Showing papers on "Reducer published in 1991"

Quantizing error reducer for audio signal

Abstract: There is provided a quantizing error reducer for an audio signal, which is constructed to feed a quantizing error back to the input side of a quantizer through a noise filter, wherein the coefficient of the noise filter is set on the basis of information relating to the equiloudness curve, thereby making it possible to reduce the noise in the hearing sense.

Drag reducer for rear end of vehicle

Abstract: A drag reducer to be mounted on the rear face of a truck or other vehicle. It is comprised of an enclosed bag in the shape of a truncated cone with one or more elastic cord(s) encircling it. Air is introduced into the drag reducer upon forward motion of the vehicle via a tube, the open end of which is facing the direction of motion. As air pressure is increased in the drag reducer with increasing forward velocity the tension in the surface of the bag causes the elastic cord(s) to be extended allowing the drag reducer to reach its fully expanded shape. At slow driving speeds the elastic cord(s) contract and prevent the drag reducer from falling or being blown by cross winds over the rear signal lights or license plate and from touching the road in the case of larger more aerodynamically effective drag reducers.

Combined engine starter/generator

Abstract: An engine starter/generator has a rotor which rotates on excitation caused by an exciting winding, a speed reducer which reduces the speed of rotation of the rotor, a first clutch which transmits the rotation of the rotor, the speed of which has been reduced through the speed reducer, to an output shaft of an engine, and a second clutch which is disposed between the engine output shaft and the rotor to connect together these two members when the speed of rotation of the engine output shaft is greater than that of the rotor. The speed reducer and at least either one of the first and second clutches are disposed substantially axially in line with one another. This arrangement reduces the radial dimension of the engine starter/generator. It can, therefore, be disposed with in the engine room of a vehicle without difficulty.

Cycloidal type planetary gear reducer

Abstract: An internal meshing type planetary gear reducer made of plastic material constructed in such a manner that an external gear (24) fitted on an eccentric member (23) integrally formed on an input shaft (21) internally meshes with an internal gear (27), and inner pins (26) formed on the external gear integrally therewith are inserted in inner-pin holes (32) provided in a flange (31) formed at one end portion of an output shaft (22) so that rotation of the input shaft is reduced in speed and the speed-reduced rotation is transmitted to the output shaft. In the internal meshing type planetary gear reducer, each inner pin is provided with cutouts (26A) on inner and outer sides thereof in a radial direction of the external gear, or each inner-pin hole is provided with cutouts on inner and outer sides thereof in a radial direction of the flange, and only the inner pins which serve to transmit a torque at a predetermined range of the contacting location are arranged to be in contact with the inner-pin holes. With such construction, there is little resistance between the moving parts and the forcedly resistive sliding motion can be eliminated, whereby the torque transmission can be performed smoothly.

Drag reduction method for gas pipelines

Abstract: A method of reducing friction or drag on a gas, e.g. natural gas, flowing in a pipeline wherein a drag reducer is injected into said pipeline to form a thin film on the internal surface or wall of the pipeline. The drag reducer in the present invention is selected from a class of chemical compounds which are comprised of a molecular structure having a polar group at one end thereof which bonds onto said inner wall of the pipeline and a non-polar group at the other which smoothes the gas-solid interface between said wall and said flowing gas thereby reducing gas turbulence at said interface.

Adjustable cycloidal speed reducer

Abstract: A cycloidal speed reducer having a plurality of rotatable, tapered, concentric bearings each having a tapered bearing surface adapted for contact with a peripheral tapered surface of a movable member. The contacting tapered bearing and peripheral surfaces are relatively adjustable to provide contact therebetween.

Gear reducer with backlash eliminator

Abstract: A gear speed reducer having an input shaft formed with a worm which meshs with a worm gear mounted on an output shaft disposed a fixed distance from and at right angles with respect to the input shaft. The worm is provided with an involute thread that progressively becomes thinner from one end to the other end of the worm. An adjustable cartridge rotatably mounts one end of the shaft and the cartridge is adjustably mounted to permit axial adjustment of the shaft to bring a new section of the thread of the worm into engagement with the worm gear to eliminate backlash therebetween. The adjustment is quickly and easily performed without having to remove the reducer from service.

