Abstract: A damper disc having torsion springs in series in window holes formed in the input side plate and outlet plate, a support structure disposed between the torsion springs composed of a pair of spring receiving members rotatably linked by a hinge part, and a sub-torsion spring compressively disposed between the spring receiving members and hinged apart with an annular linkage element for preventing outward projection in a radial direction by centrifugal force.

Abstract: A pipe joint has a pipe 11 including an outward facing flange 17, a joint body 10 and a tubular metal fixture 20, and the joint body 10 includes a large opening port 12 and a small opening port 13 concentrically in consecutive order from the end side. The tubular fixture 20 has a stopping portion 22, a springy first claw 21 and a springy second claw 23; and the joint body 10 has a fitting groove 10a in which the first claw 21 fits. Therefore, an assembly work can be simplified, and fingers and jigs can be prevented from being caught in.

Abstract: A pipe joint having a pipe (11) including an outward facing flange (17), a joint body (10), and a tubular fixture (20) covering an outer peripheral part of the joint body (10) and coupling to the pipe (11) with joint body (10). The tubular fixture (20) is composed of springy claws (25) and an inward facing flange (21), so that an assembly work can be simplified and a manufacturing cost can be reduced owing to a decrease in a quantity of parts.

Abstract: A damper disc comprises an output member, a pair of input members located at both side thereof, an intermediate member between each input member and output member, and spring mechanisms for coupling the output member and input member. The input member contains a first edge portion to be engaged with a first end portion of the spring mechanism in a first rotating direction, a spring holding portion, and a second edge portion to be engaged with a second end portion of the spring mechanism; the intermediate member contains a second edge portion to be engaged with the second end portion of the spring mechanism, a spring holding portion, a second engaging portion to be engaged with the input member, and a first engaging portion to be engaged with the output member; and the output member contains a first edge portion to be engaged with the first end portion of the spring mechanism.

Abstract: An automatic transmission having a turbine, a pump, a first stator and a second stator and a speed changer having a planetary gear train composed of first and second planetary gears sharing one planetary carrier in common and a clutch or brake for controlling the planetary gear train. The turbine of the torque converter is coupled to a turbine shaft which transmits power from the turbine to the speed changer. A first stator is provided at a turbine side between the turbine and the pump, the first stator being coupled to a first stator shaft for transmitting power from the first stator to the speed changer a one-way clutch. A second stator is provided at a pump side between the turbine and the pump. The second stator is connected to a housing though a second stator shaft having a one-way clutch for transmitting power in a direction reverse to the rotation direction of the pump. A clutch or brake for controlling rotation speed of the first stator shaft is provided in the course of the first stator shaft.

Abstract: A securing structure and method of a blade for torque converter for use mainly in industrial construction vehicles to provide its rigid and easy-to-manufacture construction. The structure includes plural circular blades which are secured to a concave surface of a shell with some space in the circumferential direction, a core ring which extends along the circumferential direction of the shell and is secured to concave peripheries of the blades. A tab fitting in slot of the shell is formed integrally on the convex periphery of the blade. A tab fitting in a slot of the core ring is formed integrally on the concave periphery of the blade. Ribs extending in the circumferential direction of the shell are only formed on both ends of the convex periphery and concave periphery of the blade. The convex periphery and the concave periphery are brazed to the shell and the core ring respectively.

Abstract: A release device for a clutch including a cylinder aligned coaxially with a release bearing, a cylindrical piston adapted to fit in a cylindrical operation chamber of the cylinder, and an annular packing mounted adjacent an annular end of the piston within the operation chamber, the operation chamber being connected to an external operating pressure control device through a liquid pressure control passage, the piston being axially connected, at its one end positioned outside the operation chamber, to the release bearing, wherein an annular slide member is fixed to an end of the packing which adjoins the piston, the slide member being greater in hardness than the packing and lower in friction coefficient against the piston than the packing.

Abstract: A damper disc comprising an annularly extending retainer plate assembly for holding in position a damper spring circumferentially connecting an annular input plate and an output plate, the retainer plate assembly having a stationary portion fixed to the input plate, a connector portion connected to the spring, and a support portion for supporting the outer periphery of the spring, the input plate being formed on its outer periphery with a cylindrical portion fitted on the outer periphery of the cylindrical support portion, the retainer plate assembly being comprised of an annular plate having the stationary portion, connector portion, and support portion, the stationary portion being fixed by rivets to the input plate, the retainer plate being formed with notches at the outer periphery thereof in the form of an opening and a slit.

Abstract: A viscous liquid damper in which a projection (27) protruding in a notch (20) of a flange (2) is formed on a side plate body (3), so that a liquid chamber in the notch (20) is partitioned into circumferential front and rear divided-chambers (28 & 29) and a main choke (A1) is formed. In order to allow absorption of vibrations of different kinds without mutual confrontation in such a damper; a slider (23) is mated with a bottom edge of the notch (20) in such a manner as slidable in a rotation direction, the main choke (A1) is formed between the slider (23) and the projection (27), stoppers (25) able to mate with the projection (27) are formed on circumferential both ends of the slider (23), and a movable sub-choke (A2) having a flow sectional area smaller than that of the main choke (A1) is formed in the slider (23).

Abstract: In a clutch disc assembly in which facings comprising cerametallic pads stuck to one faces of back plates are secured to both faces of a plate at an outer peripheral part of the clutch disc, a heat insulating material having a thickness which increases from the radial inside to the radial outside is held between the above-mentioned plate at the outer peripheral part and at least one back plate of a facing so that failure in engagement and disengagement of clutch can be avoided by preventing a strain caused by heat to be produced on the part of plate on which the facings are provided.

