Showing papers on "Reducer published in 1989"

Drag reducer for rear end of vehicle

Abstract: A drag reducer adapted to be mounted on the rear face of a land vehicle. It is characterized by a large piece of flexible material adapted to be tightly fixed around the periphery of the rear surface adjacent the lateral faces of the truck. The piece of material has an area larger than the rear face of the truck so as to display a convex surface when fully extended. The drag reducer has one and preferably two openings located adjacent the periphery of the rear face of the truck and a tubular extends from each of the said opening in a direction towards the front of the truck so that upon forward movement of the truck, air is automatically introduced in said tubular members and projected between the rear face of the truck and automatically forming a plano-convex air bag which reduces the drag behind the truck.

Hydrobrush with speed-reducer of the epicyclic type

Abstract: A hydrobrush of the type incorporating a small Pelton turbine actuated by a water jet at the pressure of the water main and which causes the rotation of a brush. The impeller (4) of said turbine is provided with a co-axial small toothed wheel (504) which is in mesh with two or more toothed wheels or satellites (5) of larger diameter, which in turn are in mesh with a crown gear (303) which surrounds them and is secured to the body (3) of said hydrobrush.

Combination leaf and lawn debris comminuting vacuum and wood chipper

Abstract: A multipurpose reducer vacuum for vacuuming leaf, garden and lawn debris which uses circular grate bars and free swinging hammers to comminute the debris. The reducer vacuum mounts to the rear bumper of a pickup truck. An adjustable discharge chute is used to direct the comminuted debris into the bed of the pickup truck. A wood chipper is provided on the back side of the apparatus for chipping small limb and branches. An alternate configuration adds an intake hopper which uses a baffle plate in cooperation with cutting bars to pull small limbs, branches and saplings into the reducer vacuum. Feed rates up to one foot per second can be achieved.

Unitized electric power steering apparatus

Abstract: A unitized electric power steering apparatus has a main housing (108) which contains a speed reducer (104) and a torque sensor (102). An electric motor (103) which drives the speed reducer (104) and a motor controller (109) which controls the electric motor are mounted on the outside of the main housing (108) to protect them from thermal damage.

Throttle control servoactuator

Abstract: A servoactuator for a vehicle throttle having a direct current motor driving a speed reducer with the output thereof connected to slidably move a fulcrum member having a lever arm pivoted thereon. The lever arm has a cable to the engine throttle connected to one end and a cable to the vehicle accelerator pedal connected to the other end on the opposite side of the pivot. In one embodiment the speed reducer drives an axial lead screw threaded in the fulcrum member. In a second embodiment the speed reducer output is a slotted crank arm having a pin on the fulcrum member slidably received therein. In a third embodiment the speed reducer output is connected by a two-bar linkage to the fulcrum member. A potentiometer is disposed to have the movable element thereof moved by one end of the lever to provide a throttle position feedback signal for use by an external motor control signal generator. The servoactuator is intended for use with a vehicle traction control system.

Portable manually-controlled three-speed pipe-bending machine

Abstract: Portable manually-controlled pipe-bending machine designed for operation at three different speeds, consisting of a boxlike main body, which in its simplest form contains two gear assemblies i.e.: a speed reducer with cooperating gears mounted on three parallel axes, corresponding to three different speeds which are obtained by fitting a conventional handle or any other appropriate structure into a socket driving a gear shaft, and thus making the reduction gear rotate at the desired speed; and a transmission mechanism which is connected with the output gear of the speed reducer and which transmits to a gear train up to the final gear to turn the main driving shaft integral with it and mounting the bending member or matrix. The machine is provided with an auxiliary device performing an intermediary function, which is either separate from the machine and can be connected with one of the three sockets of the speed reducer or is built in the main body, the friction coupling function of this auxiliary device being to allow the engagement/disengagement of the transmission mechanism.

Electric motor-speed reducer unit for driving accessories of motor vehicles, such as window glasses

Abstract: AN ELECTRIC MOTOR-SPEED REDUCER UNIT FOR DRIVING ACCESSORIES OF MOTOR VEHICLES SUCH AS WINDOW GLASSES The unit comprises an armature (1) provided with a rotary output shaft (2) and a speed reducer (3) provided with a shaft (6) supporting a worm (5) engaged with a form wheel (4) for driving the accessory, and an articulated coupling (20) between the two shafts (2, 6) which are disposed in end-to-end relation. The coupling (20) between the two shafts comprises a male member (8) disposed in female parts (9, 11) which are conjugate with the male member (8) and formed in confronting end portions (2a, 6a) of the two shafts (2, 6), and a single bushing (12) in which the end portions (2a, 6a) are inserted and which ensures the support and the axial alignment of the two shafts (2, 6). Fig. 1.

