Abstract: A sliding gear for a speed-changing transmission, idling on an output shaft, has a set of external running teeth in permanent mesh with a driving gear and a set of internal clutch teeth engageable with mating teeth on a coupling member carried by that shaft. The two sets of teeth have centerlines inclined to the axial direction by angles so related as to exert balanced axial forces upon the sliding gear in the engaged position of the latter. The clutch teeth have flanks diverging from their centerlines at small angles, in the direction of the engagement shift, to hold the sliding gear in contact with the coupling member.

Abstract: An axially segmented brake arrangement in a hub-shaped planetary gear wheel head for a driven axle has a sleeve which couples the two central shaft sections nonrotatably together so that the sun wheel section can be replaced or be interchangeable to enable sun wheels of different diameters to be used even once the brake has been assembled. The sleeve which serves this function is connected by a web to a rim or spur gear located radially outwardly of the sleeve at the level of the planet gear shaft, this spur gear carrying the internally toothed brake disks of a stack of such disks interleaved with externally toothed disks engaging an internally toothed hollow shaft meshing with the planet gears, surrounding the brake disk stack and carried by a hollow shaft carrier which receives the power assist mechanism for the brake and is mounted on a hollow axle extending into the hub forming housing which is connected to the planet carrier.

Abstract: A rapid-torque clutch/brake assembly has a hub secured to the driven shaft and connected to an axially displaceable ring by a pair of spring rings which flank interdigitating arms of the axially displaceable ring and the hub. An electromagnetic coil can be energized to selectively shift the axially displaceable ring into engagement with a clutch ring coupling the shaft to a driving element such as a pulley, or into engagement with a brake ring connected to a housing for braking rotation of the shaft.

Abstract: A system for controlling the torque to be transmitted by a fluid-operated friction coupling (clutch or brake) in an automatic speed changer comprises a processor which receives readings of the rotary speeds of an input member and an output member to be interengaged by that coupling and calculates the instantaneous relative angular acceleration .alpha.=-d.vertline..DELTA.n.vertline./dt from these data, the value .alpha. being supplied to a comparator. A computer receiving the same readings determines the optimum acceleration and feeds the result to the comparator whose output actuates a governor controlling the fluid pressure supplied to the coupling.

Abstract: A steered and driven axle-end assembly has a steering knuckle whose inside and outside halves are pivotal about an upright pivot axis. An axle extends into the inside knuckle half and is connected to the inner side of a universal joint whose outer side is connected to one end of a gear train whose other end is connected to a wheel support which is rotatable about a horizontal wheel axis on the outside knuckle half. A pair of roller bearings centered on the wheel axis are spaced axially apart therealong by a spacing which is equal to at most half of the axial distance through which the outside knuckle half extends into the wheel support. Thus the outside knuckle half and associated structure can pivot through a considerable angle relative to the inside knuckle half for minimum turning radius of a vehicle embodying the axle-end assembly.

Abstract: A hydrostatic-mechanical multiple-wheel drive for heavy vehicles with a multi-gear transmission for driving main driving wheels and hydrostatically operated additional driving wheels to be connected, as required, by themselves or when in one of the lower gears, including a variable displacement pump, driven directly proportionally to the speed of the main drive motor, for acting upon the additional driving wheels and an auxiliary pump acting as a filling and control pump, wherein, in order to control the speed with which the additional driving wheels are driven to that of the vehicle wheels, in particular to achieve synchronous running of these wheels, provision is made for orifices and/or throttles in the oil circuit of the auxiliary pump for varying the control pressure for the adjusting cylinder of the variable displacement pump so as to adjust these against the restoring force of the pump and of springs in the adjusting cylinder to the control pressure corresponding to the desired speed.

Abstract: One embodiment of a harmonic-drive device insertable, e.g., into a clutch housing having elevated fluid pressures comprises a cup-shaped member with a flexible cylindrical inserted in a casing and rigidly connected thereto, the cup member bearing at its end a pair of substantially cylindrical supports in which a drive shaft is rotatably journaled. The shaft bears a mechanical wave generator which deforms the middle portion of the cup wall into an elliptical cross-section, whereby splines on opposite sides of the cup wall are shifted to mesh with inwardly projecting teeth of a pair of rings, one ring having teeth greater in number than the splines and being attached to a motion-output component rotatably and slidably secured to the cup casing. The supports in the cup are tapered to a minimum diameter at their inner ends substantially equal to the minor axis of the elliptical cross-section.

Abstract: A driving gear having external teeth in mesh with internal teeth of a sliding sleeve, adapted to be axially shifted into meshing engagement with external teeth of a driven gear coaxially adjoining the driving gear, carries several peripherally spaced rockers which project radially into axially extending inner peripheral guide grooves of the sleeve. A synchro ring coaxial with the two gears is rotationally entrained by the driving gear, through the intermediary of the rockers thereof, and has a clutch surface confronting a similar surface of the driven gear across a narrow clearance which closes when the ring, under an axial thrust from the rockers in response to an incipient coupling shift of the sleeve, is moved toward the driven gear.

Abstract: A gear selector for a motor vehicle has a gear shift lever which is rotatable about its longitudinal axis to activate micro switches that select the desired gear ratio and is rotatable in the plane of its longitudinal axis about a pivot mounted to the steering column to activate micro switches for effecting forward or reverse movement of the vehicle. The gear selector contains a lockout device that prevents movement of the gear selector between the forward and reverse positions when the vehicle is operating in one of the higher gears.

