Abstract: A control device for a backhoe that moves four separate reversible hydraulic valves in any combination or all at the same time with only one human hand needed to manipulate said controls. These valves are controlled through an organized series of arms, levers, and push rods. Lever one 1 can pivot forward or backward, move up or down, push forward or pull backward, and move to the left or right. Lever two 2 pivots up or down at lever four 4, therefore lever one 1 moves with lever two 2 as a unit. Lever four 4 spins around lever three 3 with lever two 2 and lever one 1 as a unit. Lever three 3 pivots forward and backward taking lever four 4, lever two 2, and lever one 1 with it as a unit. Lever one 1 pivots forward or backward to actuate valve 20 through a number of pins, rods, and arms. As lever one 1 is moved up or down, it pivots lever two 2 causing valve 22 to be actuated, leaving valve 20 uninterrupted.
Abstract: A change lever mechanism for manipulating a change lever, and more particularly to a change lever mechanism of a vehicle constructed and arranged to provide a good shifting feel to a change lever and to absorb vibrations transmitted from engine to thereby prevent transmission of the vibration from a body of the vehicle.
Abstract: In a flat sliding gear drive formed of flat panel-shaped sliding elements (1), (2), with a first sliding element (1) connected to a motor and a second sliding element (2) connected to a variable load, the first and second sliding elements (1), (2) have interacting wedge surfaces which are curved for providing a uniform torque loading of the driving motor.
Abstract: A column shift device for motor vehicles includes a steering column, and a hand lever secured to the steering column in the vicinity of the upper end and including a knob arranged in the vicinity of the steering wheel and comprising two different and separate portions.
Abstract: A pair of power rollers which is gripped between an input disk and an output disk and transmits torque by friction, is supported rotatably by a pair of trunnions. The upper ends and lower ends of the trunnions are respectively connected by links, and the power roller is prevented from being driven out from between the input disk and output disk by the grip force. When the trunnions and the power rollers are displaced by the servopistons in the trunnion axis direction in mutually opposite directions, the trunnions and power rollers gyrate around the trunnion axis as pivot, and a speed change will occur. Links are provided with slots which lengthen in the trunnion axis direction, and are supported in the transmission case free to displace in the trunnion axis direction via pins inserted in the slots.
Abstract: A linear actuator comprises a ball screw carrying an axially restrained rotatable ball nut driven by an electrically energized motor. An enclosing motor housing has front and rear walls with axially aligned openings for passing the ball screw. The motor has a radially inner hollow stator assembly and a generally concentric radially outer rotor assembly. A can member is integrated with the rotor assembly to rotate therewith and has a radial end wall connected to the nut.
Abstract: A loading cam mechanism of a toroidal type continuously variable transmission is provided with a cam disc that rotates together with an input shaft. A cam surface is formed on the cam disc. The cam disc includes a disc portion having the cam surface formed thereon and a cylindrical portion protruding from the central portion of the cam surface. The cam disc further includes a lathe-turned portion formed by lathe turning, a milled surface formed by means of an end mill, and a ground surface formed by means of a grindstone. Formed on a corner portion between the cylindrical portion and the disc portion are a first corner curved surface worked by means of an arcuate portion on the distal end portion of the end mill and a second corner curved surface worked by means of an arcuate portion on the distal end portion of the grindstone.
Abstract: A device for ensuring correct tooth engagement during coupling of an adjustable, first gearwheel to a second gearwheel of a printing-material processing machine, includes a first adjustment device for adjusting the first gearwheel in a direction towards the second gearwheel during coupling, and further includes a protrusion and a guide for guiding the protrusion during the coupling, the protrusion being disposed eccentrically to one of the two gearwheels and being connected to the one gearwheel, so that, during rotation of the one gearwheel about a central axis thereof, the protrusion is rotatable together with the one gearwheel.
November 8, 2000
Date of Patent:
September 17, 2002
Jens Friedrichs, Peter Heiler, Arno Kern, Frank Kropp, Frank Schaum
Abstract: A ball screw apparatus comprises a screw shaft, a nut, and a plurality of balls. A first helical groove is formed at an outer peripheral surface of the screw shaft. A second helical groove is formed at an inner peripheral surface of the nut. A rolling contact way of balls is defined by the first helical groove and the second helical groove facing each other. A connecting way formed of a tube for connecting a part and another part of the rolling contact way is provided on the nut. An endlessly communicating circuit is defined by the connecting way and the rolling contact way. Each of the balls is endlessly arranged in the circuit. A smoothly continuous machined portion is formed by cutting out an angular portion between the helical groove and the connecting way of the nut.
Abstract: A ball screw 2 or a sliding screw 2a has a driving force-transmitting shaft 4 or 4a and a bearing member 6 or 6a externally fitted to the driving force-transmitting shaft 4 or 4a. The driving force-transmitting shaft 4 or 4a is made of aluminum or aluminum alloy, and the bearing member 6 or 6a is made of any one of synthetic resin, aluminum, and aluminum alloy. The member, which is formed by using the aluminum or the aluminum alloy, is applied with a surface treatment, and preferably, it is further applied with a surface finish treatment.
Abstract: The present invention relates to an operating device with a control lever (1) and an operating console (2), and provided with two pivot axes about which the lever can be alternately pivoted relative to the operating console, for adjustment between a number of operating positions. The operating positions of the control lever about said pivot axes are intended for transmission into a corresponding operating condition of a device to be operated. Said pivot axes are created by four support members (3, 4, 5, 6) for the control lever (1) in the operating console, in pairs defining each one of the pivot axes for the control lever. The support members are biased towards their respective paths (7, 8, 9, 10) defined in the operating device, in which paths the support members, alternately and in pairs, are blocked and operable, respectively, to allow control movement of the lever.
