510results about How to "Restraint torsion" patented technology

The present invention relates to an unmanned flying vehicle using a PCB including a main board controlling power supply and flying operation, a motor rotating a propeller by changing electric energy into mechanical energy, a PCB frame changing a signal from a remote controller and connecting the main board with the motor, a propeller generating an impellent force by from rotation by the motor, a receiver receiving a control signal of the remote controller, and a remote controller controlling a motor rotation speed of a quadrotor and direction change, and accordingly, the structure of the unmanned flying vehicle can be simplified so that the flying vehicle can be down-sized and light-weighted, and assemblability can be improved.

In herringbone seats of the prior art, armrests on the closed angle side form an obstacle for the passengers in the seat in case of a shock, since the latter are generally projected along the axis of the vehicle and thus towards the armrest thus creating a high risk of injury for the passenger in case of a shock. The present invention provides a secure herringbone arrangement for the armrest of a seat i.e. making it possible to reduce the risk of injuries caused by the armrest, in case of a shock. Therefore, the present invention provides to leave a space between the seating part structure and the armrest to enable the passenger on the seat to be projected along the axis of the airplane in case of a shock without hitting the armrest. More precisely, the aim of the invention is a herringbone arrangement for the armrest of a seat wherein the armrest is angularly shifted with respect to the seat, so as to form a free space (33) between the seat and the armrest. The present invention also relates to a seat and a seat assembly provided with such an arrangement.

An airframe apparatus for attaching and selectively releasing multiple payloads suspended from an aircraft. The airframe apparatus includes a collapsible loading frame that is configured to have a stabilized open position and a collapsed closed position. The loading frame is constructed from a plurality of vertical struts and horizontal struts that are hingedly interconnected at corner assemblies to allow the loading frame to be collapsed. A payload hook is connected to each of the corner assemblies by a universal joint. A plurality of legs are rotatably attached to the loading frame and can be extended below the loading frame to support the payload hooks off the ground during landing of the airframe apparatus. Shock absorbing devices are operatively attached to the legs to absorb the impact of the loading frame against the ground during landing. The airframe apparatus is used as part of a cargo management system for transporting multiple payloads suspended from an aircraft. The cargo management system includes the airframe apparatus, an attached cable assembly which is used to suspend the airframe apparatus beneath an aircraft such as a helicopter, and electronic controls.

The invention relates to a method for operating a handheld electric power tool, having an electric motor that is drivable at a rated torque as the maximum allowable motor torque by the application of a maximum allowable motor current. The method includes the steps of manually furnishing a specification of a maximum torque, in which the maximum torque is within a setting range between a minimum set torque and the rated torque, operating the electric motor by applying a motor voltage which corresponds to an rpm desired by the user, and limiting the motor current to a current value that depends on the furnished specification of the maximum torque.

The invention also related to a drive unit for an electric power tool, which includes an electric motor drivable at a rated torque as a maximum allowable motor torque by application of a maximum allowable motor current. A setting element manually furnishes a specification of a maximum torque, the maximum torque being within a range between zero and the rated torque. A triggering unit operates the electric motor by applying a motor voltage that corresponds to an rpm desired by the user. A motor controller limits the motor current to a current value that depends on the furnished specification of the maximum torque.

A device for interproximal separation and matrix band adaptation and retention for use in a dental restoration procedure. The device includes a pair of integral wedge elements and a pair of cushion elements that together achieve simultaneous separation, adaptation and retention. A system is also provided including the device and a matrix band. A method of preparing a tooth for restoration is also provided that includes placement of the matrix band and positioning of the device to adapt the matrix band to a tooth to be prepared and retain it in its properly adapted position while simultaneously separating the tooth to be restored from an adjacent tooth.

A valve connector for medical lines includes a tubular body having a male inlet fitting with external luer cone, which can be coupled to a female tubular fitting with internal luer cone, wherein the inlet fitting includes an internally threaded external tubular element for screwed engagement with the female fitting, and an internal tubular element that can be displaced axially from a retracted position of closing to an advanced position of opening of the valve means that control the passage of flow through the connector. The internally threaded external tubular element is free to turn, and the arrangement is such that, when it is screwed off the female fitting and the passage of flow is closed by the valve means, the external luer cone and the internal luer cone remain axially coupled to one another by friction.