Paper feeder for printer

Abstract: A paper feeder comprises a tray having a stage on which papers to be fed are stacked, driving means for driving a platen, transmitting means for transmitting a motive power of the driving means to position the stage at predetermined position for paper feeding operation, and paper feeding means having a roller for feeding the uppermost one of the papers stacked on the stage when the uppermost paper positioned to contact with the feeding roller at the predetermined position by the motive power. It is advantageous that the paper feeder can be made economical and compact since there is no need to provide an exclusive motive power source having a speed reducer. Furthermore, a contact pressure between the paper feeding roller and the paper is stabilized to enhance the accuracy of the paper feeding.

Control method for active system dynamic vibration reducer

Abstract: PURPOSE: To prevent an excessive force from being exerted on machineries, when the vibration in a main vibration system is fed back to the control device for an active system dynamic vibration reducer, by reducing the feedback gain in response to the increase in amplitude of an added mass. CONSTITUTION: After detected by an acceleration sensor 14, the vibration of a main vibration system 10 is fed back to a damping controller 18, and a control signal is output, via a multiplier 40 and a displacement controller 20, to a servo valve 22, a hydraulic cylinder 24, and an auxiliary vibration system (added mass) 12 constituting an active system dynamic vibration reducer, so as to damp the vibration. In this case, the amplitude of the added mass 12 is detected by a displacement sensor 26, and a given value C1 is subtracted from the absolute value of the amplitude calculated by a computing element 28, and further thereto a given value C2 is added via a limiter 32, and a smoothing circuit 34, and the feedback gain in the multiplier 40 is decreased by a reciprocal computing element 38 in response to the increase in amplitude of the added mass 12. Thus, an excessive force can be prevented from being exerted on machineries, and even if the vibration increases, operation can be continued. COPYRIGHT: (C)1991,JPO&Japio

Electronic capacitive voltage reducer

Abstract: The invention relates to a capacitive voltage reducer. Its object is a reducer which, for each phase of an electrical power line whose voltage is to be measured, comprises a first capacitor (C1) connected on the one hand to one phase of an electrical power line and on the other hand, through a connecting cable (2), to a preamplifier consisting of an operational amplifier (A) fitted with a second capacitor (C2), in parallel with a first resistor (R2), between its negative input and its output; the reducer also comprises a line discharge resistor connected between the phase line and earth (RL) or between the phase line and the low voltage plate of the first capacitor (R'L), a third capacitor C3 connected between the low voltage plate of the first capacitor and earth, a low-pass filter (3) on the input side of the preamplifier and a slaved power amplification stage (AS) including a high-pass filter and supplying mainly the counting circuits (9) and the protective circuits (10). Application in operating electrical power supply networks.

Crank type thread swinging pin gear speed reducer

Abstract: The utility model relates to a crank type thread swinging pin gear speed reducer which is formed by connecting a fixed shaft gear train of a straight gear and a few teeth difference planetary gear train of a thread swinging pin gear in series. The utility model adopts N parallelogram input mechanisms connected in parallel, which are composed of a coupling straight gear of an input shaft, N (N=2, 3, 4) synchronous straight gears, N crank shafts and 2-4 planetary wheels. The aims of any value of single-stage speed ratio in i=9-250, transmission efficiency reaching more than 90-93%, long service life of a rotary arm bearing, small additional dynamic load, good machining process and serial products of high power transmission of more than 100KW can be realized through the direct output of a pin gear or a pin gear shaft.

Multi-functional combined reducer for breathing apparatus

Abstract: The utility model relates to a portable multi-functional combined reducer for breathing apparatus, which is formed by combining and integrating a pressure reduction device, a safety valve, a pressure indicating apparatus and a residual gas warning device, and no pipes are used. The utility model has the advantages of reasonable design, compact structure, small size, high safety and good gas tightness. The gas supply with fixed quantity in a fixed quantity hole type can be realized, and the high flow rate output, which is more than 300l/min, can be realized by enlarging the output aperture; output flow rate can not be reduced because of frosting during the long time high flow rate output.

