Showing papers on "Reducer published in 1998"

Fire door operator having an integrated electronically controlled descent device

Abstract: A fire door opener and method of electronically controlling the door descent speed is described. The operator includes a DC brake solenoid coupled to an AC motor drive system with an inline gear reducer and an electronically controlled descent device with battery backup power. If the brake is disengaged, the door will drop by overcoming the internal inertia and friction in the inline gear reducer. Speed of descent is controlled electronically by measuring the descent speed of the fire door at its limit shaft and electrically modulating the brake engagement using the DC solenoid.

Combined variable-speed drive and speed reducer for pumps and fans

Abstract: A variable speed drive for fans and pumps. An impeller is connected to a primary motor and an auxiliary motor/generator through a transmission. The transmission includes an epicyclic gearing system. The primary motor is run at constant speed. The auxiliary motor/generator is driven at variable speeds to control the speed of the impeller. The device may be used to retrofit an existing pump or fan system.

Circuit and method of modulo multiplication

Abstract: A co-processor (44) executes an arithmetical algorithm that computes modular exponentiation equations for encrypting or decrypting data. A pipelined multiplier (56) receives sixteen bit data values stored in an A/B RAM (72) and generates a partial product. The generated partial product is summed in a summer (58) with a previous partial product stored in a product RAM (64). A modulo reducer (60) causes a binary data value N to be aligned and added to the summed value when a particular data bit location of the summed value has a logic one value. An N RAM (70) stores the data value N that is added in a modulo reducer (60) to the summed value.

Flow reducer member, in particular for a receptacle containing a cosmetic, and a method of manufacture

Abstract: A dispenser head for dispensing a fluid includes a dispenser endpiece of rigid or semi-rigid thermoplastic material and a flow reducer member of elastically deformable thermoplastic material secured to the endpiece. The member includes at least one slot whose edges are suitable for moving apart under the effect of thrust from the fluid while it is being dispensed. A method of making the dispenser head includes making the flow reducer member by injection molding from one or more injection points situated on one or both sides of the slot.

Knockdown portable liquid drywall material spray system apparatus and method

Abstract: The invention is a compact, self-contained, portable, electrically powered, knockdown spray application machine/system for spraying liquid material on to surfaces. The spray system comprises a frame with wheels for supporting and transporting the components thereof. The spray system is powered by an electrically activated motor which includes a motor drive shaft disposed about a motor drive shaft axis. Attached to the motor is a gear reducer having a driven end and a drive end wherein the driven end is configured to receive and engage the motor drive shaft. The drive end includes a gear reducer drive shaft that rotates responsive to electrical activation of the motor. Coupled directly to the drive end of the gear reducer is a pump comprising a pump housing. The pump housing is shaped to define a containment chamber for receiving and containing liquid material therein. The pump housing also defines an inlet port for receiving and directing liquid material into the containment chamber. Mounted to the pump housing is a stator, the stator being mounted to the pump housing such that it is in communication with the containment chamber. Within the stator is a rotor disposed for rotation about a pump rotation axis responsive to rotation of the gear reducer drive shaft.

Electric power-assisted bicycle

Abstract: A kind of electric power-assisted bicycle is presented in the invention. Its characters consist in that: the electric-driving device 2 is composed of the flat motor installed in the shell and harmonic reducer; the shell body and storage battery are fixed in the middle of the frame; its center shaft crosses the flat motor and the harmonic reducer along with the axis line separately, and can rotate relatively to them; the mentioned flat motor is connected with the power-transmitting device through the harmonic reducer. The entire bicycle is lightweight and long-life, while it is also energy saving high efficient and can be conveniently assembled, used, carried and maintained.

Quick catalytic dechlorination of poly-chloro-organocompound in water using zero-valence Fe and pd catalyst

Abstract: A high-speed catalytic dechlorination process for removing organic polychlorine compounds from water uses Pd as catalyst, zero-valence iron as reducer and carrier, e. g. activated carbon, ceramic, orzeolite. They are mixed to prepare filler. The process includes loading the filler in fixing tower until its thickness is 300-8000 mm and flowing sewage through the filler layer for 3-10 min. Its advantages are quick treatment, high effect, less occupied ground, simple process, less consumption and low cost.