Abstract: A driving gear having external teeth in mesh with internal teeth of a sliding sleeve carries several peripherally spaced spring-loaded detent members which are pivotable in respective axial planes and extend radially into an inner peripheral groove of the sleeve in a decoupling position of the latter, the sleeve being able to engage a driven gear coaxial with the driving gear only upon radially depressing these members against their spring force. A synchro ring coaxial with the two gears is limitedly rotatable relatively to the driving gear and has a clutch surface confronting a similar surface of the driven gear through a narrow clearance which closes when the ring, under an axial thrust from the detent members, is moved toward the driven gear by an incipient coupling shift of the sleeve.

Abstract: A steered and driven axle-end assembly has a steering knuckle whose inside and outside halves are pivotal about an upright pivot axis. An axle extends into the inside knuckle half and is connected to the inner side of a universal joint whose outer side is connected to one end of a gear train whose other end is connected to a wheel support which is rotatable about a horizontal wheel axis on the outside knuckle half. A pair of roller bearings centered on the wheel axis are spaced axially apart therealong by a spacing which is equal to at most half of the axial distance through which the outside knuckle half extends into the wheel support. Thus the outside knuckle half and associated structure can pivot through a considerable angle relative to the inside knuckle half for minimum turning radius of a vehicle embodying the axle-end assembly.

Abstract: A bearing assembly for a transmission output shaft carrying gears within the transmission comprises a roller bearing engaging the shaft between two such gears and suspended from the transmission housing on a plate which juxtaposed with a surface of the housing. Another bearing at the end of the housing generally also engages this shaft.

Abstract: The mechanism comprises a main shaft 4, a drive wheel 5 non-rotatable thereon, a clutch 2 having a disc carrier 6 non-rotatable with respect to the drive wheel 5, and a parking brake 3 lockable with respect to the drive wheel 5 and disc carrier 6. A spring 7 through a transmission piston 9 acting on the carrier 6 closes the clutch 2, and a hydraulic piston 8 with a pressure chamber 55 opens the clutch 2. Wet multi-disc clutches and brakes are preferred. The transmission piston may be connected to the power piston 9. The mechanism is suitable for vehicles drivable by more than one axle.

Abstract: A wheel head for the drive wheel of a heavy duty vehicle provides the hub as a housing which is closed at its outer end by a movable cover and can be opened to allow removal of the planetary gearing and brake. The planetary gearing includes planetary gears journaled directly on the cover and a ring gear in the form of a hollow shaft which encloses the brake and is connected to the axle by a wheel bearing cap which also can be removed through the housing opening when the cover is detached.

Abstract: A hydrostatic-mechanical drive for a load, e.g. a self-propelled machine such as a concrete mixer comprising a hydrostatic motor which can be connected to the load via a mechanical transmission. According to the invention, the shaft of the hydrostatic motor extends into the control plate or cover thereof (through which hydraulic communication is made with the drum carrying the axial pistons of the motor) and is provided with an inductive sensor on this plate to form a pulse generator (with a metal gear on the shaft) whose output represents a parameter of rotation of the motor.

Abstract: A direct drive for a drill bit in a drill string has a fluid-operated motor within a drive section connected by a gear section to a bearing section whose inner tube is coupled to the drill bit to accommodate axial displacement of the drill bit within the outer tube, spring elements are braced against a radial bearing for the inner tube which has at least one axially defined race. The coupling between the inner tube and the gearing also accommodates such axial displacement and a reservoir for oil is located between the drive and gear sections so that oil can be fed to the gearing, the bearings and to an axial bearing in an annular oil-filled space between the drive and gear sections.

Abstract: An electromagnetic single-surface clutch/brake combination, especially for textile machinery, in which a rotor assembly is locked to the shaft end encloses the magnetic body carrying the coils so that the latter can be secured to the housing flange when the unit, as delivered, is mounted on the shaft. The rotor assembly and the magnetic body are bridged by a bearing.

Abstract: An assembly for monitoring torsional loading of a drive shaft comprises a magnetic-field generator juxtaposed to a cylindrical body of magnetostrictive material rigidly surrounding the shaft, the body being in the form of a thin foil attached to the shaft via a layer of magnetically insulating material, or a sleeve attached to the shaft by at least two spaced brackets or an outer layer of the shaft specially treated to have a homogeneous magnetic permeability in an unstressed state. A pick-up or magnetic-field sensor is juxtaposed to the body or sheath for detecting differential changes in the magnetic permeability thereof, the pick-up advantageously being connected to a demodulator which extracts a signal whose polarity is determined by the direction of loading of the shaft.

Abstract: The drive for rotating the drum of a vehicular cement mixer includes a mechanical power train mounted in a first chamber of a drive housing and a hydrostatic motor disposed in a second housing chamber substantially surrounded by yet another chamber defined in part by an outer wall of diecast aluminum formed on an outside surface with a plurality of outwardly extending fins and on an inside surface with a plurality of support plates connected to an inner housing well defining the inner chamber. The outer chamber communicates with the inner chamber by means of an overflow outlet at the top of the inner housing wall, oil escaping from the inner chamber via the outlet flowing down the support members to the inner surface of the outer housing wall.

Abstract: A disk clutch inserted between a torque converter and a synchromesh gear train of an automotive transmission comprises a driving friction-plate carrier coupled with the turbine of the converter and a driven friction-plate carrier coupled with an input shaft of the gear train, the driving carrier forming two fluidically separated concentric cylinder spaces between itself and an operating piston embraced thereby. The inner cylinder is of smaller effective area and is pressurized in normal operation by hydraulic fluid (oil) but can be temporarily depressurized, during gear shifting, by a valve controlled by the shifting mechanism; this space communicates via an internal flow channel of the driving carrier with a radial bore in that carrier occupied by a centrifugally and/or resiliently loaded body of a quick-venting valve normally blocking an exit port leading from the outer cylinder space to the interior of a surrounding housing.