Abstract: An optical lens stack includes an inner ring of a mounting structure containing axially spaced circumferential lens mounting surfaces on an inside diameter of the inner ring. The inner ring further includes a groove over a fixed axial length on the outer diameter. An outer ring formed to fit over the inner ring contains a groove on the inner diameter of the outer ring that corresponds to the groove on the inner ring and forms a circumferential cavity when the outer ring is mounted on the inner ring. The resulting cavity is filled with an energy absorbing material and serves as a vibration isolator for the lens stack.

Abstract: Disclosed is a vibration-damping support device, including a housing, and a core shaft having one end passing through the housing to connect with a vibration source. The vibration-damping support device further includes two elastic members arranged within the housing and spaced apart from each other. Each elastic member includes an inner hole, so that it can be mounted on the core shaft. Each elastic member includes an elastic rubber body, and a plurality of metal plates that are embedded in the elastic rubber body and parallel to each other. The elastic rubber body extends beyond the metal plates in a radial direction. With this vibration-damping support device, a variable stiffness can be achieved.

Abstract: A high frequency vibration spindle system which includes a spindle having a spindle housing and a spindle shaft disposed in the spindle housing; a toolholder, engaged with the spindle and adapted to be engaged with a tool; an electric power transmission device disposed at the front end or a rear end of the spindle, including a first coil and a second coil; the first coil is disposed on the spindle housing, and the second coil is disposed on the spindle shaft to be rotated with the spindle shaft coaxially; the first coil and the second coil are spaced with a gap; the second coil is adapted to receive an electric power from the first coil with a non-contact induction method; and a transducer, adapted to be controlled to vibrate the tool and disposed in the toolholder and electrically connected with the second coil to receive the electric power.

Abstract: The disclosed invention is a Torsional Vibration Damper (TVD) that employs the use of two novel features namely the receiving ledge and the guiding ledge that allows it to have the following four advantages over conventional TVDs: (1) a reduced volume of elastomer; (2) a narrower axial thickness; (3) enhanced performance due to increased real-estate for the ring; and (4) an ability to be assembled without elaborate fixturing or bonding; while not compromising its structural and modal stability.

Abstract: A damper device is capable of attenuating fluctuations in torque. The damper device includes a first rotor and a second rotor rotatable relatively to the first rotor. The damper device also includes a plurality of elastic members elastically coupling the first rotor and the second rotor. The second rotor is rotatable relatively to the first rotor while held by the first rotor with use of the plurality of elastic members.

Abstract: A torque fluctuation inhibiting device includes plural centrifugal elements movable in a radial direction when receiving a centrifugal force generated in rotation of a rotor and a mass body. Each centrifugal element receives a rotational moment of inertia about an axis arranged in parallel to a rotational axis of the rotor when receiving the centrifugal force. When a relative displacement is produced between the rotor and the mass body in a rotational direction due to the centrifugal force acting on each centrifugal element, each cam mechanism converts the centrifugal force into a circumferential force directed to reduce the relative displacement. Support portions are provided on either the rotor or the mass body, and each makes contact with part of each centrifugal element when each centrifugal element receives the rotational moment of inertia. Each support portion supports each centrifugal element such that each centrifugal element is movable in the radial direction.

Abstract: A vibration reduction device (5) including: a counterweight (6) provided to a crankshaft (14) of a Stirling engine (1); and an electric balancer (7) being attached to a crankcase (15) and including a balance weight (73) rotated by an electric motor (74). An inertial force of the counterweight (6) is set to approximately a half of a combined inertial force of pistons (12, 13). Inertial force of balance weight×L2=½×combined inertial force of pistons×L1 is satisfied when a mass of the balance weight is set, where L1 denotes a distance between a vibration reduction target position and a rotation center (O1) of the crankshaft (14), and L2 denotes a distance between the vibration reduction target position and a rotation center (O2) of the balance weight (73).

Abstract: A helical toothed belt includes: a back portion in which a tension member is buried and; a plurality of tooth portions arranged on one surface of the back portion with inclination to a belt width direction, in which a surface of the tooth portion and a portion of the one surface of the back portion are formed of a tooth fabric, the other surface of the back portion is formed of a back fabric, the plurality of tooth portions have a tooth pitch of 2 mm or more and 5 mm or less, and the tension member is a twisted cord containing a high-strength glass fiber or a carbon fiber and having a diameter of 0.2 mm or more and 0.6 mm or less.