Motor-driven reducer for motorised and automatic installations of awnings, window blinds and the like

Abstract: of EP0921266It consists of an integrated circuit (6) made up of a power supply (7) connected by two wires plus the earth leakage one, signal receiver (8) connected in line to the RF amplifier (9), an AM detector (10), a LF amplifier (11), a computer (12), a decoder (13) and a power stage (14). The integrated circuit (6) is incorporated onto the motor-driven reducer (4) itself or onto its outlet shaft (3), of the awnings, window blinds or the like (1), being operated by means of a radio remote control (34) or a series or emitting sensors driven in turn by an anemometer (27), a photosensitor (28), a thermometer (29) and a rain detector (30).

Joint torque detection system

Abstract: A joint torque detection system having a plurality of post-like members disposed around an axis of a joint which connects two links. The plurality of post-like members deform or twist when a torque is imparted to one of the links. An electric motor is fixed at one of the links and the motor rotation is reduced by a harmonic-drive speed reducer fixed at the other of the links. The plurality of post-like members are annularly disposed around the joint axis such that they embrace the speed reducer. A gap sensor (displacement detector) is fixed to the second link, close to the speed reducer between the output of the speed reducer and the second link in such a manner that the sensor generates a signal indicative of relative displacement of the speed reducer output (connected to the one of the links) and the second link. With this arrangement, the system can be incorporated in a small link mechanism such as a robot finger link mechanism, with excellent detection accuracy and an elongated service life.

Filling fitting for filling a closed hot-water heating system

Abstract: The invention relates to a filling fitting for filling a closed hot-water heating system, the filling fitting comprising a tube separator including an upstream backflow preventer, a downstream backflow preventer and a drain valve controlled by the inlet pressure and arranged, with regard to the flow, between said two backflow preventers, and a pressure reducer. This construction allows the downstream pressure reducer to be used in two manners, on one hand in connection with the tube separator and, on the other hand, in order to allow the pressure reducer to be removed. By dividing the filling fitting into two fitting portions, of which the second one only comprises the pressure reducer and the downstream backflow preventer, the second fitting portion can also be used alone without tube separator, when the safety requirements are less strict.

Crossed gear reducer

Abstract: PROBLEM TO BE SOLVED: To provide a crossed gear reducer capable of being mounted on a mating machine in a compact manner. SOLUTION: A gear case of a crossed gear reducer 102 is divided into a front stage gear case (a first gear case) 152 for accommodating a front stage bearing (a first bearing) 116 supporting an intermediate shaft 118 so that it can freely rotate, and a rear stage gear case (a second gear case) 154 for accommodating a rear stage bearing (a second bearing) 124 supporting an output shaft 126 so that it can be freely rotated, and an external stepped part D is formed so that the dimensions G2 in the axial direction of the output shaft 126 of the rear stage gear case 154 may be shorter then the dimensions G1 of the front stage gear case 152 by the dimensions G3. In this case, mounting bolt holes 160a to 160d for mounting the crossed gear reducer 102 on a mating machine MM are preferably formed-arranged only on the side of the rear stage gear case 154. COPYRIGHT: (C)2000,JPO

Worm-helical gear reducer

Abstract: A worm-helical gear reducer (1) having a worm (4) in turn having a first shaft (5), and a helical gear (6) fitted to a second shaft (7); the worm (4) being connected to the helical gear (6); the first shaft (5) having a dead hole (10) at a first end (9); and the worm (4) being connectable at the dead hole (10) to a mechanical element of a drive unit; the reducer (1) being characterized in that the dead hole (10) is a single reference hole for a given series of diameters of the mechanical element, and in that an adapting element (14) is interposed between the dead hole (10) and the mechanical element.

Helicopter tail shake vibration compensator has control operating drive to move weight compensating for induced vibration

Abstract: The helicopter rotor vibration reducer has a weight (3) movably connected to the airframe (2) and oscillated by actuators (5). A control (UC) determines the frequency and amplitude of the weight movements to cancel out airframe vibration.

