Abstract: A shift switch control device for selection lever units of automatic transmissions is disclosed. The shift switch control device has a selection lever for selecting a desired range within a transmission pattern during the automatic transmission mode and performing an up- or down-shifting operation during the manual transmission mode. A rotary plate is provided at the selection lever, and has up- and down-shift switches at its top end, with a projection provided at the central portion of the rotary plate. A manipulation lever is installed at the top of the selection lever at a position between the up- and down-shift switches, and turns on or off the up- or down-shift switch. A projection guide plate, having an inclined surface at one end thereof, is provided on the selection lever. The control device also has a rotary plate return means for giving an elastic returning force to the rotary plate.
Abstract: A bowl mill transmission which has a high overall transmission ratio with a large output torque, is of compact construction and is simple to assemble. The transmission being a vertically arranged bevel-gear stage for power input and a multi-stage transmission arrangement for power output into a thrust plate of the bowl mill crusher.
Abstract: The friction gear has an input shaft (3) an a torque shaft (20) arranged in a position coaxial thereto, two input disks (5, 12) and output disks (6, 11) disposed in pairs and between which friction wheels are placed and fastened to carriers (26). In the upper section (39) of the housing of the gear recesses (35) are provided in which the upper ends (36) of the carriers (26) engage with play.
Abstract: The present invention intends to provide a controlling device for transmission in which locking action of the locking mechanism is not hindered by a part of the controlling device such as an actuator, when a fork shaft as an operating mechanism is held at a neutral position. For such purpose, the controlling device for transmission includes plural fork shafts, a selecting member selectively engaging with one of the fork shafts, a selecting actuator for moving the selecting member to engage with the fork shaft, a shifting actuator for applying load to the fork shaft engaged by the selecting member, and locking mechanism for locking the fork shafts. In such controlling device, the selecting actuator is constructed to move the selecting member to a non-engaging position not engaging with any of the fork shafts.
Abstract: A ball screw with inner ball circulation whose transfer displacement to size ratio is large, resulting in a device which has an optimized size with a positioning accuracy measured in microns, and a linear actuator equipped with the ball screw, are disclosed. The ball screw includes a plurality of balls arranged in a space between a hemispherical groove formed on a cylindrical inner surface of a housing and a hemispherical groove of a rotating male screw. The ball screw also includes a ball circulation tube with its cylindrical outer surface formed with the hemispherical groove of the male screw and with the groove corresponding to the hemispherical groove of the housing. The ball circulation tube is formed with ball openings penetrating from both ends of the male screw toward the inner part. The ball screw also includes a ball circulation section, which fits inside the ball circulation tube, and has a hemispherical inner return path formed on its outer cylindrical surface.
April 27, 2000
Date of Patent:
May 28, 2002
Korea Advanced Institute Science and Technology
Se Kyong Song, Wan Soo Kim, Dong Soo Kwon, Hyung Suck Cho
Abstract: A drive linkage that is used for controlling valves for the drive motors of an implement or machine, such as an excavator, has a pair of links that can be loaded in tension and compression by manually moving operating levers. The links in turn actuate a cam that tilts a swiveling disk to operate a pilot valve assembly normally used for a joystick control. The links are connected so that the pilot valve can selectively operate motors for driving opposite tracks on sides of the implement in either forward and reverse direction, and wherein motors for both sides can be operated in a forward direction and in a rearward direction. Additionally, each of the drive motors can be controlled so the motor for one side drives in forward direction and simultaneously the motor for the other side drives in reverse direction. A control disk for moving the plungers is operated through a cam plate that is in turn moved by moving the links.
Abstract: A wrist mechanism of an industrial robot is described which have a first ring-shaped hollow reduction unit secured to an arm of the robot, and a first hollow drive tube and a second ring-shaped hollow reduction unit secured to an output shaft of the first reduction unit, respectively. The wrist mechanism further have a second hollow drive tube and a third ring-shaped hollow reduction unit secured to an output shaft of the second reduction unit, respectively, and a third hollow drive tube secured to an output shaft of the third hollow reduction unit rotatably around a first axis. The first, second and third hollow drive tubes are connected to first, second and third wrist elements, respectively, to rotate each of the wrist elements relative to each other, which leave a hollow space inside thereof free for passage of supply cables and pipes which are to be connected to a tool being secured to the robot wrist.
