Abstract: A driving force transmission device for four-wheel-drive vehicle based on the two-wheel drive of rear wheels or front wheels is provided. In the case of the two-wheel drive of rear wheels, a multi-disc clutch mechanism for controlling the driving force distribution to a front wheel output shaft, and a disconnection/connection mechanism for disconnecting and connecting a front wheel differential and a left front wheel drive shaft are provided, and in the two-wheel drive of rear wheels, the dragging torque of the multi-disc clutch mechanism is made smaller than the friction torque of a front wheel driving force transmission section, and the front wheel differential and the left front wheel drive shaft are disconnected by the disconnection/connection mechanism, thereby the rotation of the front wheel driving force transmission section is stopped.

Abstract: The present invention provides a therapeutic agent for nerve damages such as those caused by spinal cord injury or nerve trauma, which includes, as an active ingredient, a low-molecular-weight saccharide composed of at least glucuronic acid and/or N-acetylglucosamine or a pharmaceutically acceptable salt thereof. The present invention also provides a therapeutic agent for nerve damages which includes, as an active ingredient, preferably a low-molecular-weight hyaluronic acid, more preferably hyaluronic acid disaccharide to hyaluronic acid 2,500-saccharide, further more preferably hyaluronic acid disaccharide to hyaluronic acid 50-saccharide, much more preferably hyaluronic acid tetrasaccharide, or a pharmaceutically acceptable salt thereof.

Abstract: A driving force transmitting devices is able to engage a main clutch with a small amount of hydraulic pressure. The driving force transmitting device includes an input shaft and an output shaft, and a main clutch. The device is formed of a primary clutch that intermittently transmits the driving force transmitted from the input shaft, a hydraulic pump that generates a hydraulic pressure, a piston that presses the primary clutch by the hydraulic pressure by the hydraulic pump, and a cam mechanism that presses the main clutch with a press-contact force amplified more than the press-contact force of the piston by utilizing the driving force from the input shaft through the primary clutch, so as to engage the main clutch.

Abstract: The object is to provide a therapeutic drug for traumatic neural disease (disorder) and/or motor function disorder, more particularly, a therapeutic drug for traumatic neural disease (disorder) and/or motor function disorder derived from spinal cord injury. A keratan sulfate oligosaccharide or a derivative thereof was found to have an effect of improving the traumatic neural disease (disorder) and/or motor function disorder derived from spinal cord injury and to be useful as the therapeutic drug for traumatic neural disease (disorder) and/or motor function disorder. That is, according to the present invention, there is provided a therapeutic drug for traumatic neural disease (disorder) and/or motor function disorder comprising an effective amount of the keratan sulfate oligosaccharide or the derivative thereof.

Abstract: A pharmaceutical composition containing hyaluronan as an active ingredient is provided. A preferred hyaluronan is a tetrasaccharide (HA4) containing 2 units, with a single unit being -D-glucuronic acid-?-1,3-D-N-acetylglucosamine-?-1,4-.

Abstract: The present invention provides a therapeutic agent for nerve damages such as those caused by spinal cord injury or nerve trauma, which comprises, as an active ingredient, a low-molecular-weight saccharide composed of at least glucuronic acid and/or N-acetylglucosamine or a pharmaceutically acceptable salt thereof. The present invention also provides a therapeutic agent for nerve damages which comprises, as an active ingredient, preferably a low-molecular-weight hyaluronic acid, more preferably hyaluronic acid disaccharide to hyaluronic acid 2,500-saccharide, further more preferably hyaluronic acid disaccharide to hyaluronic acid 50-saccharide, much more preferably hyaluronic acid tetrasaccharide, or a pharmaceutically acceptable salt thereof.

Abstract: A car-mounted bicycle or wheelchair carrier that enables a bicycle to be easily and quickly loaded and unloaded, that can be completely stored in the trunk in a compact fashion when it is not being used and be removed from the trunk in a one-step operation, that can be easily mounted to any existing cars, that can reliably immobilize a bicycle or wheelchair when the car is being driven, that can be applied to various types of bicycles as well as to wheelchairs, and that can be manufactured at low cost.