Antiresonant suspension device for a helicopter

Abstract: The suspension device is interposed between the rotor and the fuselage of the helicopter for filtering the vibration exciting forces and moments coming from the rotor. In this helicopter, a speed reducer (1) is provided in a housing mounted on the fuselage (22) by rigid oblique bars (28). According to the invention, there are disposed around the housing of the speed reducer, in a number equal to the number of rigid oblique bars (28), monodirectional antiresonant means (20,21,23,23a,23b,25) connecting the upper ends of the rigid oblique bars (28) to the speed reducer (1).

Pipe bending machine with cantilevered bending head, with interchangeable multifunction tool, and being programmable by means of a computerized unit

Abstract: Pipe bending machine including a bending head placed on an overhanging arm, a bending pulley with race, which is controlled by the final gear of a speed reducer powered by an electric motor, thus determining the pipe bending until 180° in cooperation with an engagement tooth installed on the pulley, and with an adjustable shoe pad, with a junction unit installed between the pulley and the speed reducer, thus consenting the quick interchangeability of the pulley and the connection, if any, with a complementary machine, and a computerized unit in order to have the operational programming of the above described machine.

Effective riser reducer step device

Abstract: An effective riser reducer step device is provided, which consists of a mechanism placed upon a tread of a step of a staircase for reducing the height of a riser of the step. Another mechanism is for moving the riser height reducing mechanism to the tread of each successive step of the staircase, so that a physically impaired person suffering from atrophy, back and leg problems can ascend and descend the steps of the staircase.

Pipe fitting reducers

Abstract: Cast iron fittings are coupled with reducer fittings in a fluid handling network to reduce the flow diameter in various pipe sections of the network. Each main fitting and reducer fitting has two or more tabs about their mating open ends which are aligned and connected one to the other to maintain the fittings coupled together. Reducer fittings having standard size, large diameter ends, are provided with variously sized smaller diameter ends to selectively reduce the flow. The reducer fittings are straight-through sections useful with main fittings of various types, including Tees, elbows, right-angle bends and the like.

Electric door opener for sliding doors

Abstract: An electric operator for a sliding door mounted for sliding movement along a track, comprising a motor having an iron cooling flywheel disposed on a drive shaft thereof, the flywheel being provided for imparting a predetermined amount of inertia for starting and stopping of the motor such that the operation of the motor is characterized by a soft start and stop. A worm gear reducer is connected to the drive shaft for effecting a predetermined reduction ratio of rotation. A limit switch is coupled to the reducer for limiting rotation of the drive shaft to a predetermined number of rotations, and apparatus is provided for coupling rotation of the drive shaft to the linear movement of the sliding door along the track.

Turning device for industrial robot

Abstract: PURPOSE:To provide a compact industrial robot turning device of high reliability without the abrasion and disconnection of a harness caused by the turning of the turning device. CONSTITUTION:The axes of a motor 4 and a speed reducer 6 are formed to be hollow and disposed concentrically. The axes of the motor 4 and speed reducer 6 are further disposed concentrically with the turning axis of a turning body 2, and a harness 8 is disposed piercing the hollow parts of the motor 4 and speed reducer 6. The harness 8 thereby passes the turning axis of the turning body 2, so that abrasion and disconnection caused by sliding motion can be eliminated, and a turning device can be made compact.

Eddy-current speed reducer

Abstract: PROBLEM TO BE SOLVED: To provide an eddy current speed reducer which has a mechanism for automatically returning a magnet support cylinder to a non-braking position, prevents the occurrence of drag torque at the time of non-braking, and possesses a simple device configuration. SOLUTION: The eddy current speed reducer is equipped with a brake drum 7 coupled with a rotating shaft, an immovable guide cylinder disposed in the brake drum and provided with an inner cavity with a rectangular cross section, a magnet support cylinder 14 provided in the inner cavity, a plurality of magnets 24 provided on the outer peripheral surface of the magnet support cylinder at equal intervals in the peripheral direction so that polarities alternately change, and a plurality of ferromagnetism parts provided on positions corresponding to the magnets. The respective ferromagnetism parts 121 and coupled parts 122 form an integral ferromagnetic 15, and an actuator 20 is provided which is connected to the magnet support cylinder 14 so as to rotate the magnet support cylinder 14 in the peripheral direction and in the direction opposite to the usual rotation of the brake drum 7 from the non- braking position, in which two adjacent magnets with different polarities are disposed partly facing to the shared ferromagnetism part 121 to the braking positions opposed to the respective magnets. COPYRIGHT: (C)2003,JPO

