Abstract: A linear ball screw actuator assembly and a method of constructing it. The actuator assembly has a housing for a ball screw and ball nut which together define a raceway between them for a recirculating ball bearing train of balls, one of the screw and nut being reciprocable along a z axis responsive to rotation of the other and being adapted to be coupled to a member to be actuated. The housing has gearing for transmitting rotation to the other of the ball and screw nut in a direction lateral to the z axis. A base for the housing is spaced from the housing and has a base journal journaling the first pin extending along a first pin axis laterally perpendicular to the z axis. The housing has a housing journal journaling a second pin extending crosswisely perpendicular to the first pin. The second pin axis intersects the z axis and x axis. The pins are coupled in a manner to permit relative rotation of the base and housing about either pin axis, or both, to obviate misalignment problems.

Abstract: In order to provide a driving mechanism for a photosensitive drum which is capable of reducing deformation of the shaft of the photosensitive drum caused by loads when transmitting a driving force, a drive transmission course 51 is diverged to at least two courses in a drive transmission system 42 for transmitting the drive force from a drive motor 41 to the photosensitive drum 25. Specifically, the last stage of the drive transmission course 51 is engaged with a passive member 47 provided to the drum shaft 25a at two or more points to connect and link the drive force, thereby diverging the directions of loads to several directions, by which irregular movements of the photosensitive drum or vibration caused by the deformation of the shaft is eliminated.

Abstract: A driving apparatus which is capable of adjusting the forward and backward position and the height of a seat section by using a single motor to reduce the weight of the apparatus and simplify the structure. Nut members are mounted on operating threaded shafts which are rotated in normal or reverse by an electric motor so that the operating threaded shafts go through the nut members. A nut body constituting each nut member is structured so as to be engaged with one of first and second clutch members by a clutch operating member. In the first shift condition where the nut body is engaged with the first clutch body, power is turned on and the nut member moves back and forth relative to the operating threaded shaft. In the second shift condition where the nut is engaged with the second clutch body, power is turned off to hinder the movement of the nut member.

Abstract: A parallel-axis torque-proportioning differential includes four sets of planetary gear pairs mounted within a differential housing having exterior dimensions substantially identical to those presently being used for comparable prior art designs. The four planetary pairs are arranged in two planetary sets positioned symmetrically-but-non-equiangularly with the axes of the planet gears in a mirror-image relationship about the common axis of the sun/side gears and with each planetary set comprising two of the separate and distinct planet gear pairs. The two planetary sets are separated from each other by large angular spacings; and two large windows, which are positioned in circumferential alignment with each of said large angular spacings, facilitate lubrication and also provide appropriate access to accommodate C-clip assembly.

Abstract: A jacket having a pair of small helical gears is spline-fitted around a splined shaft. Since the small helical gears have an adverse helix angle to each other, the jacket moves along the spline shaft in the axial direction so as to distribute an equal torque to both small helical gears. The splited torque is transmitted to a pair of drive shafts each of which drives the main rotor of a helicopter through a combination of gear and pinion. The drive shafts are fixed axially and therefore helical gears or double-helical gears can be used in the combination of gear and pinion.

Abstract: A multi-driving assembly of a vehicle power seat for adjusting forward and backward movement and height of the front and rear portions of the seat. At a left side of the motor shaft of an electric motor (central portion of a vehicle) where no wide space is secured, a first tightening member having no clutch is screwed to a first rotating screw shaft, which is provided with a first clutch to adjust forward and backward movement of the seat. At a right side (door side), second tightening members each having a second clutch provided therein are screwed to a second rotating screw shaft to adjust the height of the front and rear portions of the seat.

Abstract: A system for adjusting a vehicle seat comprises a plurality of adjustment mechanisms that are selectively driven by a common adjustment electric motor via gear units that are distributed within the seat, each gear unit being in the vicinity of a corresponding adjustment mechanism, and being capable of being connected to the adjustment motor by at least one transmission member that rotates at the same speed as the adjustment motor, the system further including clutches and means for controlling the clutches. Each gear unit is permanently coupled to the adjustment motor via one of the transmission members, and is coupled to an adjustment mechanism via a clutch installed between the gear unit and the corresponding adjustment mechanism.

Abstract: A driving apparatus which is capable of adjusting the forward and backward position and the height of a seat section by using a single motor to reduce the weight of the apparatus and simplify the structure. Nut members are mounted on operating threaded shafts which are rotated in normal or reverse by an electric motor so that the operating threaded shafts go through the nut members. A nut body constituting each nut member is structured so as to be engaged with one of first and second clutch members by a clutch operating member. In the first shift condition where the nut body is engaged with the first clutch body, power is turned on and the nut member moves back and forth relative to the operating threaded shaft. In the second shift condition where the nut is engaged with the second clutch body, power is turned off to hinder the movement of the nut member.

