Abstract: A friction clutch has a plurality of iron inner clutch plates and a plurality of iron outer clutch plates. Both the clutch plates have sliding surfaces which are friction-engaged each other. A thin carbon film in a diamond form, which functions as a solid lubricant, is formed on each of the sliding surfaces of the outer clutch plates by a known method such as the Chemical Vapor Deposition method. A known nitride treatment or quenching and tempering treatment is applied to the sliding surfaces of the inner clutch plates. A coupling device has a pilot clutch mechanism with the friction clutch and an electromagnetic actuator. As a result, the friction clutch is resistant to wear and the coupling device is excellent in durability.

Abstract: A friction clutch has a plurality of iron inner clutch plates and a plurality of iron outer clutch plates. Both the clutch plates have sliding surfaces which are friction-engaged each other. A thin carbon film in a diamond form, which functions as a solid lubricant, is formed on each of the sliding surfaces of the outer clutch plates by a known method such as the Chemical Vapor Deposition method. A known nitride treatment or quenching and tempering treatment is applied to the sliding surfaces of the inner clutch plates. A coupling device has a pilot clutch mechanism with the friction clutch and an electromagnetic actuator. As a result, the friction clutch is resistant to wear and the coupling device is excellent in durability.

Abstract: A vehicle drive device 20 is composed of an electric motor 20a, a differential gear 20d for distributing and transmitting the drive power from the electric motor 20a to right and left drive wheels, and a clutch 20c for making intermittent the coupling capable of transmitting the drive power between the differential gear 20d side and the electric motor 20a side. The clutch 20c is of the type having a self-locking function and is arranged coaxially of the differential gear 20d at one side of the differential gear 20d.

Abstract: A drive system for an automotive vehicle of the front-and-rear wheel drive type, comprising a primary drive mechanism for drive of a set of front road wheels and an ancillary drive mechanism for drive of a set of rear roar wheels, wherein the front road wheels are driven by operation of the primary drive mechanism at a two-wheel drive mode and wherein the front and rear road wheels are driven by operation of both the primary and ancillary drive mechanisms at a four-wheel drive mode. In the drive system, a drive power applied to the primary road wheels is restricted to a predetermined value when the vehicle is driven by the primary and ancillary drive mechanisms at the front-and-rear wheel drive mode.

Abstract: A drive system for an automotive vehicle of the front-and-rear wheel drive type, comprising a primary drive mechanism for drive of a set of front road wheels and an ancillary drive mechanism for drive of a set of rear roar wheels, wherein the front road wheels are driven by operation of the primary drive mechanism at a two-wheel drive mode and wherein the front and rear road wheels are driven by operation of both the primary and ancillary drive mechanisms at a four-wheel drive mode. In the drive system, a drive power applied to the primary road wheels is restricted to a predetermined value when the vehicle is driven by the primary and ancillary drive mechanisms at the front-and-rear wheel drive mode.

Abstract: A friction clutch includes an iron inner clutch plate and two iron outer clutch plates. Each clutch plate has a sliding surface that friction-engages with the other clutch plates. A diamond-like carbon film containing silicon, which functions as a solid lubricant, is formed on the sliding surface of each outer clutch plate through a conventional method such as plasma chemical vapor deposition. The diamond-like carbon film contains 1 wt % to 80 wt % of silicon. A coupling device includes a pilot clutch mechanism that has the friction clutch and an electromagnetic actuator. As a result, the friction clutch has an improved resistance to wear, and the coupling device is durable.

Abstract: A friction clutch has a plurality of iron inner clutch plates and a plurality of iron outer clutch plates. Both the clutch plates have sliding surfaces which are friction-engaged each other. A thin carbon film in a diamond form, which functions as a solid lubricant, is formed on each of the sliding surfaces of the outer clutch plates by a known method such as the Chemical Vapor Deposition method. A known nitride treatment or quenching and tempering treatment is applied to the sliding surfaces of the inner clutch plates. A coupling device has a pilot clutch mechanism with the friction clutch and an electromagnetic actuator. As a result, the friction clutch is resistant to wear and the coupling device is excellent in durability.