Abstract: A damper disc capable of maintaining a wide torsional angle by disposing two torsion springs in series within a hole of side plate is disclosed. The support plate disposed between two torsion springs is made of a sheet metal bent member, and is formed approximately in a V-shape opening wider outward in the radial direction, and the shape of the both spring receiving surfaces of the support plate is designed in a surface shape capable of abutting against the entire surface of the end surface of torsion spring, and the boss part is oscillatably coupled to the annular coupling plate by way of a pin at the inner side of the torsion spring in the radial direction.

Abstract: A twin clutch having two clutch discs between a flywheel and a pressure plate and having an intermediate plate between the two clutch discs. In an engaging operation of the clutch, a flywheel-side clutch disc is first held between the intermediate plate and the flywheel, and a pressure-plate-side clutch disc is then held between the pressure plate and the intermediate plate.

Abstract: In a push-type clutch, a facing wear adjustment nearly annular adjust ring with which an outer peripheral part of a diaphragm spring contacts from a side opposite to a flywheel is screwed into an inside face of a pressure plate so as to be movable in a clutch axial direction, so that a worm wheel is rotated by a bracket moving in a clutch axial direction to rotate the adjust ring when a facing is worn out. The adjust ring position can thus be adjusted automatically to a diaphragm spring side by a wear amount of the facing.

Abstract: A clutch disc assembly holding a diaphragm spring using a pair of wire rings clamped by bent tabs of a clutch cover or stud pins, and having a coned disc spring for controlling an increase in a releasing load due to wear of facings of a clutch. An annular coned disc spring urging an outer peripheral portion of the diaphragm spring to a side opposite to the clutch disc is disposed between a pressure plate and the diaphragm spring. An annular support plate is provided and its inner peripheral portion is held between the bent tabs of the clutch cover and the pair of wire rings. The coned disc spring is held by an outer peripheral portion of the support plate and the outer peripheral portion of the diaphragm spring in an elastically deflected condition.

Abstract: A shift limiting valve (110) driven by a control solenoid valve controlled by an electronic control means (40) is installed between a manual shift valve (50) working in cooperation with speed-change operation of driver and shift valves (60) and (62) driven by solenoid valves (S1) and (S2) controlled by the electronic control means (40). The control solenoid valve is controlled by the electronic control means (40) to actuate the shift limiting valve (110) when a vehicle is moving forward at a specified or higher speed so that a planetary gear transmission (12) is not changed to a reverse drive stage even if the driver changes a drive mode to the reverse drive stage.

Abstract: The invention relates to a pull type clutch for releasing the clutch by pulling the inside fulcrum part C3 of the diaphragm spring 8 rearward in the axial direction on the opposite side of the pressure plate side by the release bearing 12, in which an air feeder 18 is disposed on the rear surface of the diaphragm spring 8, and the mounting pedestals 27 of the air feeder 18 are affixed to the pressure plate 7 through the opening 17, and a protrusion 23 projecting to the diaphragm side is formed on the air feeder 18, and the intermediate fulcrum part C2 of the diaphragm spring 8 is held between the protrusion 23 and the fulcrum land 10 of the pressure plate 7. Thereby, smoothness of the release action and prevention of accompanying rotation in release state may be achieved.

Abstract: A clutch cover assembly for a pull-type clutch, in which a threaded part an axis of which is identical with an axis of clutch is formed on a pressure plate, a lever height adjusting ring contacting with an intermediate fulcrum point of a release lever is screwed onto the threaded part of the pressure plate, the lever height adjusting ring is relatively rotated and moved in its axial direction by means of an elastic restoring force of a spiral spring or by means of a change of engine torque and a ratchet mechanism, and a lever height is automatically increased according to a wear amount of a facing.

Abstract: A method of manufacturing a double wrap brake band having three bands, friction facings fastened to each band, and a connecting member connecting outside bands of the three bands with an intermediate band of such bands. A first bracket member is secured to both outside bands, and a second bracket member secured to the intermediate band. The three bands, the connecting member, and the first and second bracket members are all made of sheet metal. Edges, receiving a piston, or an anchor, at their backsides, are integrally formed on the first and second bracket members. The connecting member and the first and second bracket members are secured to the three bands by rivets.

Abstract: A method of securing a blade to a torque converter for use mainly in industrial construction vehicles provides a rigid and easy-to-manufacture construction. The structure includes plural circular blades which are secured to a concave surface of a shell with some space in the circumferential direction, and a core ring which extends along the circumferential direction of the shell and is secured to concave peripheries of the blades. A tab fitting in a slot of the shell is formed integrally on the convex periphery of the blade. A tab fitting in a slot of the core ring is formed integrally on the concave periphery of the blade. Ribs extending in the circumferential direction of the shell are only formed on both ends of the convex periphery and concave periphery of the blade. The convex periphery and the concave periphery are brazed to the shell and the core ring respectively.

Abstract: A lockup clutch of torque converter comprising a front cover as an input part, an impeller linked to the outer circumference of the front cover, a second turbine disposed between the front cover and impeller in a position opposite to the impeller in the axial direction, a first turbine disposed between the impeller and the outer circumference of the second turbine, a stator disposed between the impeller and the inner circumference of the second turbine, a second turbine output part to which the inner circumference of the second turbine is linked, a power take-off support of the first turbine stretching outside the second turbine in the radial direction and between the second turbine and front cover, a first turbine output part to which the inner circumference of the support is linked, and a clutch disc disposed between the support and front cover, being linked to the inside of the front cover by friction, in which the output part of the clutch disc is formed by the folded part of the support.