A resilient windshield wiper assembly is disclosed which comprises a resilient wind-deflector portion molded or extruded to provide a receiving hollow for insertion of a support beam. The resilient wind-deflector portion has a feature strategically positioned and structurally effective to prevent the resilient portion from being rotated or twisted around the support beam. The wind deflector is symmetrical with respect to the axial orientation of the support beam. The symmetry allows conversion of the wind force components from lifting forces to normal forces acting to press and/or hold the wiper against the wiper surface even when subjected to side gusts or reverse head-wind forces. The symmetry further provides a strength member acting directly over the top of the wiping lip surface avoiding introducing a twisting force into the support beam.

A stabilizer for an archery bow includes a motor-driven gyroscope located inside a tube which is mounted on the bow. The stabilizer screws into front of bow where traditional stabilizer/vibration dampeners usually attach. The stabilizer of the present invention has an electric motor powered gyroscope.

Hair curling tong (1) with a fixed handle (2) and a heated tube body (12) fixed thereto provided with clamp (17) that is fixed in a tilting way to the curling tong (1) and can be tilted between a closed position wherein the clamp (17) is held in contact with the tube body (12) by means of a spring (18) activated by a button (20) and an open position wherein the clamp is tilted away from the tube body (12), characterized in that the clamp (17) is fixed in a rotatable way to the curling tong (1) by means of a ring (10) which is rotatable over 360° around the longitudinal axis (X-X′) of the tube body (12).

The problem during overrun fuel cut-off operations, i.e. cut-off of fuel injection during trailing throttle conditions of the vehicle, is that the transition entails an undue torque jump, resulting in the smooth operation of the engine and the driving comfort of the passengers of the vehicle being affected. The aim of the invention is to reduce the torque jump. Said aim is achieved by injecting fuel into a cylinder of the Otto engine in a multiple injection process, at least a partial quantity of the fuel that is to be injected being injected during the compression phase, whereby the quantity of air that is taken in advantageously decreases because no internal cooling takes place while the efficiency is advantageously reduced due to the lesser degree of swirling, resulting in lower torque. Overall, torque (DM) is reduced to a significantly greater extent than by merely adjusting the spark angle (ZW) while smooth operation of the Otto engine is not affected.

When a seat back in a forwardly folded state is raised to a predetermined raised state by activating an electric motor by turning on a switch, the electric motor is immediately stopped even if the switch is still turned on, and the seat back is retained in the raised state. There are provided a locking member which operates to retain the seat back in the raised state when the seat back is in the predetermined raised state and a lever which turns in association with the operation of the locking member. The lever turns on another switch to open a drive circuit for the electric motor.

The invention relates to a self-monitoring conical ball bearing for a generator, and belongs to the technical field of bearings. An excitation disk embedded with an excitation magnet I and an excitation magnet II is arranged on an outer ring; a right clamping plate is arranged on an inner ring; a thermocouple, a circuit board and a left clamping plate are arranged on the right clamping plate; a metal film is pressed between the left clamping plate and the right clamping plate; a piezoelectric film is adhered to the metal film to form an energy harvester; an excited magnet I is arranged on the energy harvester and is positioned in a guide hole in the left clamping plate; a pressing plate presses a disk-type spring, an excited magnet II and a piezoelectric body for measuring the rotating speed into a blind hole in the left clamping plate in sequence; the piezoelectric body, the energy harvester and the thermocouple are respectively connected with the circuit board through wire groups. The self-monitoring conical ball bearing for the generator has the advantages and the characteristics that automatic power supply, sensing and monitoring functions are realized, the structure of mounting equipment is not required to be changed, and true real-time and on-line monitoring can be realized; configuration parameters of the structure of energy harvester and the excitation magnets are reasonably determined, and the power supply and generation capacity is high; by the adoption of the guide hole, the excited magnets can be prevented from being twisted, and the reliability of the energy harvester is improved.