Abstract: An inner peripheral surface of a belt is cogged so that cogs extend in a belt width direction and are arranged adjacent to one another at regular intervals in a belt length direction. A tip portion of the cog and a bottom portion of a groove formed between the cogs have curved surfaces each having an arc-shaped cross section. A curvature radius of a cross-sectional shape of the bottom portion of the groove is set to be larger than a curvature radius of a cross-sectional shape of the tip portion of the cog.

Abstract: A device configured to join two ropes includes a device body that extends from a first end to a second end along a central axis, the device body including an inner surface defining a through hole that extends through both the first end and the second end, the device body defining an inner dimension. The device defines an unassembled configuration in which the first and second ropes are positioned outside the through hole and the inner dimension is smaller than both the first outer diameter and the second outer diameter. The device defines an assembled configured in which a portion of each of the first and second ropes are positioned in the through hole, and the inner dimension is greater than both the first outer diameter and the second outer diameter.

Abstract: A torque transfer device has plural planets arranged for planetary rotation about one or more sun gears and within one or more ring gears. Each planet includes at least one planetary gear set comprising plural planetary gears connected to rotate together, but having a different diameter to form a differential gear system. To improve load sharing, the plural planetary gears of each planetary gear set may have a different helical angle, the plural planetary gear sets being axially movable with respect to one another. Alternatively or in addition, the planetary gears may be made flexible with respect to radial forces.

Abstract: A main drive device of a planocentric set for three armed forces, including inner ring, outer ring, rolling column between the inner and outer rings at a side closer to the inner ring, and rolling pin shaft pairs installed between the inner and outer rings at a side closer to the outer ring; the inner ring is installed on an eccentric shaft and rotates driven by the eccentric shaft; the eccentric shaft is driven by a prime mover; when the rolling column is in contact with the inner ring, it contacts one of the two neighboring rolling pin shaft pairs to transmit power to the rolling pin shaft pairs in clockwise and counter-clockwise rotation; the rolling pin shaft pair drives the outer ring to rotate; the outer ring drives a planet wheel spoke to rotate, to drive a planocentric set planet wheel, and implement drive of a planocentric set.

Abstract: A planetary gear with a sun wheel, a hollow wheel and a planetary carrier on which a planetary wheel is rotatably mounted. In the axial direction on a first side of the planetary carrier, the sun wheel and hollow wheel include connection areas for coupling the sun wheel and hollow wheel to rotatable or torque-proof areas of an engine. The planetary carrier has a connection area for attaching to rotatable or torque-proof areas of the engine on its opposite second side. The structural component stiffnesses of the sun wheel, planetary carrier, the hollow wheel and the planetary wheel are adjusted to each other such that, during operation they have twistings in the axial direction of the planetary gear that respectively qualitatively correspond to each other between the connection areas and side areas facing away from the connection areas due to the respectively applied torques.

Abstract: A planetary gear train of an automatic transmission includes an input shaft for receiving an engine torque; an output shaft for outputting a torque; a first planetary gear set having first, second, and third rotational elements; a second planetary gear set having fourth, fifth, and sixth rotational elements; a third planetary gear set having seventh, eighth, and ninth rotational elements; and a fourth planetary gear set having tenth, eleventh, and twelfth rotational elements. The gear train further includes a first shaft and a second shaft each selectively connected with the input shaft; a third shaft fixedly connected with the output shaft; a fourth shaft fixedly connected with the first, sixth and eighth elements; a fifth shaft fixedly connected with the ninth and tenth elements; and a plurality of shafts, each selectively connected to the transmission housing and fixedly connected to one of the rotational elements of the planetary gear sets.

