57results about How to "Quiet and smooth operation" patented technology

In a zoom lens of a fixed total length, at the time of changing the magnification from the wide-angle end toward the telephoto end, the first lens group is anchored while the second lens group is moved, and the third and fourth lens groups are moved so as to be located at the object side of the telephoto end relative to the wide-angle end, such that: the interval between the second and third lens groups is decreased at the telephoto end relative to the wide-angle end; the interval between the third and fourth lens groups is increased at the telephoto end relative to the wide-angle end; and the interval between the fourth and fifth lens groups is increased at the telephoto end relative to the wide-angle end, and at the time of focusing a near object point from a remote object point, the second lens group is moved.

A method is disclosed for controlling the commutation in an electronically commutated motor (20) which comprises a stator having at least one phase (24, 26), and a permanent-magnet rotor (22), and with which a current limiter (36, 58) and a controller (18) for regulating a motor variable are associated. The current limiter (36, 58) serves to limit the current (I) in the at least one phase (24, 26) to a setpoint value. The regulation by means of the controller (18) is accomplished by modifying the distance in time (W) between switching on (t1) and switching off (t2) of the current (i1, i2) in the at least one phase. In this method, the setpoint value to which the current limiter limits the current (i1, i2) in the relevant phase is modifiable. It is modified substantially as a function of a ratio of two times (W/T), namely as a function of the ratio of the distance in time (W) between switching on (t1) and switching off (t2) of the current (i1, i2) in the relevant phase (24, 26) to the time period (T) required by the rotor, at the instantaneous rotation speed, to rotate through a specified rotation angle. A decrease in noise at low rotation speeds is thereby made possible.

A gyroscopic exercise device has a pair of handles attached to a housing. A user holds and rotates the handles along cone-like paths causing precession of a rotor, which is rotating about its spin axis, to provide resistance to the user. The device has an axle disc that holds ends of an axle of the rotor. The periphery of the axle disc and the ends of the rotor axle are within a circular race in the housing. A motor attached to the axle disc has a wheel for rotating the rotor about a spin axis by a temporary supply of power from included batteries in one of the handles. The batteries are in between two opposite springs in one of the handles and normally biased away from an electrical contact until the user pushes them through an end pin to overcome the bias.

The present invention generally relates to a safety restraint suitable for restraining the hunter to a tree in a deer stand. The safety harness of the invention comprises a

• • iii) user member for connecting to the user,
  • iv) an anchor member for attachment to a tree or other suitable generally vertical stand mounting member and
  • iii) a connecting member which cooperatively connects the user and anchor members,

wherein connected to said anchor member is a round and/or oval shaped ring sewn into the anchor strap material. The connecting member which is attached to the user member is connected to the D-ring or round and/or oval shaped ring attached to said anchor member.

A physical therapy and physical assist apparatus and system includes a vertical support pole with mount for ceiling and floor. A shaft in combination with the pole is used to adjust the height of the pole to fit the distance between ceiling and floor and mount the apparatus. At least one handle is attached to the vertical pole and via a rotating head and brake assembly. The brake assembly includes a brake pad for adjustment of resistance on a walk-around arrangement thereof. The handle includes a 25 degree kick out in the walk-around arrangement of the apparatus.

The invention relates to a device for ring spinning or twisting machine which is provided with a guide eye (6) the guide parts (5, 5') of which are used for twisting and veer silking (F), and a holding unit (7), the guide eye (6) is arranged on the holding unit (7) and rotates with a given spin axis (A), wherein force generating devices (12, 13; 12', 13'; 28) are used between the axial force (AK) to the guide eye (6), when the device is operated by continuous acting of the force generating devices, a first sliding section (14) formed on the guide eye (6) is bunted on a second sliding section (15)formed on the holding unit (7), thereby providing axial support to the guide eye (6) in that way. The invention also relates to the ring spinning or twisting machine and the guide eye thereof.

An integrated motor pump for use in medical devices and the like.

A Link Stacking Actuator is a scalable device that will contract or expand upon the application of rotational force. This rotational force is converted into linear force in contraction and this contraction can be released for expansion. Contraction and expansion are determined by the relative direction of rotational force applied. The device only generates linear force when contracting. Expansion is simply a relaxation of the device. The conversion of rotational force to contraction is achieved by mechanical stacking of interconnected links that fold or stack into a structure when rotational torsion is applied from a motor against a fixed mount-point or another counter-rotating motor. When used in oppositional pairs, these devices can be used to actuate hinged beams such as robotic arms, legs, and fingers. The device can also be used for direct lift applications when configured in multiple parallel sets.

The invention relates to a rail belt-type conveyor with rotary wheel structures. The rail belt-type conveyor comprises a support, a headstock, a tailstock, an upper guide rail, a lower guide rail, the rotary wheel structures, spiral steering mechanisms, towing trolleys, a tape, a steel wire rope, a driving roller, steering racks and vertical racks, wherein the tape is arranged on support roll groups on two ends of the support for rotation in a surrounding manner; the towing trolleys are separated from the tape or are in contact with the tape on the middle part of the support through the rotary wheel structures and the spiral steering mechanisms; the upper guide rail and the lower guide rail are both arranged on the support through pressing plates; the headstock is arranged on the head part of the support; the tailstock is arranged on the tail part of the support; and the steering racks and the vertical racks are arranged between the tailstock and the headstock. The rail belt-type conveyor has the advantages that the structure of the conveyor is optimized, and the use cost is lowered, so that complementary advantages are realized; the operation cost is greatly lowered; a part of ordinary support rolls are replaced by the towing trolleys, so that the cost and assembly cost are lowered; and revolutionary innovation is brought to bulk material transportation.