Abstract: A driving force transmission system comprising: a coupling case and a shaft arranged rotatably relative to each other; a pilot clutch and a main clutch for controlling a torque transmission between the coupling case and the shaft; an electromagnet for controlling the actions of the pilot clutch and the main clutch; and oil retaining the functions of the pilot clutch and the main clutch. This system further comprises a coupling case, a shaft, a rotor, and X-ring and an O-ring isolating a coupling oil chamber, in which the pilot clutch and the main clutch are arranged, liquid-tight from the surrounding space.

Abstract: An impact absorbing mechanism for absorbing an impact load input between receiving portions at a predetermined distance from each other is provided; in the impact absorbing mechanism, a dispersing transferring portion for dispersing and transferring the input impact load in two directions is formed by connecting respective one end sides of two load transferring members, impact absorbing members for absorbing dispersed impact loads in directions along the transferring members and supported by receiving stopping portions are disposed on the other end sides of the respective load transferring members, a connecting portion of the load transferring members is positioned to be closer to load input sides than to the other end sides of the respective load transferring members, and the input impact load is dispersed and absorbed in two directions; thereby, it is possible to obtain an impact absorbing mechanism by which impact energy absorbing performance in a displacement initial stage is enhanced to carry out efficie

Abstract: A driving force transmission system comprising: a coupling case and a shaft arranged rotatably relative to each other; a pilot clutch and a main clutch for controlling a torque transmission between the coupling case and the shaft; an electromagnet for controlling the actions of the pilot clutch and the main clutch; and oil for retaining the functions of the pilot clutch and the main clutch. This system further comprises a coupling case, a shaft, a rotor, an X-ring and an O-ring for isolating a coupling oil chamber, in which the pilot clutch and the main clutch are arranged, liquid-tight from the surrounding space.

Abstract: A driving force transmission system comprising: a coupling case and a shaft arranged rotatably relative to each other; a pilot clutch and a main clutch for controlling a torque transmission between the coupling case and the shaft; an electromagnet for controlling the actions of the pilot clutch and the main clutch; and oil for retaining the functions of the pilot clutch and the main clutch. This system further comprises a coupling case, a shaft, a rotor, an X-ring and an O-ring for isolating a coupling oil chamber, in which the pilot clutch and the main clutch are arranged, liquid-tight from the surrounding space.

Abstract: An impact absorbing mechanism for absorbing an impact load input between receiving portions at a predetermined distance from each other is provided; in the impact absorbing mechanism, a dispersing transferring portion for dispersing and transferring the input impact load in two directions is formed by connecting respective one end sides of two load transferring members, impact absorbing members for absorbing dispersed impact loads in directions along the transferring members and supported by receiving stopping portions are disposed on the other end sides of the respective load transferring members, a connecting portion of the load transferring members is positioned to be closer to load input sides than to the other end sides of the respective load transferring members, and the input impact load is dispersed and absorbed in two directions; thereby, it is possible to obtain an impact absorbing mechanism by which impact energy absorbing performance in a displacement initial stage is enhanced to carry out efficie

Abstract: A driving force transmission system comprising: a coupling case and a shaft arranged rotatably relative to each other; a pilot clutch and a main clutch for controlling a torque transmission between the coupling case and the shaft; an electromagnet for controlling the actions of the pilot clutch and the main clutch; and oil for retaining the functions of the pilot clutch and the main clutch. This system further comprises a coupling case, a shaft, a rotor, an X-ring and an O-ring for isolating a coupling oil chamber, in which the pilot clutch and the main clutch are arranged, liquid-tight from the surrounding space.

Abstract: A bumper reinforcement has a generally reversely positioned U-shaped cross section, which is adapted to be combined with a bumper face having a generally U-shaped cross section to constitute a bumper. The bumper reinforcement is removably assembled to within an opening of the bumper face with an opening side of the bumper reinforcement directed toward the bumper face. Also, the bumper reinforcement has a plurality of vertical reinforcing ribs that extend vertically to link upper face portion and lower face portion of the bumper reinforcement with each other, and for segments partitioned by the vertical reinforcing ribs, diagonal reinforcing ribs extend diagonally in the segments and stretched diagonally across vertical reinforcing ribs on both sides of each segment, linking them with each other. The vertical reinforcing ribs and the diagonal reinforcing ribs are integrally molded in the bumper reinforcement.

