationally coupled to the drive connection.

Abstract: An operator for controlling electrically adjustable furniture includes a housing and an actuation panel movably supported in the housing to form a cover body. A circuit board is provided in the housing, and a main control unit for detecting an actuation signal is provided on the circuit board. A first switch for generating a first actuation signal and a second switch for generating a second actuation signal are provided between the actuation panel and the main control unit, and a third switch for generating a third actuation signal is provided between a bottom wall of the housing and the main control unit. The main control unit issues a first command when simultaneously detecting the first actuation signal and the second actuation signal, and the main control unit issues a second command when simultaneously detecting the first actuation signal, the second actuation signal, and the third actuation signal.

Abstract: A lifting desk is related to fields of lifting desks. The lifting desk includes a drive device, a gearbox, a desktop, a crossbeam, and a lifting column, the crossbeam being connected to the desktop, the lifting column being connected to the crossbeam, the gearbox including a gear assembly, the drive device being in driving engagement with the gear assembly, the gear assembly being in driving engagement with the lifting column; the lifting desk further includes a retaining plate, the retaining plate being securely connected to the desktop, the gearbox being connected to the retaining plate. The desk offers an advantage that the structure disclosed may enhance assembly precision of the lifting desk and enables lifting control of the desktop.

Abstract: The present disclosure provides a multifunctional hand controller for height-adjustable furniture, and belongs to the technical field of control equipment for electric furniture. The multifunctional hand controller includes a shell. The shell is fixed on the furniture. Switches for controlling the furniture are installed on the shell. The switches include a first switch and a second switch. The first switch is a rotary switch. The rotary switch rotates relative to the shell to generate a first control instruction for controlling the furniture.

Abstract: An ice skate for skating on ice, which ice skate comprises; an upper chassis section comprising a first contact surface having a front end and a rear end, a lower chassis section comprising a second contact surface having a front end and a rear end, and a coupling arrangement comprising a spring back means, which coupling arrangement is arranged to mechanically connect the upper and lower chassis sections. The coupling arrangement is arranged to allow the upper chassis section to pivot relative to the lower chassis section by rolling contact motion between the first and second contact surface such that a momentary contact region (CR) of the first and second contact surfaces moves back and forth between the front and rear ends of the first and second contact surfaces. The spring back means is arranged to urge the momentary contact region (CR) to a neutral position.

Abstract: An ice skate for skating on ice, which comprises; an upper chassis section comprising a first contact surface having a front end and a rear end, a lower chassis section comprising a second contact surface having a front end and a rear end, and a coupling arrangement comprising a spring back means, which coupling arrangement is arranged to mechanically connect the upper and lower chassis sections.

Abstract: A one-way self-locking actuator, including: a housing, a one-way self-locking device, and a motor shaft at least one end of which extends out of the housing; the one-way self-locking device includes a pin rod, and a friction cap which is disposed outside the housing and sleeved over the motor shaft; an arc-shaped groove extending helically about an axial direction of the motor shaft is provided on a side wall of the friction cap; the pin rod rotates synchronously with the motor shaft and is sliding-fitted with the arc-shaped groove; the motor shaft brings the pin rod to rotate such that the friction cap is driven by the pin rod to move axially; the friction cap moves axially to contact the housing, whereby friction self-locking or detachment is enabled.

Abstract: A silicon-based quantum device is provided. The device comprises: a first metallic structure (501); a second metallic structure (502) laterally separated from the first metallic structure; and an L-shaped elongate channel (520) defined by the separation between the first and second metallic structures; wherein the elongate channel has a vertex (505) connecting two elongate parts of the elongate channel. The device further comprises: a third metallic structure (518), mediator gate, positioned in the elongate channel; a fourth metallic structure (531) forming a first barrier gate, arranged at a first end of the third metallic structure; and a fifth metallic structure (532) forming a second barrier gate arranged at a second end of the third metallic structure. The first, second, third, fourth and fifth metallic structures are configured for connection to first, second, third, fourth and fifth electric potentials respectively.

