Showing papers on "Reducer published in 1972"

Electric powered wheel

Abstract: A compact electric wheel unit using a high torque, moderate speed inside out electric motor and a planetary speed reducer wherein a friction brake is mounted on a stationary ring gear component of the planetary gearing. In one embodiment, lubricating and cooling fluid is circulated through the motor, gear train and brake.

Multi-stage speed reducer with resilient shaft supports

Abstract: A multi-stage speed reducer drive comprising a reduction stage coupled to a first and second planetary gearing stage. The power take-off end of the second planetary gearing stage at the output end of the system yieldingly resiliently journals the center gear of that stage. The first planetary gearing as an intermediate stage, has also a web gear which is secured to the center gear of the output stage and is additionally mounted for pendulum movement. A simple speed reducing gear drives the center gear of the intermediate stage.

Intermediate right angle speed reducer

Abstract: A right angle speed reducer incorporates speed change gears in a first speed reduction stage, a third speed reduction stage for driving the output shaft, intermediate right angle spiral bevel reduction gearing interconnecting the first and third reduction stages, all tapered roller bearings, splash lubrication of all high speed bearings, and a dry well output for the lower output shaft bearing.

Right angle speed reducer

Abstract: A right angle speed reducer incorporates speed change gears for varying the output shaft speed, spiral bevel gearing, all tapered roller bearings, splash lubrication of all high speed bearings, and a dry well output for the lower output shaft bearing.

Fan drive assembly

Abstract: A fan drive assembly specifically designed for cooling towers. The fan drive assembly includes: A FAN MEANS, HAVING A PLURALITY OF BLADES ASSOCIATED THEREWITH; A MOTOR MEANS FOR DRIVING THE FAN MEANS, POSITIONED BELOW THE FAN MEANS WITHIN THE STREAM OF AIR FLOW; AND A SINGLE REDUCTION PARALLEL SHAFT GEAR REDUCER MEANS MOUNTED IMMEDIATELY BELOW THE FAN MEANS FOR CONNECTING THE FAN MEANS TO THE MOTOR MEANS.

Variable speed reducer

Abstract: A worm rigid with an input shaft bites into the surface of a tapering elastomeric body (e.g. of neoprene), with straight or arcuate generatrices, connected to an output shaft. The worm is journaled in a carriage which is displaceable, manually or automatically, along a generatrix of the tapering body to vary the step-down radio between the two shafts.

Pipe bending method and device

Abstract: 1,270,059. Angular bending. A. I. GALPERIN, L. V. VISHNYAKOV and B. V. POKROVSKY. 4 Aug., 1970, No. 37509/70. Heading B3E. A method of cold bending pipes comprises introducing a device with bending elements, into the pipe, bending the pipe by actuating said elements and moving said device freely inside the pipe after bending for the next bending operation. The device comprises a rigid frame 1 mounted on spring-loaded wheels 2 and is driven through the pipe by an electric motor 21 through a speed reducer 22 coupled to one of the wheels. Secured to the middle of the frame is a bending shoe 7 facing the stretching portion of the pipe 6. On the ends of the frame are located the bending elements comprising two hydraulic cylinders 8 mounted for swinging on rolls 9 and held in the vertical position by springs 10. The cylinders carry articulated segment heads 12. Expansion mechanism installed in the middle of the frame for improving the stability of the pipe wall under compression during bending comprises three vertical 13 and six horizontal 14 hydraulic cylinders carrying articulated curved segment heads 16. The vertical cylinders 13 are connected by rods 18 to the bending shoe 7 and all cylinders are powered by an electric motor 20 (Fig. 6, not shown). Guide rollers 23 locate the frame in the tube. In operation the pipe 6 is placed on supports 24 one of which has a seat 25 for accommodating the device at the beginning and end of the operation. The device is rolled into the pipe and stops adjacent the seat 25 whereupon the segment heads 16 are expanded into contact with that part of the pipe to be deformed. The segment heads 12 of the bending element are actuated to bend the pipe (Fig. 8). The end of the pipe rising during bending is supported by a hoist 27.

Hollow steel alloy pipe reducer

Abstract: Molten alloy steel is poured into a frusto-conical mould which has external stub axles. The outer edge of the steel is allowed to solidify to the desired thickness and the mould tilted on the stub axles to remove the remaining molten metal. The hollow conical cast is machined to bore or remove its lower portion, and a tapered pipe reducer with parallel ends thus formed. Specifically the pipe reducer is used to join two pipes of different diameters, particularly in the construction of chemical plants.

Steering gear of four-wheel tractor

Abstract: A steering gear wherein the steering shaft is alternately connected via a hydraulic servo unit and a shift coupling with a steering linkage and with a gear speed reducer installed on a shaft articulated to the front axle of the tractor.