The invention provides a driving structure of an electric lifting table. The driving structure includes a main support 1 and fixing legs arranged at the four corners of the main support, lifting legs are arranged in the fixing legs in a sleeving mode, and the fixing legs are internally provided with lifting screw rods which are in threaded connection with nuts arranged in the lifting legs; the lifting screw rods are provided with conical driven gears which are meshed with conical driving gears arranged in the fixing legs; a transmission gearbox is arranged on the main support, the two sides of the transmission gearbox extend out of transmission rods to be connected with the conical driving gears in the left fixing leg and the right fixing leg, and the transmission gearbox is connected with a driving motor through the transmission rods. The driving structure of the electric lifting table has the advantages that a reducer is arranged between the motor and driving screw rods and can effectively reduce the operation resistance of the motor and make a lifting device run smoothly and quietly; the reducer is arranged between the left fixing leg and the right fixing leg and located in the main support, and accordingly installation with a housing is convenient to achieve, and balanced output of power is easily achieved.

The invention relates to a kitchen ware, and discloses a faucet-type air blower, which comprises an air pump component, an air faucet component and a connecting component which is used for communicating the air pump component and the air faucet component, wherein the air pump component and the connecting component are located on one side of an operation surface; one end of the connecting component, connected to the air faucet component, passes through the operation surface above the air pump component; and the air faucet component, after passing through the operation surface, is used for venting gas in a direction away from the operation surface obliquely downwards. The air blower disclosed by the invention has the advantages that an air source can be used as a kitchen cleaning device, and the air blower has the characteristics of being convenient and rapid and being convenient in installation; and the air blower is quite in running, and is suitable for daily household use.

The invention relates to a switched reluctance motor which overcomes the shortcomings of large pulsating torque and vibration and high noise of a current switched reluctance motor. A plurality of stators and a plurality of rotors are combined to form a plurality of switched reluctance sub-motors, a plurality of rotors share a rotating shaft to collectively output power, the switched reluctance sub-motors are mutually and serially connected, stators or rotors of each switched reluctance sub-motor are distributed according to a certain rule, the switched reluctance sub-motors are mutually balanced by the aid of pulsating torques of the switched reluctance sub-motors, and stable and quiet operation is achieved. As the switched reluctance sub-motors collectively output the power, and the self-balancing switched reluctance motor has the advantages of operational stability and quietness, stronger power and the like.

The invention discloses a multi-bearing rolling brush assembly and a cleaning robot. The rolling brush assembly comprises a rolling brush tooth box work box, a power box, a rolling brush tooth box fixing shaft assembled on a cover face of a rolling brush tooth box, a first dust-proof part, a second dust-proof part and a third dust-proof part, wherein a wheel type structure is assembled between therolling brush tooth box work box and the power box, the wheel type structure sleeves in an assembly groove position at one end of a rolling brush shaft, a rotation ring of the first dust-proof part and a rotation ring of the second dust-proof part are in interference contact with the corresponding side faces of the wheel type structure, a fixed ring of the first dust-proof part sleeves the rolling brush tooth box fixing shaft, and a fixed ring of the second dust-proof part is fixed on the cover face of the brush tooth box work box; and a rotation ring of the third dust-proof part is assembledon a rotation shaft at the other end of the rolling brush shaft, and a fixed ring of the third dust-proof part is fixed on the rolling brush cover face of the rolling brush tooth box when the rollingbrush shaft is assembled in the rolling brush tooth box, so that the rolling brush assembly runs stably and quietly.

The invention discloses a special rail trolley for friction rolling on a rail. Two opposite inclined surfaces are arranged at the top of the rail; the upper ends of the two inclined surfaces are close to each other; the lower ends of the two inclined surfaces are far away from each other; a copper strip is arranged on the rail in the length direction; the rail trolley comprises a trolley body; a motor and an even number of inclined surface rollers are arranged in the trolley body; the inclined surface rollers are uniformly distributed on the two sides of the rail and are respectively propped against the two inclined surfaces; the motor drives the inclined surface rollers to roll along the inclined surfaces; an electric brush in contact with the copper strip is arranged on the trolley body; the electric brush is used for supplying power to the motor; a tail plate is arranged on the top surface of the trolley body; the tail plate comprises an extension portion which extends in the same direction or the opposite direction of the running direction of the trolley body; and an even number of supporting rollers are arranged below the extension portion. The rail trolley is driven to move through the friction force between the inclined surface rollers and the inclined surfaces, so that the rail trolley runs more quietly and stably, and the processing requirement is low.

The present invention provides a compressor assembly, the compressor assembly is installed on the chassis, the compressor assembly includes: a compressor, the bottom of the compressor has a bottom plate; a first damping pad, the first damping pad The vibration pad has a first vibration-damping body positioned above the bottom plate, the first vibration-damping body is connected to the chassis through a connecting piece; and a second vibration-damping pad, the second vibration-damping pad has a second vibration-damping body The second damping body is located between the bottom plate and the chassis, and supports the bottom plate on the chassis. The first vibration-damping body of the first vibration-damping pad can pull down the bottom plate and then pull the compressor, and the second vibration-damping body of the second vibration-damping pad can support the compressor, through the first vibration-damping pad and the second vibration-damping pad The cooperation makes the compressor unable to move up and down, so that the compressor can run smoothly and quietly, play the role of vibration reduction, and reduce the noise of the compressor when it is working. The invention also provides a water dispenser.