A double parallel type heavy-duty static balance motion simulation platform mainly comprises a motion platform, a base platform, a load-bearing platform, six driving branches and three load-bearing branches, wherein the six driving branches are completely identical in structure, and the three load-bearing branches are completely identical in structure. The motion platform, the base platform and the driving branches connected with the motion platform and the base platform constitute a parallel driving mechanism. The load-bearing platform, the base platform and the bearing branches connected with the load-bearing platform and the base platform constitute a parallel load-bearing mechanism. Each of the six driving branches is in an uninterrupted power supply (UPS) structure and is composed of an electric cylinder, a first spherical hinge and a universal hinge. Each of the three load-bearing branches is in a strategic petroleum reserve (SPR) structure, and is composed of a balance hydraulic cylinder or a balance air cylinder, a second spherical hinge and a rotational joint. The load-bearing platform is connected with the motion platform through a third spherical hinge. The double parallel type heavy-duty static balance motion simulation platform is strong in bearing capacity, quick in dynamic response speed, simple to control, and suitable for indoor and field environments, and simultaneously reduces extra load caused by the load-bearing mechanism.

Tool holder for cutting bodies (5) may be mounted on a base holder (15) by a fixing device (41), and a cooperating stop extending in a plane in the direction of the tool holder. A positive positional fixing against any movement along the three axes of the spatial coordinate system may be obtained. The planar stop is divided into planar sections (19, 21) by a machined recess (23). The recess (23) forms a seat for housing a projecting matching body (25) on the base holder (15). The walls of the recess (23) form planar support surfaces (31, 33) for the matching body (25), which each define differing planes perpendicular to the stop, to resist displacement and torsional forces resulting from the cutting force into the matching body (25) of the base holder (15).

An unvulcanized rubber strip (3) is supplied to an outer peripheral surface of a rotating cylindrical body (4) from a sending-out roller (16) which laterally moves in an axial direction of the cylindrical body (4), thereby spirally winding the rubber strip (3) to form a winding body (5). In a tilting reference plane (29) defined as a plane which is in parallel to a plane (4S) passing through an axis (4i) of the cylindrical body (4) and which passes through an axis (16i) of the sending-out roller (16), the sending-out roller (16) is held such that the sending-out roller (16) can tilt positively and negatively within an inclination angle (α) of 0 to 45° with respect to a tilting reference line (N) which is parallel to the axis (4i) of the cylindrical body (4). The sending-out roller (16) is laterally moved while changing the inclination angle (α).

A technology for making the sensation at use of prosthetic limbs utilizing a hydraulic cylinder and a spring cylinder as comfortable as at use of those utilizing a pneumatic cylinder and further for improving walk following properties. In particular, the arrangement of drag generating means, such as a hydraulic cylinder and a spring cylinder, per se is specified. Accordingly, the resistance produced by the drag generating means in accordance with an increase of knee angle is increased. The first torque T1 at the first stage of initial period of bend of knee joint is made small, while the second torque T2 at the second stage of final period of the further advanced bend of knee joint is made large, thereby satisfying a relation of T1≦T2, as different from conventional ones.

The invention discloses a permanent magnet synchronous motor flux linkage prediction control method taking optimal duty ratio modulation into account, wherein a flux linkage vector effective value minimization principle is introduced into duty ratio calculation of a fundamental voltage vector, and in combination with a voltage vector filtering method, torque and flux linkage ripple can be restrained effectively while calculation time of a processor is reduced, and reliability and steady-state performance of a system are improved. Firstly, torque increment is converted into load angle increment, control targets are unified to be a stator flux linkage vector; then, fundamental voltage vector filtering is executed according to a dead-beat thought, and under the premise of reducing alternativevectors, working time of an effective voltage vector can be calculated quickly; thus, the duty ratio of the voltage vector can be calculated according to the flux linkage vector effective value minimization principle, the selected voltage vector and the vector duty ratio are determined according to combined error of the flux linkage vector, and torque and flux linkage ripple can be restrained effectively.