Speed reducer with friction wheel for machines rotating at a high rate of rotation, of the epicycloidal double-train type

Abstract: A friction-wheel speed reducer for machines rotating at high speed of rotation of the epicycloidal double train type employing between a drive rotor (2) and the output shaft (3) of a driven rotor the mechanical drive effects by rotary friction which are obtained by the rolling of friction wheels which are strongly applied against each other. The forces of application are generated by the centrifugal force resulting from the orbital rotation of mass planetaries (5) of mass (M) and propagated from wheel to wheel up to the drive rotor (2) via outer planetaries (6) provided with wheels (62) on the rim of which they rest, the said outer planetaries (6) being disposed to roll while resting on circular tracks (10) via their bearer hubs (61), the movement of rotation being captured by the side cheeks (31) of a planetary-holder cage (30) and transmitted to the output shaft (3) with which it is integral.

Vertical drive apparatus for storage and retrieval vehicles

Abstract: A novel vertical drive assembly for a storage and retrieval vehicle wherein a cable drive motor is horizontally juxtaposed between a lift cable winding and unwinding drum. The vertical drive assembly is modularly assembled on a frame and is attachable and detachable from the vehicle as a unit. The vertical drive assembly comprises, in seriatim, the motor, a belt drive sprocket wheel, a drive belt, a belt driven sprocket wheel, and, juxtaposed and on the same axis as the driven sprocket wheel, an input adapter, a speed reducer, and the drum. The motor is attached to the frame by jacks used to raise and lower the motor to adjust tension in the belt. To stay within the width of the vehicle, the input adapter and speed reducer are at least partly disposed within the core of the drum with the speed reducer providing a bearing for the drum. To reduce starting inertia, sprocket wheels are fabricated from lightweight material. Drum supports comprise louvered blades to induce air flow over the speed reducer when the drum rotates. In one embodiment, a concentric disc, spring actuated, electrically-released brake is mounted on the axis of the motor when the length of the combination motor and brake is less than the width of the vehicle. In another embodiment, a disc brake comprising pneumatic release and spring actuation is juxtaposed between the driven sprocket wheel and the input adapter. Interlocks prevent the vehicle from operating when air pressure is below a predetermined level.

Speech recognition remote controller

Abstract: PURPOSE:To enhance the precision of recognition of the speech recognition section of a speech recognition remote controller by taking out an output approximate to noise component from an adaptable noise reducer and by applying subtraction to the output. CONSTITUTION:Main input from a microphone 3 is sent to adder 15 via input terminal 10A of adaptable noise reducer 10. On the other hand, as a signal corresponding to the speech from speaker 8 which becomes a noise component, a speech signal from speech output circuit 6 is sent as a reference signal to adaptable filter 16 via input terminal 10C of adaptable noise reducer 10. This output is sent as a subtract signal to adder 15. With this, the noise component of main input is reduced, and is output to speech recognition unit 4 via output terminal 10B of adaptable noise reducer 10. Since speech recognition unit 4 executes speech recognition processing and command interpretation for the input for which noise is reduced, speech recognition processing can be executed highly precisely.

Speed reducer of driving motor for controlling automatic clutch

Abstract: PURPOSE: To provide a speed reducer which can smoothly engage an automatic clutch and release the same quickly with both forward and backward rotation of a driving motor. CONSTITUTION: A sun gear 92 is fixed to an input shaft 90 of a planetary gear device 44 which is an output shaft of a driving motor 42, and an output shaft 46 is fixed to a carrier 96. A one-way clutch adapted to engage only when the driving motor 42 is rotated in the clutch engaging direction is disposed between the input shaft 90 and a case 100, and a one-way clutch 104 adapted to engage when the driving motor 42 is rotated in the clutch releasing direction is provided between the input shaft 90 and the carrier 96. The speed reduction ratio of the driving motor 42 during the rotation in the clutch engaging direction is set smaller than that during the rotation in the clutch releasing direction. COPYRIGHT: (C)1992,JPO&Japio