Abstract: A planetary gear train includes input and output shafts, first to fourth planetary gear sets respectively having first to third, fourth to sixth, seventh to ninth, and tenth to twelfth elements. The planetary gear train includes a first shaft connected with the third, fifth, and eighth elements and selectively connected with the input shaft, a second shaft connected with the fourth element and selectively connected with the input shaft, a third shaft connected with the ninth and twelfth elements and fixedly connected with the output shaft, and a fourth shaft connected with the first, sixth, and seventh elements, a fifth shaft fixedly connected with the eleventh element. The planetary gear train includes a plurality of additional shafts selectively connected to the transmission housing and connected to an element of the first and fourth planetary gear sets that is not connected with any of the first to seventh shafts.

Abstract: A planetary gear train includes input and output shafts, first to fourth planetary gear sets respectively having first to third, fourth to sixth, seventh to ninth, and tenth to twelfth elements. The planetary gear train includes a first shaft connected with the first element and the sixth rotational element, and selectively connected with the input shaft, a second shaft connected with the ninth element and selectively connected with the input shaft, a third shaft connected with the eleventh element and the output shaft, a fourth shaft connected with the second, fifth, and twelfth rotational elements, a fifth shaft connected with the fourth and seventh rotational elements. The planetary gear train includes a plurality of additional shafts each selectively connecting a corresponding element to a transmission housing, the corresponding element being an element of the first, third, and fourth planetary gear sets that is not interconnected.

Abstract: A planetary gear train includes an input shaft and an output shaft. A first planetary gear set has first, second, and third rotational elements. A second planetary gear set has fourth, fifth, and sixth rotational elements. A third planetary gear set has seventh, eighth, and ninth rotational elements. A fourth planetary gear set has tenth, eleventh, and twelfth rotational elements. A first shaft is fixedly connected with the twelfth rotational element and fixedly connected with the input shaft. A second shaft is fixedly connected with the fifth rotational element and the eighth rotational element, and fixedly connected with the output shaft. A third shaft is fixedly connected with the fourth rotational element. A fourth shaft is fixedly connected with the seventh rotational element. A fifth shaft is fixedly connected with the sixth rotational element and the ninth rotational element.

Abstract: A planetary gear train of an automatic transmission for a vehicle may include an input shaft configured to receive torque of an engine and an output shaft configured to output torque. The planetary gear train further includes a plurality of planetary gear sets comprising rotation elements, a first plurality of shafts connected to one of the rotation elements of the plurality of planetary gear sets, and a second plurality of shafts. Each of which is selectively connected to a transmission housing and fixedly connected to one of the rotation elements of the plurality of planetary gear sets that is not fixedly connected with any of the first plurality of shafts.

Abstract: A multi-stage transmission includes an input shaft, an output shaft, a first planetary gear set, a second planetary gear set, a third planetary gear set, and a fourth planetary gear set. Each planetary gear set includes three rotating elements. Six shifting elements are connected to the rotating elements of the first, the second, the third and the fourth planetary gear sets. A first rotating element of the first planetary gear set is fixedly connected to a first rotating element of the second planetary gear set and a second rotating element of the third planetary gear set and is selectively connected to the input shaft. A second rotating element thereof is fixedly connected to a third rotating element of the third planetary gear set and a third rotating element of the fourth planetary gear set. A third rotating element thereof is selectively connected to the input shaft.

Abstract: A vehicle transmission includes: four planetary gear sets and six friction elements which may be combined such that the rotation speed and direction are changed by selectively interrupting operations using the rotation elements of the planetary gear sets and the plurality of friction elements, wherein with such a shifting action, the vehicle may be driven by implementing gear ratios of at least ten forward stages and at least one reverse stage.

Abstract: A multi-stage transmission for vehicles includes an input shaft and an output shaft, a first planetary gear set, a second planetary gear set, a third planetary gear set, and a fourth planetary gear set configured to transmit rotary force between the input shaft and the output shaft. Each of the planetary gear sets has three rotary elements. Six gear shift elements are connected to the rotary elements of the planetary gear sets.

Abstract: A planetary gear train of an automatic transmission may include: an input shaft receiving torque of an engine; an output shaft transmitting torque to an output gear; a first planetary gear set including first, second, and third rotation elements; a compound planetary gear set including fourth, fifth, sixth, and seventh rotation elements; a fourth planetary gear set including eighth, ninth, and tenth rotation elements; a first shaft fixedly connected to the ninth rotation element and the input shaft; a second shaft fixedly connected to the second and sixth rotation elements and fixedly connected to the output shaft; a third shaft fixedly connected to the first and tenth rotation elements; a fourth shaft fixedly connected to the fourth rotation element; a fifth shaft fixedly connected to the fifth rotation element; a sixth shaft fixedly connected to the seventh rotation element; and a plurality of shafts selectively connected to a transmission housing.