Abstract: There is disclosed a drive force transmission apparatus which includes a first pressing-force generation unit for generating a pressing force in accordance with a rotational speed difference between driving and driven shafts, and a frictional clutch which is brought into an engaged state by the pressing force generated by the first pressing-force generation unit in order to transmit torque in accordance with the rotational speed difference between the driving and driven shafts. The drive force transmission apparatus further includes a second pressing-force generation unit disposed opposite to the first pressing-force generation unit with respect to the frictional clutch. When needed, the second pressing-force generation, unit is operated to bring the frictional clutch into a firmly engaged state, thereby improving the traveling performance of the vehicle under severe traveling conditions, such as an attempt to extract a wheel trapped in a gutter or the like, traveling on a rough road, traveling on sand, etc.

Abstract: A rotary shock absorber suitable for use in a suspension system of a vehicle. The shock absorber is provided with a housing and a rotary shaft supported by the housing for relative rotation thereto. A pressure chamber is formed in the housing and a rotor having a pair of blades is received within the pressure chamber. Further, a pair of partition walls are formed within the pressure chamber to define first and second chambers at both sides of each blade, and the first and second chambers are communicated with each other through throttles. When the rotary shaft is rotated, a high viscous fluid filled within the first and second chambers flows therebetween through the throttles. Due to the flow resistances of the throttles, pressures are generated in the first or second chambers. This pressure generation is used to generate a damping force.

Abstract: A torque transmission device coaxially arranged between a pair of rotary shafts transmits rotational torque in response to relative rotation therebetween. This device includes an outer cylindrical housing coupled to one of the rotary shafts for rotation therewith, wherein the outer cylindrical housing receives an inner sleeve shaft coupled to the other of the rotary shafts for rotation therewith, and multiple friction disc clutch which transmits rotational torque between the inner sleeve shaft and the outer cylindrical housing. In the torque transmission device, there are also an actuation piston making the multiple friction disc clutch be in engagement and a pressure generating mechanism generating a pressure according to the relative rotation between the outer cylindrical housing and the inner sleeve shaft to make the actuation piston move toward the clutch.

Abstract: Blowing louver for air conditioners provides plural swinging fins for shifting the direction of the wind conditioned. Each fin has first and second swinging axes which are pivotably supported by first and second link members. The first link member is manually operated so as to swing fins about respective second axes and the second link member is driven reciprocally by a driving mechanism so as to swing fins about respective first axes automatically.

Abstract: A torque transmission device is provided wherein a rotary housing is connected to one of front and rear drive shafts which respectively drive front and rear axles of a four-wheel drive vehicle, while a rotary shaft coaxially carried by the rotary housing is connected to the other of the front and rear drive shafts. The housing receives therein a multiple disc clutch device for transmitting rotational power between the housing and the shaft through friction engagement between alternately arranged outer and inner clutch discs which are respectively rotatable bodily with the housing and the shaft. The housing also receives an axially movable piston to press the clutch discs for friction engagement. An end wall of the housing or an end cap secured thereto and a facing end surface of the piston define an axially narrow circular chamber, within which a rotor with a plurality of radially extending blade portions provided with a pair of slanted surfaces is received to be rotated by the shaft.

Abstract: In a driving power transmission, an input shaft is coaxially rotatably carried in a closed cylinder housing, extending through an operating piston received therein. The operating piston is bodily rotatable with the housing and axially movable relative to the housing and the input shaft. The piston defines at opposite ends thereof a clutch chamber and an axially thin circular space. A multiple disc clutch operable by the piston is provided in the clutch chamber for selectively transmitting a torque from the input shaft to the housing acting as an output shaft. A rotor with diametrically opposite blades is received within the axially thin circular space and is rotatable bodily with the input shaft for compulsorily displacing silicon oil filled in the circular space, so as to generate a pressure therein when relative rotation occurs between the housing and input shaft.