Hybrid dynamic vibration reducer

Abstract: PURPOSE:To perform isolation from vibration in a wide range by small external force by constituting an active dynamic vibration reducing mechanism of an actuator while connecting an additional mass, movable in a horizontal direction, to a multistory building through a damper and the actuator. CONSTITUTION:An additional mass (a), movably supported in a horizontal direction, is set up especially in the top part of a multistory building B through a hybrid dynamic vibration reducer comprising an actuator (b), load cell (c), damper (d), spring (e) and a load cell (f). An active dynamic vibration reducing mechanism of the building B is constituted of the actuator (b). In this way, a vibroisolation effect over a wide range can be displayed by small external energy.

Small size speed reducer

Abstract: PURPOSE:To obtain a small size speed reducer which is large in reduction gear ratio and is high in transmission efficiency by making the speed reducer of a sun gear, a stationary internal gear, a movable internal gear and 1 through 4 pieces of planetary gears which include 3 external gears with specified relation in the number of teeth while being meshed with the aforesaid gears, and thereby letting the sun gear and the movable internal gear act as an input one and an output one respectively. CONSTITUTION:This reducer is consists of a sun gear 4 having (1) teeth, a stationary gear 10 having (m) teeth and a movable internal gear 21 having (n) teeth wherein gears 10 and 21 are coaxial with the sun gear 4, and 1 to 4 planetary gears 12 mesh with the gears 4, 10 and 21. In addition, the planetary gears 12 are provided with both a tooth profile section c15 having (s) teeth which is meshed with the movable internal gear 21 and a tooth profile section b14 having (r) teeth which is meshed with the stationary internal gear 10, at the both end sections of them, and the side surface of a gear profile forming arm section is provided with a gear profile section a13 having (t) teeth which is meshed with the sun gear 4. In this case, they are formed in such a way as to be (t)>(r) and (t)>(s), and they are so constituted that the sun gear 4 acts as an input one and movable internal gear 21 acts as an output one.

Plate type feeder

Abstract: The garbage conveying equipment comprises a motor, a speed reducer and two drive sprockets on a drive machine frame. The sprockets with chain rolls drives a chain plate to do rectilinear motion and the chain plate is provided with a baffle plate to pull the material for conveying, effectively solving the problems of high position, fixed quantity and uniformity of the material (garbage) during conveying.

Operating force reducer

Abstract: PURPOSE:To enable this reducer to cope with extensive car types, excellent in mountability and control performance and reduce an operating noise, in the operating force reducer available for a transmission or the like CONSTITUTION:This reducer consists of an elastic body 16 being displaced according to operating force of a change lever, a displacement detecting means 20 detecting a displacement of the elastic body 16, a control means for controlling a current value, a motor 24 performing the specified output, and a geared transmission mechanism 23 boosting the extent of output of the motor 24 and transmitting such an assist force as conformed to the displacement

Pressure reducer with inclined valve

Abstract: A pressure reducer comprising a hollow body (10) having a fluid inlet pipe (11) aligned on its axis and communicating with a fluid outlet pipe (12) through a pressure-reducing valve (13); the reducing valve (13) comprises an annular sealing seat (18) at the end of a body of the valve (16), interacting with a stopper (19) which can move axially in a pressure-reducing chamber (15) open towards the outlet pipe (12), in which the chamber (15) and the pressure-reducing valve (13) exhibit an inclined configuration with respect to the fluid inlet (11) and outlet (12) pipes, and in which the body of the valve (16) exhibits lateral pipes (33) which place the pressure-reducing chamber (15) in communication with the chamber (23) of a pressure-balancing piston (22).