Multiple distributor for low-pressure uses

Abstract: Multiple distributor for low-pressure uses forming part of the equipment of a scuba diver equipped with a self-contained breathing apparatus. A distributor body is connected by a single pipe to the first-stage pressure reducer of one or more cylinders. The body is connected via connectors for with the following: a second-stage pressure reduce for an emergency mouthpiece, a second-stage pressure reducer connected to the diver's mouthpiece, and the inflation connection of a balancing jacket, the air inlet to the latter connection being controlled via an appropriate cut off valve operated by a push-button mounted on the distributor body.

Gas supply device

Abstract: PROBLEM TO BE SOLVED: To control the supply of gas without any trouble, whether a line is connected to a high-pressure gas supply source or a low-pressure gas supply source. SOLUTION: A gas supply device 1 has a connection ferrule 2 for connecting a high-pressure gas supply source, and a connection ferrule 5 for connecting a low-pressure gas supply source. The first pressure reducer 13 is connected to the ferrule 2, and the second pressure reducer 17 is connected to a line downstream of the first pressure reducer 13 via the first shutoff valve 16. On the other hand, the second shutoff valve 23 is connected to the ferrule 5 and a line downstream of the second stop valve 23 is connected to a branch part 18 between the first shutoff valve 16 and the second pressure reducer 17. A cylinder pressure sensor 14 is connected to a high-pressure line 12, and a control part 24 controls the open/close operation of the first and the second shutoff valves 16 and 23, based on pressure detected by the cylinder pressure sensor 14. thereby feeding gas to a human or animal body cavity, with gas pressure maintained at the preset value in the device 1.

Closure for secondary containment pipe

Abstract: A fitting assembly for joining a double containment pipe (DCP), including primary and secondary pipes, to a double containment fitting, including primary and secondary fittings, wherein the secondary fitting has a larger diameter than the secondary pipe. A sealing reducer has a larger diameter end for fitting over the secondary fitting and a smaller diameter end for fitting over the secondary pipe. The sealing reducer is fit over the secondary pipe, the primaries of the DCP and double containment fitting are joined, and then the sealing reducer is positioned over the primary joint and its smaller and larger diameter ends sealed, either by adhesive or a combination of interlocking threaded fitting components and O-rings, to the ends of the secondary pipe and secondary fitting, respectively.

Speed transmission for lawn mower

Abstract: The lawn mower speed transmission is located between the blade carrier primary driven shaft (10) and the output shaft of a reducer (8) coupled to the wheels. The transmission is composed of a first endless belt (T1) between the primary shaft and a relay unit (3) with a free pulley (4) having multiple grooves (4E,4F). One of the pulley cheek webs (4C) has a variable spacing controlled automatically by a second endless belt (T2) between the pulley and the reducer input shaft (12). This second transmission has a pulley (6) on the reducer input shaft. One of the cheek webs (6A) of this pulley has a manually controlled spacing.

Image forming apparatus with dynamic vibration reduction

Abstract: An image forming apparatus including a rotatably driven transfer drum is provided. The transfer drum includes a main body and a dynamic vibration reducer. The dynamic vibration reducer includes an inertia pipe having an inertial moment, and at least one element connecting the inertia pipe to the interior of the main body so as to provide a spring-like property and a damping property therebetween. The apparatus dynamically reduces vibrations in a predetermined frequency band, such as that of the natural frequency of a specific gear, or the natural frequencies of an entire drive mechanism. In particular, the apparatus reduces vibratory peaks generated during the operation of the image forming apparatus.

Motor vehicle starter with an epicyclic reducing gear train including a torque limiting device

Abstract: A starter for a motor vehicle comprises an electric motor having an output shaft which drives a coaxial starter head through a speed reducer. The speed reducer incorporates an epicyclic gear train, including a cylindrical casing within which the internally toothed crown wheel of the epicyclic gear train is mounted in rotation. The crown wheel is coupled in rotation to the casing through a friction type torque limiting device, which is interposed axially between the crown wheel and a transverse plate of the casing. The torque limiting device includes at least one annular transverse friction surface of the crown wheel, which is biased elastically into axial engagement against a reaction surface coupled in rotation to the casing.