Riding cage for elevator

Abstract: PURPOSE: To enhance transverse oscillation performance during running of a riding cage by providing a horizontal directional dynamic vibration reducer, in which a natural frequency is set to agree with vibration of periodic vibratory excitation force excited from a guide rail, in at least one of the peripheral parts in a floor of the riding cage. CONSTITUTION: A dynamic vibration reducer 6, which comprises a spring 6a, mass 6b, roll 6c for moving this mass with no resistance in the horizontal direction and a bracket 6d, is provided in the lower part of a floor 4a in a cage room 4. While this dynamic vibration reducer 6 is provided in the peripheral part of the floor 4a. ln this way, periodic vibratory excitation force from a guide rail 2 is effectively absorbed by the dynamic vibration reducer 6 with a large effect of reducing transverse oscillation in the peripheral part of the floor 4a. COPYRIGHT: (C)1991,JPO&Japio

X-ray reducer

Abstract: PURPOSE:To plan the restraint of dispersion X-rays by detecting pixel concentration further outside of the area which is set on the picture image which is examined by fluoroscopy or photographed and controlling the position of an X-ray reducer in order that the pixel concentration is made predeterminated value CONSTITUTION:Upper and lower lead plates 1A1, 1A2, righthand and lefthand lead plates 1A3, 1A4 and driving circuits 1B1, 1B2 are prepared in a reducer 1, and X-rays whose, irradiation area is restricted by the reducer 1 are guided to an image intensifier 2, through the examine stored in an image memory 5 through an A/D converter 4 and shown on a monitor 7 by image processing, ROI setting is previously performed on an image by an interesting area (ROI) setting circuit 8, and outside pixel concentration of ROI is detected by a pixel concentration detecting circuit 9 to control the reduction of the reducer 1 through a control circuit 10 Therefore, dispersion X-rays can be controlled

Pressure reducer for liquid and compressed gases

Abstract: A pressure reducer designed to feed gas-driven vehicles, of the type comprising an inlet valve, an outlet valve, and a gas by-pass valve, wherein the valvular closing elements are fitted with systems designed to connect areas situated on opposite sides of the valvular closing elements in order to cancel out the force components due to the gas pressure, and systems designed to regulate the opening of the valvular elements according to the pressure detected at the outlet.

Device for mechanically rocking young children

Abstract: The device can be fitted to one of the parts (1) of a child's carriage such as a pusher, cradle or perambulator. It comprises an electric motor (2) which, by means of a speed reducer (3) which imparts a rocking motion to a rotary drive shaft (7). A clutch system (5) serves to couple the shaft (7) with a wheel (4) of the carriage so as to impart a regular to-and-fro movement to the latter. The power supply to the motor (2) is controlled by a timer case (9) with remote-control element (22) or voice-operated element (23).

Gas insulated transformer

Abstract: PURPOSE:To obtain required cooling characteristics with as small a gas blower as possible by increasing the diameter of a lower cooling pipe gradually toward the insulating gas flowing direction to reduce a pressure loss of the insulating gas flow due to a sudden expansion at a connection between the lower cooling pipe and a tank, and by reducing a pressure loss due to a sudden rounded shrinkage of the inside of the tank at the connection in an insulated part between the upper cooling pipe and the tank at a connection between the upper cooling pipe and the tank at a connection between the upper cooling pipe and the tank. CONSTITUTION:A main body of a content which is constituted of an iron core 1 and a winding 2 wound round the iron core 1 is stored in a tank 3 together with insulating gas 4. Inside the tank 3, a differential pressure is formed between an entrance and exit of the insulating gas 4 and the main body of the content and the inner face of the tank 3 are separated up and down by a partition board 8 to cause the insulating gas to flow compulsorily into the iron core 1 and the winding 2. A gas cooler 5 is connected to the outside of the tank 3 through a gas blower 6. In connecting the tank 3 and a lower cooling pipe 10 which connects the gas cooler 5 and a lower part of the tank 3, a reducer is connected to the lower cooling pipe 10 to increase the diameter of the pipe gradually.

Machinery pressure baler

Abstract: The utility model provides an improved machinery pressure baler, which is suitable for packaging the hemp, the silk, the fur, the cotton and the finished product of the textile industry. The machinery pressure baler adopts the driving structure of a cycloid speed reducer and a tube axis to replace the worm and gear driving of the original technology, and thus the pollution of the oil can be completely avoided. The utility model has the advantages of high efficiency, compact structure, tidiness and cleanness.