Abstract: A motor vehicle gear box which includes at least two parallel longitudinal shafts and at least two gear assemblies including an idler of the first shaft geared to a stationary pinion of the second shaft. Coaxial rings are provided for jaw clutching the idlers on their shafts. The gear shift yokes of the rings are controlled, and the yokes are mounted sliding longitudinally and are provided with transverse legs having ends which bear contact keys, transversely aligned along an arc, which can be received in an actuator fork, and which is capable of being controlled in transverse movement along the arc and parallel to the shafts for selecting respectively one yoke, and engaging the associated ratio by displacing the yoke longitudinally. The yokes are mounted sliding on a common longitudinal axle.
Abstract: A shifting device of a motor vehicle transmission with a selector lever (3) and a kinematic elements (4-9) for transmitting the selection movements to the automatic transmission, wherein the selector lever can be moved in an automatic shift gate for selecting automatic gears and in a sequence shift gate for manually upshifting and downshifting gears. The shifting device (1) has three movement spaces (I, II, III), which are located next to one another and are preferably directed essentially in parallel to one another, and two adjacent movement spaces (I, II and/or II, III) each are provided for different functions.
Abstract: A walking beam pumping system is disclosed wherein the pumping system's prime mover is gravity. In one embodiment, the system comprises a walking beam pivotally coupled to a support structure at a pivot point substantially central along the length of the walking beam. A counterbalance weight is disposed along the length of the walking beam. A position device is provided for moving the counterbalance weight along at least a portion of the length of the walking beam. As the counterbalance weight moves along the length of the walking beam, the beam's center of gravity is modulated. By modulating the position of the counterbalance weight in an appropriate manner, the walking beam is caused to pivot back and forth with respect to the support structure. A pumping assembly, for example a sucker rod string, is attached to one end of the walking beam, such that as the walking beam pivots back and forth, the pumping system is actuated to pump fluid out of, for example, an oil well bore.
Abstract: An assembly for shifting gear positions (10 and 110) in an electronically controlled transmission including a single lever control for moving between various gear positions. The assembly includes a shift lever (118) mounted to either a column support (14) or a base (112). The shift lever (118) either moves a detent finger (38) between a plurality of gear positions or moves a plurality of detent valleys (26) of a detent housing (20) into contact with a detent finger mechanism (22). The distal end (36) of the detent finger (38) includes a magnet (32) for generating a magnetic field. The detent valleys (26 and 126) represent each gear position and a Hall effect sensor (30) is disposed in the predetermined depth of each detent valley (26 and 126). The sensor (30) is activated by the magnetic field generated by the magnet (32) attached to the distal end (36) of the detent finger (38). In response, the sensor (30) generates an output voltage to a control module.
Abstract: A telescopic system for a robot includes a frame for mounting a motor, a stationary module mounted on the frame and a rotational shaft rotating by the motor. The rotational shaft is mounted in the stationary module, and a movable plate is associated with the rotational shaft to ascend and descend according to a rotational motion of the rotational shaft. A movable module is mounted on the movable plate to expand away from and retract into the stationary module as the movable plate ascends and descends.
Abstract: A transmission shifter is disclosed for controlling a transmission of a motor vehicle by a cable in some instances and an electronic control in other instances. The transmission shifter has a base, a cable attachment bracket mounted on the base and pivotable about a first axis, and a shift lever pivotably mounted on the base. In a first segment of the first shift path the shift lever is movable in a cable-actuation mode and the shift lever urges the cable attachment bracket to pivot about the first axis, and in a second segment of the first shift path the shift lever is movable in an electronic-actuation mode and the shift lever does not urge the cable attachment bracket to pivot bout the first axis.
Abstract: A transmission mechanism for transmitting motion with a uniform speed transmission factor between first and second moveable elements comprises a set of cams adapted to rotate with the first moveable element about a revolving axis, and corresponding arrays of spaced-apart rollers connected to the second moveable element for movement therewith. The cams cooperate in relays with the corresponding arrays of spaced-apart rollers to continuously communicate motion between the first and second moveable elements. The cams are in rolling contact with the corresponding arrays of rollers, whereby torque and force transmission can be performed smoothly. Furthermore, the transmission mechanism allows for the reversal of both the direction of the input speed and the roles of the first and second moveable elements.