Complex stage harmonic gear mechanism

Abstract: The utility model relates to a complex stage harmonic gear mechanism which belongs to the mechanical transmission of the gear. The utility model solves the problem that the transmission ratio of the harmonic gear mechanism is changed from 150 to 2000. The realizing method is that a double module complex stage harmonic gear mechanism is adopted, and the modules of gears of an input stage and an output stage are different, or the module of the gear of the output stage is bigger or smaller than the module of the gear of the input stage. The utility model is used for the mechanical transmission of a speed reducer, and realizes the continuous change of the transmission ratio within the range from 150 to 100000.

Multifunctional machine tool for machining aluminium section

Abstract: The utility model relates to a multifunctional machine tool for machining aluminium section, which is used for machining the aluminium section. The utility model is composed of a motor 16, a transmission mechanism, a clutch 7, an upper layer plate 25, a lower layer plate 21 and a middle plate 2, wherein the motor 16 fixedly arranged on a bottom beam 14 is connected with a speed reducer 9 by a belt 11. The number of guide posts 23 is two to six, wherein one end of each of the guide posts is fixedly connected with the top surface of the lower layer plate 21 and the other end of each of the guide posts is fixedly connected with the bottom surface of the upper plate 25. The middle plate 2 is movably sheathed with the guide posts 23 by a sliding sleeve, and a pedal 12 arranged on the bottom beam 14 is connected with the clutch 7 by a drive rod 13. The utility model completely substitutes a traditional electric hand drill, a traditional milling and drilling machine and a manual extruder which is adopted in recent years. The utility model has the advantages of reducing the working processes, lowing the labor intensity and improving the work efficiency. Thus, the market prospect and the application range of the utility model are wide.

Auger earth boring machine with improved efficiency and safety

Abstract: The boring machine is disclosed which includes a power and control unit having a power source which uses a large electrical motor, a large hydraulic pump and a torque convertor connected to a speed reducer which controls the speed and torque provided to the auger and cutting head. A second small electrical motor and small hydraulic pump are used to power two hydraulic cylinders for pushing the string of pipe casings into the bored hole using a master pusher. A structural protector frame provides safety protection for an operator seated within the power and control unit. A control console is used by the operator for operating and controlling the boring machine and the direction of the string of pipe casings in the bored hole. Steering and pipe control cables extend into the bored hole from a wire spool mounted on the front of the power and control unit. A generator power by a diesel engine located outside the pit area provides electrical power for the electrical motors. The result of this new power and control unit accomplishes the objectives of a safe and efficient boring machine and boring operation.

Conveying vehicle for external-coated steel pipe

Abstract: The utility model relates to a conveying vehicle for external-coated steel pipes, which is particularly suitable for conveying and dropping the external-coated steel pipes of epoxy coal bitumen, or liquid paint with a long solidifying cycle. The utility model is composed of a trolley A and a trolley B which comprise trolley bodies, driving wheel assemblies, driven wheel assemblies, lifting frames, guiding wheels, lifting cylinder assemblies, solenoid electric valves, riding wheel assemblies, pipe drawing assemblies, space adjustment frames, and connecting rods. Besides, the trolley B also comprises a pipe shield assembly, a riding wheel drive speed reducer, a clamping device, pulley wheels, etc. The utility model has the advantages of easy operation and high speed of conveying and dropping. The coating of steel pipes can not be damaged.

Machine for finishing nonmagnetic components

Abstract: On a conventional chassis (10) forming a rigid structure there is mounted an electromotor (12) whose rotary shaft is coupled to a reducer (13) whose output end (14) is secured via suitable means to a flat (23); on this chassis (10) there is a stationary cylinder (15) on whose lateral surface (15a) there are magnets (16-17); inside (15) there is tank (18) which rotates through the action of the shaft of the reducer (13), small flanges (30) being located on the end wall (18a) of (18), a support (25) with arms (24), from which iron chains (32) hang, being arranged on the threaded column (27), the machine being intended for the polishing and cleaning of nonmagnetic materials of the type used in jewelry, such as gold, silver, alloys thereof and the like.