Apparatus for pneumatically transporting high-density powdered or granular materials

Abstract: An improvement in an apparatus for pneumatically transporting powder held in an air-tight storage container (3) to a collector (6) through a transportation tube (5), which is provided at its intermediate part with a vertically rising tube member (5b), by usinga gas pressure. The transportation tube (5) consists of a lower tube member (5a) having a tapered tubular accelerating reducer (71) and connected to the container (3), an upper horizontal tube member (5c) connected to the collector (3) and having at its starting end an inversely tapered tubular decelerating reducer (74), and the vertically rising tube member (5b) connecting these lower and upper tube members (5a, 5c) together. The tube member (5b) is provided at an intermediate part thereof with an inversely tapered tubular decelerating reducer (72), and an acceleration regulating reducer (73A) having a tapered tubular accelerating part above the bottom including a constricted part (73b), said reducers (72, 73A) being vertically connected.

New tissue section knife grinding machine

Abstract: The utility model relates to a knife grinding machine for a tissue section knife, which belongs to a medical device. The utility model simulates people's actions to automatically carry out grinding operation on the front surface and on the back surface. A motor and a speed reducer are arranged in a closed shell; a crank connection rod changes rotation into longitudinal and transversal reciprocating movement; a knife is turned when a chainwheel meets the knife turning segment of a chain; a right angle swing rod turns, a knife clamp clamps a section knife to move in the longitudinal direction, and a grinding plate moves in the transverse direction; the knife is circularly ground on the grinding plate and forms an S-shaped track. The utility model is provided with a mechanical pressurizing damping device, a knife angle is adjusted by a chain of the chain and the chainwheel, and a brake lever and a relay control the timing. The utility model automatically turns to the back surface grinding and the stopping after the front surface grinding; all parts can be conveniently processed and produced, and the knife grinding effect is superior to the existing knife grinding machine.

Small brick making machine with single screw and changeable diameter

Abstract: The utility model discloses a small brick making machine with single screw and reducer, which belongs to the technical field of brick making machine manufacture. The utility model is characterized in that a reducing reamer is adopted; the reducer of the reamer of the feeding parts has a small diameter and a big screw pitch; the reducer of the reamer of the discharge molding part has a small screw pitch and a big diameter. The utility model enhances the pushing out of the earth material and the mechanical applications. The utility model solves the problems that the swing, low squeeze output, great power consumption of the prior art of the small and medium size brick making machine. The utility model has the advantages of good raw brick quality and energy saving.

New structure seal smelting machine

Abstract: The utility model discloses a banburying mixer with new structure, belonging to a core device of rubber and plastic extracting workshop The banbury mixer is characterized in that a motor [10] and a speed reducer [9] are directly connected with each other; the speed reducer and a gear shaft [8] are directly connected with each other; a motor rotor winding drives load to start in a series resistance mode, and the speed reducer [9] is a mixed few-gear differential planet speed reducer invented by the utility model unit The banburying mixer has the advantages of compact structure, small ground occupation and long service life The starting current of a main motor is below 50 ampere; with a stable turnover device, the utility model can be widely applied to medium and small sized rubber shops and plastics plants, in particular to the medium and small sized rubber shops and plastics plants where have insufficient power and not large workshops

Pneumatic clutch control device

Abstract: Pneumatic clutch control device having a control operated by the foot via a pedal (4), and a clutch with at least one disc, characterised in that it comprises an adjustable pneumatic pressure reducer (14) of the 3/2 type controlled by the said clutch pedal (4), a pneumatic jack (8) acting on the clutch mechanism (13), and a pneumatic circuit having a duct (19) for supplying the pneumatic pressure reducer (14) with compressed air, and a duct (20) for supplying the pneumatic jack connecting the latter to the said pneumatic pressure reducer (14) which has an orifice (3) for connection to the atmosphere such that, in the clutch-engagement position (pedal 4 at rest), the duct (20) for supplying the pneumatic jack (8) is brought into communication with the orifice (3) for connection to the atmosphere, and such that during the displacement of the clutch pedal (4), the pressure reducer (14) is arranged so as to establish the communication between the duct (19) for supplying the pressure reducer (14), and the duct (20) for supplying the jack (8), in such a way as to obtain a development of the supply pressure of the jack (8) which follows a law determined as a function of the travel of the pedal (4); the said pressure acting on the jack (8) which is arranged so as to obtain a displacement of the clutch mechanism (13) which follows a law determined as a function of the said pressure.

Apparatus for pneumatically transporting powder by high-concentration gas

Abstract: An improvement in an apparatus for pneumatically transporting powder held in an air-tight storage container (3) to a collector (6) through a transportation tube (5), which is provided at its intermediate part with a vertically rising tube member (5b), by usinga gas pressure. The transportation tube (5) consists of a lower tube member (5a) having a tapered tubular accelerating reducer (71) and connected to the container (3), an upper horizontal tube member (5c) connected to the collector (3) and having at its starting end an inversely tapered tubular decelerating reducer (74), and the vertically rising tube member (5b) connecting these lower and upper tube members (5a, 5c) together. The tube member (5b) is provided at an intermediate part thereof with an inversely tapered tubular decelerating reducer (72), and an acceleration regulating reducer (73A) having a tapered tubular accelerating part above the bottom including a constricted part (73b), said reducers (72, 73A) being vertically connected.

