Abstract: A power transmission device for a full-time four wheel drive vehicle has a differential motion limiting device composed of a hydraulic frictional clutch such as a wet multiple disc type clutch. The friction clutch is disposed between a diff-carrier constituting a front wheel differential gear and a ring gear mount casing covering the diff-carrier and arranged coaxially with the diff-carrier. The ring gear mount casing is associated with the diff-carrier in a center differential gear, and the diff-carrier of the front wheel differential gear is associated with the left hand side gear in the center differential gear. Thus, when the friction clutch is engaged, the ring gear mount casing and the diff-carrier of the front wheel differential gear are integrally coupled with each other so that the rotation of the ring gear is transmitted directly to the front wheel differential gear, while the two elements in the center differential gear are integrally coupled with each other to lock the center differential gear.

Abstract: In the control of a vehicle automatic transmission having a series connection of an overdrive gear mechanism and an underdrive gear mechanism, the overdrive gear being switched over between direct connection and overdrive both when the underdrive gear mechanism is switched to direct connection and to speed reduction, a maximum limit is set for the period over which the overdrive gear mechanism is switched to overdrive while the underdrive gear mechanism is switched to speed reduction, such a maximum period being determined according to a vehicle operational parameter such as vehicle speed, throttle opening or transmission fluid temperature.

Abstract: A change gear transmission (12) is provided having an input component (16, 24, 26, 26A, 50, 53, 54 and 56), a connecting component (28, 60, 62, 64 and 80) and an output component (74) and includes a coupling (76) for drivingly connecting and disconnecting the connecting component from the output component. Preferably, the coupling is a positive clutch of the type having relatively low backlash between the interengaging clutch teeth (334, 336, 338, 340) to resist asynchronous engagement thereof.

Abstract: A planetary transfer transmission for the drive of two vehicle axles of a motor vehicle, whereby a central input shaft, a coaxial central output shaft, and a concentric output shaft, in a torsionally fixed way, are respectively connected with one gear element of a planetary wheel gear that can be locked by a locking multi-disk clutch. An input wheel of an axle offset gear, that can be driven by the concentric output shaft, the planetary wheel transmission, and the locking multi-disk clutch are arranged in line to one another.The input wheel is disposed on the side of the locking multi-disk clutch that is opposed to the planetary wheel gear and, in a torsionally fixed way, is held on an outer hollow shaft that is rotatably disposed on the concentric output shaft and can be brought into driving connection with the concentric output shaft by an axle-connecting multi-disk clutch that is arranged on the side of the input wheel that is opposed to the locking multi-disk clutch.

Abstract: A planetary gear device using non-circular gears comprising a casing, an input shaft rotatably supported in the casing and driven for rotation by a drive source, a carrier fixed on the input shaft, an output shaft rotatably supported in the casing, a rotary body concentric with the input shaft and rotatably supported in the casing, and a planetary gear unit rotatably supported on the planetary shaft. The planetary gear unit integrally comprises a main driving gear and a driven gear. The planetary shaft is connected at one end thereof to the carrier and at the other end to the rotary body. Fixed on the output shaft is an output gear meshing with the driven gear. Fixed to the casing is a fixed gear meshing with the main driving gear. At least either the combination of the main driving gear and fixed gear or the combination of the driven gear and output gear forms a pair of non-circular gears.

Abstract: A portable walking beam pump jack for use in pumping liquids from an oil well having an elongated frame and an axle with wheels thereon mounted transversely on the frame for providing rolling transportation. Stabilizer pads are provided for securing the frame with respect to a ground location, after transportation. An engine is mounted on the frame and rotates a counterweighted pair of arms which are journalled for rotation adjacent to the frame and parallel to the longitudinal axis of the frame. A drive yoke is connected between the counterweighted arms and a walking beam such that rotation of the arms drives the walking beam in a rocking motion. A foldable support assembly is mounted upon the frame and supports the walking beam. The walking beam can be connected to a sucker rod for pumping from a well.