March 26, 2001
Date of Patent:
May 7, 2002
Jorge Angeles, Max Antonio Gonzalez-Palacios
Abstract: An lever assembly for an adjustable steering column, comprising a bracket assembly extending from the adjustable steering column, the bracket having a first and a second bracket arms, a lever arm having an intermediate portion pivotally coupled between the first and second bracket arms such that opposite ends of the lever arm are movable between a first and a second positions; and a lever pin extending from one of the first and second bracket arms and biased into frictional engagement with the lever arm when one of the ends is in said first position. An adjustment member is provided adjacent the biasing member for adjusting the biasing force of the lever pin against the lever arm.
Abstract: An actuator for a papermaking machine. The actuator is designed to function either as a slice lip or coatweight actuator or as a dilution actuator depending on the orientation of a cam disk in the actuator. The drive motor and position sensor in the actuator are in a side by side arrangement allowing for a single cover to enclose both the drive motor and the position sensor. The actuator has a manual adjustment which comes into engagement with the drive motor only when it is desired to manually adjust the actuator. The manual adjustment is designed so that it does not lock with the drive motor and requires only a moderate amount of force to be brought into engagement with the manual shaft. The actuator has a drive block connected to the speed reducer of the actuator. The drive block interfits with the cam disk in a manner to function as a spring loaded splined connection. This connection provides the necessary force to prevent rotary free play of the cam disk.
Abstract: A method and apparatus are provided for manually shifting an electrically controlled transmission (14) to a desired gear setting in the event of a failure includes unlocking a manual shift mechanism (90) from a non-actuatable condition. The manual shift mechanism (90) is linearly moved from the non-actuated condition toward an engageable position with a link arm (70) to linearly move the link arm in response to further linear movement of the manual shift mechanism after engagement therewith. A transmission gear (16) is rotated to manually shift the transmission (14) to the desired gear setting through linear motion of the link arm (70).
Abstract: A variable-ratio steering system includes a steering shaft connected to a manually-operated handle, a ball nut engaging with the steering shaft and a ball-bearing-screw mechanism converting rotary motion of the steering shaft into axial displacement of the ball nut in the axial direction of the steering shaft. Also provided is a second motion converter which generates a rotational displacement of the ball nut about the axis of the steering shaft with the axial displacement of the ball nut. A steering pinion gear block is connected to the ball nut by means of serrations to rotate together with the ball nut. A rack is engaged with the pinion gear block and connected at both ends via knuckle mechanisms to steered wheels for varying a steer angle at the steered wheels depending on the displacement of the rack.
Abstract: A vehicle gearbox includes a basic gearbox with a main shaft that is an input shaft to a high-low range gearset joined to the basic gearbox. The basic gearbox has a control shaft, which, rotated in either direction from a neutral position, engages a selected gear. The control shaft is coordinated with a lock-out device which is controlled by a first sensor, which senses the speed of the output shaft from the range gearbox, and a second sensor which senses the engaged range in the range gearbox. An operating device holds the lock-out device in a lock-out position which prevents rotation of the control shaft towards the position for the lowest synchronized gear in the basic box, when the vehicle speed exceeds a predetermined speed in the low range of the gearbox.
August 8, 2000
Date of Patent:
April 16, 2002
Volvo Lastvagnar AB
Ronald Olsson, Sverker Alfredsson, Stig-Erik Johannesson
Abstract: A gearshift fork (2, 3) for a manual transmission of an automotive vehicle is fixed on a selector rod and engages with its bifurcated section into a peripheral groove of a sliding sleeve. The bifurcated section (6) extends transversely of the central longitudinal axis of the selector rod and comprises a stiffening. To create an economic configuration of the gearshift fork (2, 3) and enable a production in large series, the gearshift fork is manufactured as a complete component by shaping without chip removal.
July 13, 2000
Date of Patent:
April 9, 2002
INA Walzlager Schaeffler oHG
Wolfgang Steinberger, Klaus Kramer, Arnold Trissler