Long-stroke cylinder oil pump

Abstract: The utility model discloses a long-stroke cylinder oil pump which is composed of an electric motor (I), an automatic direction speed reducer (II), a crown block mechanism (III), and a support frame (IV). The utility model is characterized in that an automatic reversing speed reducer is utilized to replace the speed reducer and the four connecting rod mechanism of the original beam dyeing type oil pump, and a crown block mechanism is utilized to increase the length of stroke. Owing to the new improvement of the driving structure, the oil pump overcomes the defects of large volume and high energy consumption of a beam oil pump owing to the motion characteristic of the four connecting rod mechanism. The utility model has the advantages of simple structure and convenient maintenance, the load carrying performance is good, the stroke is long, and the energy consumption is just 1/3 of the beam oil pump.

Installation for ultrasonic dimensional treatment

Abstract: An apparatus for ultrasonic dimensional treatment is designed for processing a workpiece of mono- and polycrystals. It comprises a frame of protal type (1), longitudinal (3) and transversal (2) displacement carriages, an acoustic head (4), a replaceable doser. The installtaion is also provided with a mechanism of setting displacements (6) along three coordinates, a telecamera with a set of elongating rings (7). It also comprises an electrical cabinet with an ultrasonic generator (9) and an apparatus of program control. A monitor unit is mounted on a rotary bracket. A mechanism for setting a clamping force (Fig. 2) ensures the necessary clamping force of a roller support (12) to be applied to a projection of a working table (15). Position of the pressure roller (16) is determined by the displacement of a movable carrier (20) being rigidly coupled with a gear rack (21) which engages a gear wheel (22) being mounted on a shaft of a reducer (23); the reducer being driven by a step electric motor (24). A calibrating weight (25) on a lever-rocker (13) is designated for selecting optimum operating conditions. A mechanism for feeding the working table ensures its rising by means of a lever (26) abutting a shaft (27) of a one-step reducer (28) driven by an additional step motor (29).

All-automatic multi-function key milling machine

Abstract: The utility model discloses the reforming technique of a key milling tooth machine. On the original base of a hand wheel, a milling cutter, an imitation shape rod and a work table, new components are added, comprising an electric motor, a speed reducer, an eccentric wheel and an eccentric wheel control rod. A spring slice and a positioning screw is also added on the work table, making the whole device become automatic production. The utility model has the advantages of high precision, high work efficiency, compact structure, flexible operation, convenient operation and multifunction and formulates a key in 30 seconds.

All-hydraulic drilling machine

Abstract: The utility model discloses an all-hydraulic drilling machine, comprising a pump station, a console, a machine frame, a column, a gyrator, a drilling rig, etc. A rotary type structure with an A-shaped machine frame, and a double cylinder guide rod is adopted by the all-hydraulic drilling machine. The gyrator part comprises an oil motor, a gyrator speed reducer, a hydraulic chuck, a thrust cylinder, a water swivel, a guide rod, and a hydraulic clamp holder. The utility model has the advantages of high reliability, low labour intensity, high efficiency and intensity, and convenient and rapid installation and angle adjustment. The all-hydraulic drilling machine realizes the full mechanization of disassembling and assembling the drill rod, applying to the drilling of pumping drainage of the fire damp, the drilling for preventing the grouting and the coal seam infusion, the water exploring hole, the cable hole, the guide hole, and the geological exploration hole.

Cam running pulley speed reducer

Abstract: The utility model relates to a cam running pulley speed reducer which is equivalent to a harmonic drive reducer. A shock-wave generator is the cam which approximates an ellipse, and the moving trace is equivalent to the double-wave drive. A set of steel running pulleys and steel circle wheels compose a movable type outer roller gear which substitutes a flexible outer gear, and an inner roller gear substitutes an inner gear. The cam running pulley speed reducer has large drive power, small rolling friction and loss. The utility model has the advantages of small size, simple manufacturing process and big drive ratio. The drive ratio can be 5 to 1000. The cam running pulley speed reducer has no special requirement for the material, and the cost is 60% lower than the equal product. The cam running pulley speed reducer can be widely used for various industries, such as mines, the metallurgy, the machine-building and electronics industries, the petrochemical industry, the transport, etc.