Abstract: This device comprises a motor (1), the output shaft (2) of which carries two coaxial worms (5, 6), offset axially and with opposite pitches, two pairs of wheels, (7, 9, 8, 11) meshing with the worms, mutually in pairs, at the rate of two wheels (7, 8; 9, 11) per worm, which wheels are arranged on either side of the worms, an output shaft (12, 13, 14, 15) traversing each wheel (7, 8; 9, 11) freely and intended to control an associated element at one or other of its opposite ends, and on each shaft (12 . . . 15) and facing each wheel (7 . . . 11), a clutch (E1, E2, E3, E4) independent of the other clutches and adapted in order to be able to link the selected shaft in rotation to the corresponding wheel. This arrangement makes it possible to produce a compact control assembly distributing, from a single location, multiple functions from a lightweight divider box ensuring the switching of the functions, with a reduced overall size and a simplified single connection.

Abstract: To provide for conjoint movement of reel tables (1,2) on which the centers of winding reels of cassettes having different reel spacing, for example from a set of cassettes, can be positioned, the reel tables are located on respective carriages (5,25) operable in a common plane along guide reels or rods (3,4; 23,24), and commonly driven from a single motor (13). The motor 13 is in engagement, via bevel gears coupled to the shaft, with two spindles (7,27), engaged by spindle nuts which are coupled to the respective carriages, so that, upon rotation of the motor, both of the reel tables will move in a common plane and will shift proportionately along the guide tracks or rods, thereby moving conjointly, and proportionately with respect to said axis of symmetry.

Abstract: The motor-speed reducer comprises an elongated tubular case (1) in which is disposed a motor (2) provided with two coaxial output shafts extending in opposite directions (4 and 6). Mounted on the end of each output shaft is an end portion (24) of a housing (22) of a speed reducer (18, 20). The end portion of the shaft has a worm (8, 10) which is engaged with an input worm wheel (32) of the speed reducer. The two speed reducers are preferably similar. A cassette (42) including an end-of-travel device and rotation detectors is mounted in the case (1) around the output shaft (6).

Abstract: An actuator for variable adjustment of the pistons in hydraulic slave cylinders for regulation of for example the elevation adjustment of work stations. The pistons are actuated by way of a pusher which is non-rotatable but axially displaceable in the actuator housing (10). In the housing (10) there are provided one or more oblong openings (22) for drivers (27) attachable to the pusher and arranged for cooperation with the corresponding pusher in one or several further actuators placeable close to the actuator and that in at least one of the connected actuators there is arranged a threaded spindle for cooperation with a pusher designed as a nut.

Abstract: There are many requirements for an actuator where safety considerations dictate several independent means of actuation. This invention pertains to an actuator utilizing a single ballscrew with drive units associated therewith to provide a level of redundancy which permits full performance with any one credible failure and emergency performance with any two credible failures and, thus, the actuator is dual failure tolerant with full performance after any two credible failures.The ballscrew actuator has a pair of rotatable ballnuts associated with a ballscrew and carried by separate housings movable toward and away from each other. The ballscrew is twice the length of the desired actuating movement, with one-half of the length of the ballscrew being stored in each housing. Primary and backup drive units each having a drive motor are carried by one housing and each have a worm gear set and a selectively engageable clutch for selective driving of the first ballnut.

Abstract: A positioning actuator for use between a working-roll journal block and a roll-stand frame has a housing, a worm shaft rotatable in the housing about a main axis and formed with two axially offset worms, and respective worm wheels meshing with the worms and rotatable in the housing about respective parallel axes lying in a plane parallel to but offset from the main axis. The worm wheels are each formed internally centered on the respective axis with a screwthread. Respective pusher rods extending along the worm-wheel axes through the worm wheels are each formed with an external screwthread complementary to and meshing with the respective internal screwthread. The rods and housing are coupled together so as to inhibit rotation of the rods about the respective worm-wheel axes while permitting movement of the rods along the respective worm-wheel axes.

Abstract: This compact gear box is intended for a corn harvesting unit having a pair of harvesting rolls and a pair of gathering chain assemblies. The gear box includes a drive shaft and first and second pairs of shafts connected to the harvesting rolls and the gathering chain assemblies respectively. The drive shaft includes a bevel gear driving a bevel pinion gear mounted to the end of each of the first pair of shafts to rotate the harvesting rolls. The first shafts each include worm gears and the second shafts each include worm wheels engageable by associated worm gears of the first pair of shafts to rotate the gathering chain assemblies.