Abstract: The present toroidal-type continuously variable transmission comprises input and output disks coaxially disposed so as to be opposed to each other, and a pair of power roller bearings, each power roller bearing including an inner race, an outer race, and power rollers disposed so as to roll on the toroidal surfaces of the input and output disks. At least one of the input and output disks and power rollers are made of medium-carbon steel containing carbon in an amount ranging from 0.3 wt %-0.5 wt %, to thereby have a very long life.
Abstract: To provide a continuously variable transmission for motor vehicles which transmits power with a speed change from a driving member to a driven member. In the continuously variable transmission, power transmission is effected by moving a carrier which supports a shifting rotating member in frictional contact with the driving member and the driven member. No other special mechanism other than the continuously variable transmission is needed to push to move the motor vehicle with a small force. At least either one of the driving member and the driven member is driven by a power disconnecting means to move away from the other member along the axis of a transmission shaft, thereby releasing at least one of the driving member and the driven member from frictional contact with the first and second friction transfer surfaces.
Abstract: The transmission mechanism comprises a lever (12) which can rotate around an eccentric shaft (11) of a rotating disk-crank (10). The lever (12) is guided in its movement by cam means (15a) and acts upon an arm (19) which is attached for joint rotation to an output shaft (3). Advantageously the disk-crank (10) is driven through a connecting rod (8) from another disk-crank (1) which can rotate around a shaft which is different from that of the first disk-crank (10). It doesn't require adjustment or setting up and it has a low cost. The transport device has on the output shaft the wheels for drawing chains with transporting bars provided with clamps for the sheets.
Abstract: In the toroidal-type continuously variable transmission, the radial clearance of a second radial needle roller bearing 30 for supporting the power roller 8 on the periphery of the pivot shaft portion 26 of the displacement shaft 7 is set larger than the radial clearance of a first radial needle roller bearing 27 for supporting a support shaft portion 25 on a trunnion 6. By increasing the radial clearance of the second radial needle roller bearing 30 in this manner, an increase in the surface pressures in the contact portions between the rolling surfaces of needle rollers 32, 32 and the inner peripheral surface of the power roller 8 and the outer peripheral surface of the pivot shaft portion 26 can be restricted, thereby enhancing the durability of the toroidal-type continuously variable transmission. Also, by reducing the radial clearance of the first radial needle roller bearing 27, the inclination of the displacement shaft 7 is minimized, thereby stabilizing the rotation speed change operation thereof.
Abstract: A compact telescopic leg assembly includes a generally cylindrical drive motor mounted axially within the inner leg and coupled to a drive collar by a pedestal mount. A drive screw is threadably coupled to a first drive collar which is attached to the inner leg to raise and lower as the drive screw is rotated by the motor. The pedestal mount couples the motor through the first drive collar to a second drive collar which is coupled to an intermediate leg telescopically receiving the inner leg. Gears couple the motor-driven drive screw to a rotatable power nut coupled to the second drive collar. A fixed drive screw extends from the base within an outer leg upwardly through the second drive collar and cooperates with the power nut within the second drive collar to simultaneously extend and retract the legs as the motor rotates the motor-driven drive screw.
Abstract: A tri-modal—energy storage mode, fail-safe mode, and operating mode—fail-safe actuator with low overall power consumption and specifically low fail-safe power consumption due to energy storage pawling mechanisms. Stored energy is discharged at a controlled rate in fail-safe mode. The actuator's sequencing through its three modes is enabled by a dual-cam/clutch system which is powered separately from the operational (shaft control) system.
Abstract: A backpack-type working machine comprises an engine on a shouldering frame and a swingable arm on a side thereof. A throttle lever on the arm controls the engine. A base of the arm is connected to a holder by means of an elastic pivot means including a bolt around which the arm swings and a spring. To allow the arm to move on a plane orthogonal to a swing direction (plane including a center line of a pivot means), the holder and the base of the arm are connected such that only parts opposing and oppositely of inclined surfaces thereof are in partial contact with each other.
Abstract: A plurality of clamp devices for clamping a cable or a pipe connected to an end effector of a robot are mounted to a robot wrist portion. A first clamp device has a base and a clamp portion configured to slide linearly with respect to the base and be also capable of turning about an axis perpendicular to the slide direction. A second clamp device has a base and a clamp portion configured to be capable of turning about an axis perpendicular to the installation surface of the base. A third clamp device has a revolving unit fitted to the circumference of the arm and configured to be capable of pivotal motion in the circumferential direction of the arm and a clamp portion provided on the circumference of the revolving unit to be capable of turning about an axis in the radial direction of the revolving unit. The clamp portions of these clamp devices are adapted to clamp the cable or the pipe extending to the end effector.
Abstract: A rack and pinion steering gear (10). The rack and pinion steering gear (10) comprises a housing (12) having a chamber (18). A portion of the chamber (18) is a relief pocket (22). A pinion gear (26) is rotatably mounted in the chamber (18) of the housing (12). A rack bar (38) is movable relative to the pinion gear (26). The rack bar (38) is at least partially disposed in the chamber (18) of the housing (12) and has teeth (44) in meshing engagement with the pinion gear (26). A spring (60) is disposed in the chamber (18) of the housing (12) for supporting and guiding movement of the rack bar (38) relative to the pinion gear (26). The spring (60) extends across an opening to the relief pocket (22). The spring (60) extends into the relief pocket (22) as a load applied to the spring (60) from the rack bar (38) increases.