Abstract: A pneumatic lifting table frame includes a transverse beam, at least one column, a pressure sensor that detects a load of the lifting table frame, a controller configured to receive a signal from the pressure sensor, and an adjustable gas spring assembly configured to drive the column to be lifted or lowered. The adjustable gas spring assembly includes an adjustable gas spring body, a gas reservoir, a piston rod assembly, and a drive unit. The adjustable gas spring body is connected to the gas reservoir via a gas pipe. The controller is configured to control the drive unit, the adjustable gas spring body (401) is disposed in one of the column, and the drive unit drives the piston rod assembly to carry out a piston motion in the gas reservoir.

Abstract: Processor elements are disclosed herein. A processor element comprises a silicon layer. The processor element further comprises a dielectric layer disposed upon and forming an interface with the silicon layer. The processor element further comprises a conductive via in contact with the dielectric layer, the conductive via comprising a metallic portion having an interface end closest to the dielectric layer and a distal end. A cross-sectional area of the interface end of the metallic portion of the conductive via is less than or equal to 100 nm by 100 nm. In use, the application of a bias potential to the distal end of the conductive via induces a quantum dot at the interface between the dielectric layer and the silicon layer, the quantum dot for confining one or more electrons or holes in the silicon layer. Methods are also described herein.

Abstract: An electric actuator having a hand-screw release device, including: housing, drive motor, transmission assembly, rotary screw rod and driving nut, and further including: clutch device configured to engage or disengage power transmission between the transmission assembly and the rotary screw rod; a self-locking device configured to produce a friction resistance against the rotary screw rod when the rotary screw rod rotates reversely; and a hand-screw release device including a release rotary knob, the first driving member being connected to the clutch device, the second driving member being configured to connect the self-locking device, and the release rotary knob being turned to present an initial state and a completely released state, wherein in the course of switching from the initial state to the completely released state, the first driving member activates the clutch device to disengage the power connection, and the second driving member activates the release torsion spring to release.

Abstract: A storage system and an access control method thereof are provided. The storage system receives a first I/O request from at least one hypervisor. The first I/O request is used for accessing a first disk file of disk files. The storage system then operates a first I/O operation of a first virtual disk of virtual disks according to the first I/O request since the disk files correspond to the virtual disks. The storage system reads a QoS data of the first disk file and determines a first delay period according to the QoS data. The storage system transmits a first I/O response to the at least one hypervisor after the first delay period.

Abstract: Disclosed is a grease-isolating structure for storing a circuit board, the structure being disposed in an outer tube of a solar actuator, in the outer tube being further provided the circuit board, a through-hole running axially through the outer tube being provided for the outer tube, wherein a cavity for storing the circuit board is provided on a wall of the outer tube, the cavity and the through-hole being isolated from each other. Further disclosed is a solar actuator in which the circuit board storage structure is provided.

Abstract: Disclosed is a filler piece mounting assembly for a lifting column. The lifting column includes a first casing and a second casing sliding in the first casing. The filler piece mounting assembly includes a resilient filler piece and a fixed frame for fixing the resilient filler piece. The resilient filler piece is disposed outside an outer wall of the second casing and axially fixed relative to the first casing. The fixed frame is disposed at a front end of the first casing and moves relative to the first casing. A first inclined surface is disposed on an outside of the resilient filler piece. The fixed frame includes an extrusion part for extruding the first inclined surface, and the extrusion part extrudes the first inclined surface to radially deform the resilient filler piece to adjust a clearance between the resilient filler piece and the second casing.

Abstract: A permanent magnet carrier, which could be a rotor or stator of an electric machine, includes a first non-magnetic ring and a second non-magnetic ring. Between the rings are soft magnetic pole elements. The soft magnetic pole elements each connect to the first and second non-magnetic rings and the soft magnetic pole elements are separated from each other by the first and second non-magnetic rings. Permanent magnets are disposed between the soft magnetic pole elements.

Abstract: The present disclosure provides a method for information storage and a system thereof, which adapts to a data storage system. A monitoring unit is configured to detecting and monitoring operations of a storage node in the data storage system to generate corresponding one and more monitoring data. A recording processor is configured to receiving the one or the plurality of monitoring data, and rendering one or a plurality of logs according to the difference of content of the one or the plurality of monitoring data. The adjustment mechanism is performed according to the stored logs, thereby the amount of large data generated during monitoring is effectively reduced.