Abstract: A belt connection structure for a vehicle is provided. The belt connection structure includes a damper pulley mounted on a crankshaft of an engine, a water pump mounted on the engine separated in an upward direction from the damper pulley, a mild hybrid starter and generator on an upper part of the engine separated from the water pump, and an air conditioner mounted on the engine separated from the compressor damper pulley. A first belt connects the damper pulley, water pump, and mild hybrid starter and generator and a second belt connects the damper pulley and the air conditioner compressor. A first tensioner is mounted on the mild hybrid starter and generator and selectively in contact on the first belt to adjust a tension and a second tensioner is mounted on a chain cover and selectively in contact under the first belt to adjust the tension of the first belt.

Abstract: The improved gearbox mechanism of the present invention includes a plurality of cam-actuated gear block assemblies, which transfer power from a power shaft to a secondary or output gear element. Each gear block assembly includes a gear block having a surface that periodically interfaces with a secondary or output gear element. In a preferred embodiment the interface surface comprises a plurality of projections or teeth which correspond to complementary holes, projections or gear teeth on the output gear element. Each gear or torque block assembly further includes pivot assemblies, which connect or link the torque block to a cam assembly, which in turn is connected to a power source. The cam assembly comprises a set of corresponding cam elements arranged in a tandem configuration and having a unique circuitous pathway or groove formed therein so that the movement of the torque block may be controlled in three dimensions in accordance with a certain design parameter.

Abstract: The system of the present disclosure replaces the reduction gearbox of a conventional system with a screw shaft and nut system wherein the position of the nut feeds into a linear sensor that determines the stabilizer position based on the nut position. The screw shaft and nut system in the position sensor train is reflective of the screw shaft and nut system and the stabilizer movement end of the assembly whereby rotation of the shaft causes axial movement of the nut along the shaft.

Abstract: A linear actuator includes a sliding rod, a motor and a buffer assembly. The motor connects the sliding rod to drive the sliding rod. The buffer assembly is disposed at an end of the sliding rod and includes an elastic element and an outer sleeve. The elastic element is received in the outer sleeve. The sliding rod connects the outer sleeve. The outer sleeve is movable along an axial direction of the sliding rod. The elastic element separately pushes an inner wall of the outer sleeve and the sliding rod. The elastic element is pre-compressed along the axial direction of the sliding rod. The buffer assembly can absorb vibration and impact caused by the motor driving the sliding rod.

Abstract: An electric actuator includes a housing configured to accommodate and hold a motor part and a motion conversion mechanism part. The motion conversion mechanism part includes: a screw shaft; and a nut member. An operation part mounted to the screw shaft is configured to operate an object to be operated in an axial direction through a linear motion of the screw shaft in the axial direction along with a rotation of the nut member. A terminal part (terminal main body) configured to hold an electrical component includes a tubular portion sandwiched by members forming the housing from both sides in the axial direction, and has an opening portion formed in in the tubular portion and configured to cause an inside and an outside of the housing to communicate with each other. The screw shaft is formed into a hollow shape having a through hole extending in the axial direction.

Abstract: A ratcheting belt system with opposed rollers and quick release capability provides two opposed rollers which frictionally allow a tightening belt of a safety harness, cargo securement system, between themselves compressively, via a manually operated ratcheting handle such that the excess length of belt distal to the active portion used for securement is passed through the system substantially parallel to the active portion of belt, and need not be contained on a spool. A ratchet mechanism prevents back-out of the belt through the buckle, a manually operated lever provides for opening of the rollers away from each other and easy, quick exit of the driver, passenger, or cargo from securement.

Abstract: A planetary gear train of an automatic transmission for a vehicle may include: an input shaft receiving torque of an engine; an output shaft outputting torque; a direction changer disposed on an input shaft side and transmitting the torque of the engine to the input shaft with or without change of rotation direction, or disposed on an output shaft side and outputting the torque of the output shaft with or without change of rotation direction; a first planetary gear set including first, second and third rotation elements; a compound planetary gear set including fourth, fifth, sixth, and seventh rotation elements by combining second and third planetary gear sets; a fourth planetary gear set including eighth, ninth, and tenth rotation elements.