Abstract: A gearbox comprises parallel primary or input and secondary or output shafts in a casing. An output gear train of two constant-mesh gearwheels is fastened to the secondary shaft. An independent input gear train of four constant-mesh gearwheels and a first and a second clutch are mounted on the primary shaft. A third clutch is mounted on the secondary shaft. The first and third clutches respectively couple the input train to the primary shaft and to the secondary shaft. A three-element planetary gearset concentric with the primary shaft comprises a sun gear fastened to the input train, a planet carrier coupled to the primary shaft by the second clutch and a ring gear fastened to the output train. Thus the gearbox features three gear ratios by respective combinations of pairs of the three clutches. This arrangement constitutes a basic gearbox.

Abstract: An improved robotic manipulator of the type having a plurality of serially-connected drive shafts and a mounting surface affixed to one end thereof. The manipulator includes a first shaft rotatable about a first axis coincident with one ordinate of a mutually perpendicualr triordinate system and a first housing rotatable about that first axis, a second shaft rotatably mounted to said first shaft for rotation about a second axis obliquely oriented with respect to said first axis, and a second housing rotatable on the first housing about a second axis. Rotational movement is imparted to the second shaft about the second axis in accordance with rotational movement of a shaft rotatable about the first axis. A mounting surface has a centerline angularly oriented with respect to the second shaft, and a third shaft upon which the mounting surface is attached is rotatable about a third axis angularly oriented with respect to the second axis.

Abstract: Stepwise change-speed transmission between the engine and the drive shafts of the driven wheels of a motor vehicle including expansible driving and driven pulleys supported respectively by a main shaft and a driven shaft, and a friction clutch mounted on the driven shaft to transmit drive from the driven pulley to a differential through a geared reversing unit for engaging forward drive and reverse drive. The reversing unit is designed in such a manner as to maintain the forward drive in permanent engagement and can be actuated by a hydraulic actuator to engage the reverse drive.

Abstract: A failsafe system in an automatic transmission includes: a device for detecting rotary speed of an output shaft of the automatic transmission; a device for detecting either rotary speed of a rotary member other than the output shaft of the automatic transmission or engine rotary speed. When a correlation between the output shaft rotary speed and either the rotary speed of the rotary member or the engine rotary speed is abnormal, control oil pressure in a hydraulic control device of the automatic transmission is increased, whereby slippage in frictionally engaging devices in the hydraulic control device of the automatic transmission during non-shift are effectively eliminated.

Abstract: A control system for an infinitely variable transmission has a transmission ratio control valve having a spool for controlling oil supplied to a cylinder of a drive pulley to change the transmission ratio. The deceleration rate of the motor vehicle contianing the system is detected to produce a deceleration signal. By controlling the oil pressure supplied to the transmission ratio control valve in accordance with engine operating conditions and the deceleration signal, the spool is shifted such that downshifting speed is increased with increasing deceleration.

Abstract: A differential device using a fluid includes a differential case and a pair of sleeves which are rotatably supported by the differential case. Each of the outer end portions of the sleeves is connectable to one of a pair of rotary output shafts, while the inner end portions of the same are protruded into the case to face each other with a small clearance left therebetween. A chamber to be filled with a viscous liquid is defined between the case and the sleeves. A plurality of drive plates which are rotatable integrally with the case and a plurality of driven plates which are rotatable integrally with the sleeves are disposed in the chamber alternately with each other and in an overlapping manner. Guide rings are interposed between the nearby driven plates to position them at equally spaced locations.

Abstract: A differential case with a limited-slip mechanism includes a pair of axles held in coaxial relation to each other, a pair of side gears mounted respectively on inner ends of the axles, pinions interposed between and held in mesh with the side gears, a case housing the side gears and the pinions therein and supported on the axles, and a clutch mechanism interposed between the case and each of the side gears and including a plurality of discs arranged for mutual frictional engagement. The case comprises a central cylindrical body having opposite open ends and caps attached to the opposite open ends. The central cylindrical body has grooves extending axially thereof and defined in an inner peripheral surface thereof at at least one of the opposite ends, the discs having portions engaging in the grooves for preventing rotation of the discs. The caps and the one-piece central cylindrical body may be made of different materials.