Abstract: One or more remotely disposed valves may be opened or closed by a control handwheel by means of rotatable flexible shafting and mechanism associated therewith which may reduce the torque required to rotate the hand wheel and permitting much lighter weight and less costly flexible shafting to be employed. The associated mechanism comprises pulley-belt arrangements and/or gearing structures at each valve to be opened or closed as well as an optional pulley-belt arrangement cooperating with the handwheel. A torque limiting clutch device may readily be incorporated into the system for providing necessary slippage to the valve stems in the event one or more of the remotely disposed valves reaches the end of its travel prior to the remaining valves in the system.

Abstract: A mechanical device for effecting a phase change between the expansion and compression volumes of a double-acting Stirling engine uses helical elements which produce opposite rotation of a pair of crankpins when a control rod is moved, so the phase between two pairs of pistons is changed by +.psi. and the phase between the other two pairs of pistons is changed by -.psi.. The phase can change beyond .psi.=90.degree. at which regenerative braking and then reversal of engine rotation occurs.

Abstract: A gear drive has two closely spaced parallel output shafts driven by a single input shaft. One gear train connects the input shaft to one of the output shafts which has a thrust bearing at one end to absorb thrust loads. A second gear train connects the input shaft to the second output shaft. The second output shaft mounts a double helical pinion which is in engagement with two double helical gears on a pair of spaced shafts. The spaced shafts are each mounted in thrust bearings to absorb the thrust on the second output shaft which is transmitted through the meshings double helical gearing to the pair of shafts. A linkage engages the ends of the pair of shafts to equalize the thrust load on each of the two shafts.

Abstract: A driving gear assembly for a double helix extruder. The assembly includes a multiple power path from a transmission gear to produce synchronism in the extruder helix shafts. The structure of the gearing enables a simple adjustment of the proper mesh of the extruder helices when mounting the gearing by mere disengagement and re-engagement of a (normally not disengageable) tooth coupling.

Abstract: A drive system for a workpiece table of a machine tool, especially a gear cutting machine, which includes two worm wheel drives of different transmission ratio, each worm wheel drive including a worm and a worm wheel. The worms of the worm wheel drives being adapted alternately to be drivingly connected to a drive shaft. The worms of the worm wheel drives are drivingly connected to each other while the transmission ratio of this transmission connection of the two worms equals the reciprocal transmission ratio of the worm wheel drives with regard to each other. The worm wheels of both worm wheel drives which are rotated in the same direction and at equal speed which latter depends on the respective coupled worm wheel drive, are coupled to each other as well as to the workpiece table.

Abstract: A transmission for a two-worm press having counter running worms in a worm housing, which includes: a transmission housing, an additional housing connected to the transmission housing and detachably connectable to the worm housing, a first and second transmission output shaft respectively having different length and being supported by axial bearings and drivingly connectable to the worms by means of splined coupling sleeves. The first one of the two transmission output shafts has its free end designed for positive torque transmision and extends into a correspondingly designed hub-shaped end of an additional output shaft forming part of a step-down transmission and being arranged in the transmission housing. The two transmission output shafts are supported by radial bearings spaced from each other and from the additional output shaft. Each of the two transmission output shafts has a gear keyed thereto between the radial bearings while the two gears are in mesh with each other.

Abstract: The present invention applies to large and powerful geared mixer drives and aerators and broadly to geared reduction drives with a plurality of reducing steps, where the axis of an electric motor is offset from the axis of the power consumer and disposed at right angles to said axis. The drive of a single motor is split up into two channels that apply power to a common final drive gear in two diametrically opposite places. Means are provided to equalize the loads in both places, at all loads. Thus a turning moment is exerted rather than a one-sided driving load. It balances the turning moment of the power consumer directly and with least deflections. It also drastically reduces the size and weight of the drive.

Abstract: A transmission for a multiscrew extruder comprises a central spur gear meshing with several peripheral spur gears disposed symmetrically therearound, each gear having herringbone teeth with an annular gorge separating its sections of opposite pitch. The central gear is axially immovably journaled at its ends in two roller bearings, which may also be combined with thrust bearings, mounted in opposite walls of a housing. The peripheral gears are each journaled with axial play in terminal roller bearings and in an intermediate roller bearing, the latter having individual inner and outer races large enough to slip over the toothed sections of these gears. The intermediate bearings are supported by split bushings in the gorges of the peripheral gears and are embraced, over a major fraction of their circumferences, by an annular housing partition surrounding the central gear; the free minor circumferential portions of these bearings extend into the gorge of the central gear.