FAIRFIELD MANUFACTURING COMPANY, INC.
|FAIRFIELD MANUFACTURING COMPANY, INC. Patent applications|
|Patent application number||Title||Published|
|20140323262||OVERLOAD PROTECTION - An overload protection device in combination with a prime mover and gearbox transmission supplies torque through a gearbox transmission to a load. An input shaft with is driven by the prime mover and rotates therewith. An external spline on the input shaft mates with an input gear having an internal spline. Upon overload of the gearbox transmission, the input shaft fractures an annular groove in the input shaft. A bushing prevents travel of the portion of the input shaft which is driven by the prime mover and which continues to spin after the fracture.||10-30-2014|
|20140244082||HYBRID ELECTRIC VEHICLE - A hybrid electric vehicle includes a high voltage DC bus and an internal combustion engine. The internal combustion engine is mechanically coupled to a non self-excited generator/motor which is preferably a switched reluctance machine. A power inverter electrically and bidirectionally couples the high voltage DC bus to the non self-excited switched reluctance generator/motor. Front and rear axle dual DC-AC inverters electrically and bidirectionally couple two traction AC non self-excited switched reluctance motors/gear reducers to the high voltage DC bus for moving the vehicle and for regenerating power. An ultracapacitor coupled to the high voltage DC bus. A bidirectional DC-DC converter interposed between a low voltage battery and the high voltage DC bus transfers energy to the high voltage DC bus and ultracapacitor to ensure that the non self-excited switched reluctance generator/motor operating in the motor mode is able to start the engine.||08-28-2014|
|20140208894||Torque Sharing Drive And Torque Sharing Process - A torque sharing drive and process for sharing torque accommodates tooth inaccuracies on the rack and outer pinions. A driving pinion mates with first and second gears. The driving pinion is radially, bidirectionally, movable in response to gear separation forces only along the line between the centers of the driving pinion, the first gear and the second gear. First and second outer pinions are rotatable with the first and second gears, and as the driving pinion moves radially toward the first or second gear in response to gear separation forces, the first or second gear is angularly and rotationally advanced with respect to the other gear accommodating inaccuracies in the teeth of the rack and outer pinions. Alternatively, when gear separation forces are balanced, the driving pinion resides approximately equidistantly intermediate the first and second gear and the first and second outer pinions are approximately in phase.||07-31-2014|
|20140079499||SMILLED SPLINE APPARATUS AND SMILLING PROCESS FOR MANUFACTURING THE SMILLED SPLINE APPARATUS - By combining shaping and milling actions, or smilling, the cutting tool can move through the entire usable portion of the spline and machine a tool relief into the face of the adjacent feature such as a shoulder before retracting, reversing direction, and repeating the cycle. The smilling apparatus and manufacturing method eliminates the need for an annular spline relief and the full length of spline engagement can be utilized for strength. The effective width of the spline connection apparatus manufactured by the smilling process conserves space and increases the load carrying capability of the spline connection.||03-20-2014|
|20130324354||ROADHEADER GEARBOX - A gearbox includes a shaft input spherical bearing and a shaft output spherical bearing enabling the ring gear to float within the housing and not engage the housing. The shaft output spherical bearing permits angular displacement of the output shaft with respect to the longitudinal axis of said output shaft. A spline connection enables the ring gear to pivot with respect to the cover. Loads transmitted to the housing of the gearbox are not transferred to the gear systems and the gear systems self-align within the housing.||12-05-2013|
|20130319150||OVERLOAD PROTECTION - An overload protection device in combination with a prime mover and gearbox transmission supplies torque through a gearbox transmission to a load. An input shaft with is driven by the prime mover and rotates therewith. An external spline on the input shaft mates with an input gear having an internal spline. Upon overload of the gearbox transmission, the input shaft fractures an annular groove in the input shaft. A bushing prevents travel of the portion of the input shaft which is driven by the prime mover and which continues to spin after the fracture.||12-05-2013|
|20130161148||PLANETARY GEARBOX WITH INTEGRAL SERVICE BRAKE - A brake mechanism includes a fixed housing in which the brake mechanism substantially resides. A plate closes the fixed housing and includes a cylindrical portion extending partially within the fixed housing. A parking piston and a service piston are employed to act against a brake stack which includes a plurality of stators and rotors interleaved together. A wear adjuster is press-tit onto the cylindrical portion of the plate and engages the service piston daring actuation of the service piston and compensates for wear of friction material from the rotors or stators such that the distance between the service piston and the brake stack is substantially the same during the life of the brake mechanism. If neither the service piston nor the parking piston engage the brake stack prohibiting rotation of the input drive, the planetary gear set drives the rotating output drive with respect to the fixed housing.||06-27-2013|