Abstract: A hydraulic pressure control device in an automatic transmission, provided thereon with a mechanism capable of regulating oil pressure in response to a command value from a calculating device, including: a device for detecting oil pressure in the hydraulic pressure control device; a device for comparing the oil pressure thus detected with a target value; and a device for correcting the command value from the calculating device in accordance with the result of the comparison, wherein the oil pressure actually generated in the hydraulic pressure control device is directly detected, and the command value to control the oil pressure is corrected while the oil pressure thus detected is compared with an ideal value (a target value). With this arrangement, highly accurate oil pressure control can be continuously carried out, irrespective of variations peculiar to a mechanical system and variations in use conditions.

Abstract: This hydraulic pressure transmission control device is for a vehicle with a transmission system which has, in series in the specified order in the rotational force transmission path, a first transmission mechanism which can be set to any one of several speed stages according to selective supply of hydraulic fluid pressures, and a second transmission mechanism which similarly can be set to any one of several speed stages according to selective supply of hydraulic fluid pressures.

Abstract: Flywheel drive to operate a rear axle in a wheeled vehicle is provided and consists of a shaft having a rollbar bearing on each end mounted within the wheeled vehicle parallel and near the rear axle, a flywheel affixed to the shaft, a clutch coupled to the shaft, a variable pulley attached to one side of the clutch, means for rotating the shaft and flywheel to a maximum RPM with the clutch disengaged, means for transferring forward motion from the shaft to the rear axle and means for transferring reverse motion from the shaft to the rear axle.

Abstract: The differential gear momentum compensated actuator is a mechanism that maintains the rotational rate of a planetary carrier relative to a sun gear a constant negative multiple of the rotational rate of the pointed device relative to the sun gear enabling momentum compensation, but when the angular rate of the pointed device relative to its support bearing races is zero, large non linear friction torques act on the pointed device and prevent precision device pointing. The improved rate biased differential gear momentum compensated actuator is a mechanism for rotationally articulating the sun gear relative to the base vehicle at a biased angular rate while the pointed device independently tracks the target angular rate. The bias angular rate of the rotational reference sun gear results in each pointed device support ball bearing race having a different rotational rate thus preventing stiction friction torques from acting on the pointed device.

Abstract: A transmission diagnostic control effective when there is an apparent loss of the transmission output speed signal for determining if failure is real, and if so, the cause of the failure. When an apparent loss of the output signal is observed, the transmission is successively upshifted through its various forward speed ratios while the transmission input speed is monitored to detect the occurrence of an upshift-related reduction thereof. If the shifting fails to produce a reduction in the transmission input speed by the time the transmission has been shifted to the highest available speed ratio, a total transmission failure is indicated. If the shifting produces a decrease in the transmission input speed, a total failure of the transmission is ruled out, and the diagnostic control determines if the failure is transmission or sensor related.

Abstract: A hydrokinetic energy converter transforms the rotary output of a prime mover into hydrokinetic energy, which is blocked in an energy circuit including fluid coupled flywheels. The converter comprises a lighter flywheel mounted to rotate within and in fluid coupled relationship with a heavier flywheel. The shaft of the heavier flywheel is suitably connected to the prime mover. The shaft of the heavier flywheel is also coupled to the shaft of the lighter flywheel by a velocity multiplier.

Abstract: A vehicle gear-box with an input shaft which drives two intermediate shafts, which lie in a plane offset from the input shaft and have a pair of mutually engaging gears, one of which is non-rotatably joined to the intermediate gear for the first gear speed, mounted on one of the intermediate shafts, while the other gear is freely rotatably journalled on the second intermediate shaft and lockable thereon by an engaging sleeve with a synchronizer. Reverse gear is obtained by locking the second gear to the second intermediate shaft with the intermediate gear for first being disengaged from its intermediate shaft.