Abstract: Provided is a shift control arrangement in a gearbox, comprising a first shift rod with a first end part connectable to a first power means and second end part connected to a first shift fork; a second shift rod with first end part connectable to a second power means and second end part connected to a second shift fork; a first set of grooves in the first shift rod, a second groove in the second shift rod; and a lock pin between the first and second shift rods, which lock pin, with the first set of grooves and the second groove restrict and/or allow axial movement of the respective first and second shift rods. The first end part of the first shift rod is provided with an axial directed cut out for non-conflicting with the lock pin, and the first end part of the second shift rod is provided with a control surface for axial movement of the lock pin.

Abstract: A hybrid transmission for a front-wheel drive vehicle includes a multi-speed transmission, a differential, an electric motor, and a planetary gear set. The multi-speed transmission includes an input shaft with a first axis. The differential includes a housing with a second axis, radially offset from the first axis. The electric motor is concentric with the second axis. The planetary gear set connects the multi-speed transmission, the differential, and the electric motor. In some example embodiments, the planetary gear set includes a sun gear drivingly engaged with the multi-speed transmission, a planet carrier drivingly engaged with the differential, and a ring gear drivingly engaged with the electric motor.

Abstract: The wave generator of a strain wave gearing is provided with an ellipsoidally contoured wave generator plug and a wave generator bearing. The wave generator bearing is provided with an annular body fitted between inner and outer races in a sliding contact state. The annular body is composed of an endless coil spring and has a rigidity that is able to maintain a constant gap between the inner and outer races. The annular body also has a specified overall flexibility in the radial direction so that the annular body can be flexed into an ellipsoidal shape by the wave generator plug. Since sliding occurs between the annular body and the inner race when the wave generator plug rotates, it is possible to generate a wave motion in an externally toothed gear with a small rotational torque.

Abstract: A transmission includes a first shaft that is rotatable in a circumferential direction about a central axis extending in one direction, a second shaft that is rotatable in the circumferential direction and in series with the first shaft in an axial direction in which the central axis extends, a tubular housing, an internal gear including an internal tooth portion, and held by an inner surface of the housing, an annular external gear connected to the second shaft, and including an external tooth portion that partially meshes with the internal tooth portion, and a wave generator connected to the first shaft to deform the external gear such that meshing positions between the internal tooth portion and the external tooth portion shift in the circumferential direction. The internal gear and the housing are defined by separate members.

Abstract: A transmission includes a first shaft rotatable in a circumferential direction about a central axis extending in one direction, a second shaft rotatable in the circumferential direction and in series with the first shaft in an axial direction in which the central axis extends, an internal gear including an internal tooth portion, a housing that houses the internal gear therein, an annular external gear connected to the second shaft and including an external tooth portion that partially meshes with the internal tooth portion, a cam that is rotatable together with the first shaft, and includes a connection hole that houses a portion of the first shaft, and a bearing between an inner circumferential surface of the external gear and an outer circumferential surface of the cam. The cam includes an inner circumferential surface defining the connection hole and a recessed portion recessed in radial directions centered on the central axis.

Abstract: A transmission includes a first shaft rotatable in a circumferential direction about a central axis extending in one direction, a second shaft rotatable in the circumferential direction and in series with the first shaft in an axial direction in which the central axis extends, an internal gear including an internal tooth portion, a housing that houses the internal gear therein, an annular external gear connected to the second shaft and including an external tooth portion that partially meshes with the internal tooth portion, a cam that rotates together with the first shaft, and including a connection hole that houses a portion of the first shaft, and a bearing located between an inner circumferential surface of the external gear and an outer circumferential surface of the cam. An outer circumferential surface of the portion of the first shaft housed in the connection hole includes a recessed portion recessed in radial directions centered on the central axis.