Automatic flaw detector for pipe billet

Abstract: The utility model relates to an automatic flaw detector for the pipe billet which is the equipment used for the online or off-line flaw detection for variable diameter bar materials and variable length bar materials of the pipe billet of seamless steel pipe, and the automatic flaw detector for the pipe billet can automatically work under the microcomputer control by matching with an eight-channel computerized ultrasonic flaw detector. The pipe billet conveying by a step feed machine, the rotation of the pipe billet and the walk of a probe carriage all adopt a planetary speed reducer for transmission. The utility model can adopt variable distance step feed mechanism, a cylindric type following cylinder, a crawler type creel stand, a rotary device, a combined type probe, a rocking arm type marking machine and a vertical type walking carriage. The probe can automatically lift, falling, automatically identifying the defect, and automatically marking. The defection speed can reach to 9 meters/ minute.

Work rotating device for laser beam machine tool

Abstract: A work rotating device for a laser beam machine utilizes a work-supporting bed rotatable by a speed reducer mounted on a frame adapted to rest on a table of the laser beam machine. In a first embodiment, the speed reducer is fixed to the frame, and the frame has two orthogonal surfaces alternatively engageable with the table so that the axis of rotation of the work can be either vertical or horizontal. In a second embodiment, the speed reducer is manually tiltable in the frame by direct manual rotation of a shaft on which the speed reducer is mounted. In a third embodiment, the speed reducer through which the work is rotated is mounted on a shaft which is connected to a handwheel through another speed reducer. In a fourth embodiment, the speed reducer through which the work is rotated is tilted by a servo motor operating through a speed reducer.

Reducer water solution injecting nozzle device in ammonia denitration system of diesel engine

Abstract: PURPOSE:To improve the purifying efficiency of nitrogen oxide in exhaust by supplying a reducer from a reducer water solution passage to a nozzle through heating pipes, arranged on the inside of an exhaust pipe, and injecting a reducer water solution vaporized in the heating pipe from the nozzle CONSTITUTION:This aqueous ammonia injection nozzle device 4, mounted on the upstream side from a catalytic reactor of an exhaust pipe 2, has a casing 24 mounted on the exhaust pipe 2, while an aqueous ammonia pipe 26 formed on the inside of the casing is connected to a tank, in which aqueous ammonia that is a reducer aqueous solution is accumulated, through a pipe 5 A needle valve 27 throttling the aqueous ammonia passage 26 and an accumulator 28 filled with gas of air or the like are provided in the casing 24 The aqueous ammonia passage 26 is connected to a box unit 29, whose interior serves as a vaporization expansion chamber 30, through heating pipes 25 arranged in the exhaust pipe 2, while gaseous ammonia heated and vaporized in the heating pipes 25 is injected into the exhaust pipe 2 from a porous nozzle 31

Driving device for independently rotating wheels of a railway vehicle with driving shaft.

Abstract: of EP0428091Device for driving independent wheels (12, 13) of a rail vehicle having a driving axle (20) in rotation from a motor (14), a reducer (15) and a mechanical differential (18). The mechanical differential (18) is arranged outside one of the wheels (12), of which one of the output pinions is coupled directly to the nearest wheel and the other is coupled to the other wheel (13) by means of a connecting shaft (20).

Material distributing device

Abstract: The utility model provides a spreading machine for garbage treatment, which comprises a motor, a speed reducer, an electric roller, a conveyor belt, etc. A spreading device for cloth, which can be moved forward and backward, is composed of rigid frames. The utility model can work without manual operation and can guarantee the good health of operating staff.

Rotary body driving device

Abstract: PURPOSE:To simplify constitution and ease maintenance and inspection by supporting a rotary body on a main body frame side, and fitting a motor with a speed reducer with the output part, made as a hollow axis, of the speed reducer engaged with the rotary axis of the rotary body from the outside, in the drive device of the roller of a belt conveyer. CONSTITUTION:The drive device 80 of tapered rollers 10 and 11 supported with a main body frame is composed by integrating a motor 81 and a speed reducer 82, and also the output part of the speed reducer 82 is formed as a hollow axis 83. The output part is engaged from the outside with the outer side protruded part of the roller axis 17 of the tapered rollers 10 and 11, and the roller axis 17 and the hollow axis 83 are integrated with a key 84. The main body of the speed reducer 82 is linked to a supporting frame 13B via a torque arm 85. This constitution permits simple configuration and easy maintenance and inspection with the need for a driving wheel body etc. eliminated.