Power assist apparatus for motor vehicle steering shaft

Abstract: A power assist apparatus (30) for a motor vehicle steering shaft (24) including a speed reducer housing (32) mounted on a steering column (12), an electric motor (72) on the speed reducer housing, and a speed reducer (62) consisting of a worm gear (64) and a worm wheel (80). The worm gear is supported on the speed reducer housing for rotation with an output shaft of the electric motor. The worm wheel is rigidly connected to the steering shaft. The steering shaft is rotatably mounted on a bearing carrier (90) having a cylindrical pilot (92) which cooperates with a cylindrical journal (42) on the speed reducer housing in rotatably supporting the bearing carrier on the speed reducer housing. The cylindrical pilot is eccentric relative to a longitudinal centerline (48) of the steering shaft so that the steering shaft and the worm wheel traverse a circular orbit in the plane of the worm wheel when the bearing carrier rotates relative to the speed reducer housing. The circular orbit of the worm wheel has a component perpendicular to the worm gear to eliminate lash therebetween. The position of the bearing carrier relative to the speed reducer housing is captured by a ring (98) clamped to the speed reducer housing over the bearing carrier.

Vertical shaft multi-driven planetary concrete mixer

Abstract: The utility model provides a vertical shaft multiple drive planetary concrete stirrer which mainly comprises a tank body, a stirring supporting body arranged on the tank body and a plurality of groups of stirring mechanisms uniformly arranged on the top part of the stirring supporting body, wherein, each group of stirring mechanism is composed of a motor, a speed reducer, a rotary support, a revolution body and a stirring shaft, the stirring supporting body is fixedly provided with an external gear ring, and a drive gear engaged with the external gear ring is fixedly connected to the stirring shaft of each group of stirring mechanism. Groups of stirring mechanisms adopted dispersedly undertake required stirring power and reduce the transmission load of the speed reducer, and requirements to the manufacture of the utility model are lowered. The technical proposal of the utility model is especially suitable for manufacturing large-scale concrete stirrers of which a parameter is above 1.0m .

Hydraulic alternating volumetric pumping system

Abstract: Pumping system for pumping fluids at low pressure comprising a pumping enclosure connected to a pipe 16 introducing the fluid to be pumped and a pipe 18 discharging the pumped fluid. The enclosure is connected to a pipe introducing a drive fluid and a reducer (P 1 , P 2 ) of the drive fluid pressure transmitted to the pumped fluid.

Weaving paper-making one-shaper for high-strength ribbed packing bag paper

Abstract: An one-step shaping machine for braiding rib net and making paper in order to making high-strength ribbed packing paper is composed of rib net braiding unit and paper forming unit. Said rib net braiding unit comprises unwinding reel, distribution roller, sleeve tube, shape fixator, rotary mainshaft, rotary bench, and speed reducer of motor. Said paper forming unit consists of frame, multiple rollers, upper and lower shaping nets, ring felt and speed reducer of motor. The braided rib net is compounded with upper and lower paper pulp. Its advantages are simple structure, low cost and high strength of finished packing paper.

Power head rest device

Abstract: PROBLEM TO BE SOLVED: To reduce the inside space and weight of the back frame of a seat and to lower the cost through the reduction in the number of parts by arranging a pipe type motor in the position shared with the back frame pipe, i.e., a reinforcing member, transmitting the motor output to the feed screw through the deceleration/magnification, and vertically moving the head rest by that feeding. SOLUTION: This device is so constituted that the back frame 3, which is a reinforcing member of the seat, and a pipe type motor 6 are integrally arranged in a shared position and that the output of this pipe type motor 6 is reduced and magnified by a speed reducer. This output is imparted to a feed nut rotatably through a worm wheel 5, thereby moving the head rest 1 vertically by the screw 2a of a supporting post 2 from the head rest 1.