Abstract: A gear train for an engine is provided with a driving gear and a driven gear. The driving gear is formed by a laminate structure of a plurality of plastic sheets and a plurality of metal sheets, with the plastic and metal sheets alternating with one another. The driven gear is formed by another laminate structure of another plurality of plastic sheets and another plurality of metal sheets, with the plastic and metal sheets alternating with one another. The gear train may be provided for use with an engine crankshaft and an associated balance shaft. A method of forming the gear is also provided.

Abstract: A vehicular breather device through which an inside space of a casing accommodating a power transmitting system of a vehicle is open to an outside atmosphere outside the casing, the vehicular breather device including: a second shaft rotated with a rotary motion of a first shaft of the power transmitting system transmitted thereto through a power transmitting member, the second shaft being accommodated within the casing, having a breather chamber formed therethrough, and being disposed so as not to contribute to transmission of a vehicle drive force through the power transmitting system; and a breather disposed so as to extend through a communication hole formed through the casing, for communication between the breather chamber and the outside atmosphere outside the casing.

Abstract: A method and a lubrication system for lubricating a transmission system component. The lubrication system may include a lubrication system reservoir for storing a lubrication liquid; and a distribution system. The distribution system may be configured to refill, with the lubrication liquid, a transmission system reservoir that is configured to lubricate the transmission system component. The refill occurs while the transmission system component and the lubrication system are positioned within a vacuum chamber.

Abstract: An isochoric mechanism for changing transmission fluid composed of a box component, two bags, two valves, a board, plastic tubing, and two adapters. The mechanism ensures that the same amount of new transmission fluid is injected into the transmission system as the amount of old transmission fluid that is drained out of the transmission fluid reservoir. Mechanism is driven by gravity, and usage requires two supports that are of equal height, to support the body of the mechanism using the board component. Valves ensure that the system can be stored and reused. Automatically collects old transmission fluid for recycling, and upon return to the provider, the mechanism may be refilled with new transmission fluid.

Abstract: A transmission includes a transmission housing with an oil reservoir and a transmission housing cover to close an opening of the transmission housing. A transmission shaft receives a toothed wheel and which can be driven by way of a motor. A cooler is arranged on the outside of the transmission housing, with a fan arranged on the outside of the transmission housing feeding cooling air to the cooler. An oil delivery pump pumps oil through oil delivery lines from the oil reservoir to the cooler, with an oil return line routing oil from the cooler back to the transmission housing. A separate drive motor drives the fan and the oil delivery pump independently of the transmission shaft , with the drive motor, the fan, the cooler and the oil delivery pump being fastened to the transmission housing cover.

Abstract: Provided is a lubricant guiding structure in an automatic transmission in which a baffle plate configured to regulate the movement of a lubricant agitated by a driven sprocket is provided at one side, where an oil pump is located, in the direction of a rotational axis of the driven sprocket. As viewed from the rotational axis direction, a division wall disposed to extend across a chain is provided closer to the chain than a base of the baffle plate. As viewed from the rotational axis direction, the baffle plate is provided with a guide wall extending along a torque transmission-side chain of the chain wound on the driven sprocket. As viewed from the rotational axis-direction, the guide wall includes an inclined portion inclined in the direction coming closer to the chain as the distance to the distal end side decreases.

Abstract: A gear with an oil distribution system includes a first area at least approximately rotationally symmetrical with, in its radially inner area, an opening. Via the opening, oil is introduced from a second area into the first area during operation. Downstream of the opening with respect to the second area, the first area includes a collecting area extending in the radial and circumferential directions of the first area. An acceleration appliance for the oil, connected to the first area, is provided in the collecting area so a substantially radial flow direction in the direction of a radially outer area of the collecting area is applied to the oil that is present in the collecting area when the first area rotates. An area of the engine provided downstream of an outlet opening is in or can be brought into operative connection with the main oil supply circuit.

Abstract: A planetary gear device for a turbomachine includes a planetary carrier and planetary wheel arranged in an axial direction between two planetary carrier areas connected to a support appliance, with the planetary wheel rotatably mounted on the support appliance. On outer sides facing away from the planetary wheel, the planetary carrier areas include cone surfaces that enclose connection areas with the support appliance, with diameters decreasing with increasing axial distance from the planetary wheel. Cone surfaces of a tensioning appliance radially enclose and are respectively adjusted thereto and act together such that a force that respectively results from an axial tensioning force of the tensioning appliance applied on the cone surfaces of the planetary carrier areas is applied at the connection areas between the support appliance and the planetary carrier areas. The tensioning appliance cone surfaces operatively connect via a coupling element.