|20120308731||ADHESIVE APPLICATOR FOR THREADED DEVICES AND PROCESS FOR APPLYING ADHESIVE TO THREADED DEVICES - An adhesive applicator includes a base portion and an adhesive distributing portion. The base portion includes a first passageway extending from the exterior of the base portion to and through an integral cylindrical portion of the base portion. The adhesive distributing portion includes a plurality of passageways therethrough in communication with the first passageway of the base portion. The plurality of passageways of the adhesive distributing portion extend to the exterior of the adhesive distributing portion. An adhesive pump forces adhesive to and through the first passageway of the base portion and into and through the plurality of passageways of the adhesive distributing portion to the exterior of the adhesive distributing portion. Adhesive emanates from the exterior of the adhesive distributing portion under the force of the adhesive pump and coats the threads of an internally threaded device. Another example coats the threads of an externally threaded device. Processes for coating internal and external threads are disclosed.||12-06-2012|
|20120282022||SMILLED SPLINE APPARATUS AND SMILLING PROCESS FOR MANUFACTURING THE SMILLED SPLINE APPARATUS - By combining shaping and milling actions, or smilling, the cutting tool can move through the entire usable portion of the spline and machine a tool relief into the face of the adjacent feature such as a shoulder before retracting, reversing direction, and repeating the cycle. The smilling apparatus and manufacturing method eliminates the need for an annular spline relief and the full length of spline engagement can be utilized for strength. The effective width of the spline connection apparatus manufactured by the smilling process conserves space and increases the load carrying capability of the spline connection.||11-08-2012|
|20120238389||INTEGRAL ELECTRIC MOTOR WITH SPEED SENSOR, PLANETARY GEARBOX AND STEERING MEANS - A steerable wheel motor assembly for moving construction lifts and scaffold equipment is disclosed and claimed which includes a spindle bracket configured to be pivotably mounted at an upper end to a steering mechanism for rotation about a vertical axis. The output shaft is supported by a first set of bearings and a second set of bearings with the second set of bearings including a speed and direction sensor integral therewith for detecting the speed and direction of rotation of the output shaft. The sensor outputs to a control system which controls the speed and direction of the equipment. A thrust washer is used to position the output sun gear accurately reducing manufacturing and maintenance costs of the assembly. Use of the thrust washer reduces the cost of machining the output shaft to a high tolerance.||09-20-2012|
|20120058853||LUBRICATION SYSTEM FOR RIGHT-ANGLE DRIVES USED WITH UTILITY VEHICLES - A bearing lubrication device in a right angle gear reducer includes a gear housing having an interior portion and a lubricating fluid reservoir therein. An oil slinger, rotating pinion shaft, pinion shaft housing, and bearings for supporting the pinion shaft within the pinion shaft housing work together to provide a continuous supply of oil to the bearings. The pinion shaft includes two radially and longitudinally extending passageways therethrough which supply oil from a recess in one end of the pinion shaft to the bearings. Oil is slung from the reservoir into the recess of the rotating pinion shaft where it is forced outwardly and through the passageways to a chamber formed by the rotating pinion shaft, shaft housing and bearings. The roller bearings pump the oil from the chamber back to the fluid reservoir. Oil passageways in the shaft housing enable the return of oil from one bearing set.||03-08-2012|
|20110232978||OFFSET DRIVE SYSTEM FOR UTILITY VEHICLES - A wheel driven utility vehicle includes a frame and two small volume high speed alternating current electric motors arranged side by side for driving the vehicle. Alternatively high speed direct current, hydraulic or pneumatic direct current motors may be used with suitable controls. Each motor has an output shaft which drives an offset planetary gear reducer. Each offset planetary gear reducer is affixed to the electric motor and includes an output carrier interconnected with an output shaft. Each output shaft includes first and second chain drive sprockets which drive chains interconnected with shafts driving the front and rear wheels respectively. Each offset planetary gear reducer enables use of space saving high speed relatively low-torque alternating current electric motors with attendant large speed reductions. Gear reduction enables the production of sufficient torque at the wheels of the vehicle. Applications in addition to utility vehicles are also specifically contemplated.||09-29-2011|
Patent applications by FAIRFIELD MANUFACTURING COMPANY, INC.