Abstract: A shift control device includes: a hydraulic circuit, an actuation valve, a control unit, and a pressure holding valve. The hydraulic circuit is provided with a supply oil passage coupled to a hydraulic oil supply source, a drain oil passage coupled to a tank, and an actuator oil passage coupled to a travel actuator. The actuation valve is provided in the hydraulic circuit and couples the actuator oil passage to the supply oil passage or the drain oil passage. The control unit switches the actuation valve in accordance with a shift position command of a shift operation device. The pressure holding valve is provided in the drain oil passage and holds a pressure of the drain oil passage at a predetermined pressure.

Abstract: A shift control device includes a hydraulic circuit and a control unit. The hydraulic circuit is provided with multiple actuation valves. The control unit is configured to switch positions or states of each of the multiple actuation valves in accordance with a shift position command by a shift operation device. The hydraulic circuit is configured to couplesa hydraulic oil supply source to one of travel actuators in an automatic transmission in multiple circuit states where the position or the state of at least one of the multiple actuation valves differs.

Abstract: A multi-step transmission for a motor vehicle comprises an input shaft, an output shaft, a first transmission stage and a second transmission stage, a clutch which can be transferred into three clutch positions to drivingly connect the input shaft and the output shaft with each other or disconnect them from each other; and an actuating assembly with a setting element that is movable in three setting positions and is connected to a movable clutch part of the clutch, wherein the actuating assembly comprises first and second electromagnetically operable actuators which can be operated independently from one another and which jointly act on the setting element such that the setting element can be transferred by the first and the second actuator into the three setting positions. An electric drive can have such a multi-step transmission.

Abstract: A static gasket and method of construction thereof is provided. The gasket includes a functional layer constructed of one type of metal having an opening bounded by an inner periphery an outer periphery. The gasket further includes a carrier layer constructed of a different metal than the functional layer. The carrier layer has an opening bounded by an inner periphery configured to receive the outer periphery of the functional layer in a line-to-line or loose fit. The functional layer is configured in substantially coplanar relation with the carrier layer with a first portion of the outer periphery of the functional layer being welded to a radially aligned first portion of the inner periphery of the carrier layer. A second portion of the outer periphery of the functional layer remains detached from a radially aligned second portion of the inner periphery of the carrier layer.

Abstract: A packing arrangement for a fluid end of a reciprocating pump is received within a packing box and is arranged to form a seal with a plunger. The packing arrangement includes a plurality of separate annular rings arranged in an abutting relationship with one another within the packing box, and a header ring disposed within the plurality of separate annular rings, the header ring including an inner surface that is non-cylindrical and that is arranged to abut the plunger, a high pressure side that is arranged in a female chevron shape, and a low pressure side opposite the high pressure side. A packing nut is engaged with the fluid end and operable to compress the header ring and the plurality of separate annular rings within the packing box.

Abstract: A dynamic sealing device provides sealing between at least a first part and at least a second part having a relative rotational movement in relation to the first part. The device is formed by a seal including a body portion; a first main lip extending from the body portion; a second main lip extending from the body portion, the first lip facing the second lip; the first and second lips being configured to be energized by a first fluid so as to seal at least one of the first part and second part. The seal further includes at least one additional lip located on the body portion remotely from the first and second lips and being configured to be energized by a second fluid so as to seal at least the other of the first part and second part.

Abstract: Disclosed is a dynamic sealing device configured to provide sealing between at least a first part and at least a second part having a relative rotational movement in relation to the first part. The device includes a seal provided with a first lip and with a second lip extending from a body portion, the first lip facing the second lip, the seal being formed from a first predetermined material having a first coefficient of friction, and a ring formed from a second predetermined material different from the first predetermined material and having a second coefficient of friction different from the first coefficient of friction. The ring is securely connected with the seal at the location of the body portion and the first coefficient of friction of the first predetermined material forming the seal is greater than the second coefficient of friction of the second predetermined material forming the ring.