Abstract: A limiter plug and a drain plug are juxtaposed in a valve block. The limiter plug is provided with a thermo-switch of which operation, when a predetermined temperature is reached, opens a communication passage for drainage by means of a limiter pin. The drain plug is provided with a drain pin for draining a high-pressure oil in conjunction with the drainage action of the limit pin induced by the thermo-switch so that, when the predetermined temperature is reached, it substantially nullifies the torque for switching from 4 wheel-drive to 2 wheel-drive. In the status of no operation of the thermo-switch, the drain pin when a predetermined torque is reached, gradually opens the drain hole while catching a balance, to limit the torque to a predetermined value.

Abstract: A valve block coupled to a rotor is provided with a drain mechanism that includes a drain pin adapted to open and close a drain hole. The drain pin is incorporated in a drain plug by providing a support by a return spring. The drain pin has an orifice for generating a flow resistance. One end turn portion of the return spring is press fitted into the interior of the drain pin having the orifice, while the other end turn portion of the return spring is press fitted into the interior of a limiter plug having a limiter pin, whereby the drain pin is rotationally positioned to alleviate cavitation noises.

Abstract: A torque varying mechanism comprises an accommodation hole that has a relief hole formed in its bottom and that receives a check ball therein. The accommodation hole is configured so as to present a relationship in which the area of flow passage between the accommodation hole and the check ball increases linearly as a function of the amount of displacement of the check ball after opening of the relief hole, after which the flow passage area keeps a unvarying value. A hysteresis characteristic is imposed on a switching point where switching is made between a high torque transmission characteristic and a low torque transmission characteristic relative to an increase and a decrease of the vehicle velocity.

Abstract: A joint includes therein a valve serving to cut off torque transmitted from a front wheel associated driving shaft to a rear wheel associated driven shaft by the action of a weight based on a centrifugal force when a predetermined number of rotations is reached. The valve is coupled to a rotor or a housing connected to the driven shaft so that the rotations of the valves are in synchronism with rotations of the driven shaft. For this reason, the number of rotations of the valve is determined by the number of rotations of the rear wheel associated with the driven shaft, allowing the torque to be cut off depending on the vehicle velocity.

Abstract: A drain plug is disposed in a drain hole through which oil is discharged from a high-pressure chamber formed in a valve block. Within the drain plug there is arranged a drain pin that slidably opens and closes the drain hole. A fixed pin serves to restrict a displacement of the drain pin. A thermo-switch is located within a low-pressure chamber behind the drain pin in such a manner as to be urged by a return spring so that the drain pin is pressed to keep the drain hole closed. When a predetermined temperature is reached, the thermo-switch allows its head pin to extend, with the reaction force as a result of abutment of the head pin against the fixed pin causing the thermo-switch to retreat to release the pressing force exerted on the drain pin. In consequence, the drain pin is displaced by a high pressure toward the direction in which the drain hole is opened, allowing high-pressure oil to be drained into the low pressure side.

Abstract: An axially extending extension is formed on a bearing retainer provided adjacent to a valve block of a joint and press-fitted into the interior of a housing. The extension has at its outer peripheral end a bearing by way of which the bearing retainer is rotatably supported by a differential gear case located outside thereof. This allows moment arising from rotational secondary torque received by the housing to be transmitted from the bearing retainer extension via the bearing to the outside differential gear case, thereby preventing the moment from acting on a main shaft which is a centrally located output shaft.

Abstract: A torque characteristic shifting mechanism is provided in an accommodation hole of a rotary valve. The torque characteristic shifting mechanism changes over the torque characteristics in a multi-step manner with an increase of the vehicle velocity by setting the distances so as to meet the relationships R3≈R2>R1 or R2>R3>R1 where R1, R2 and R3 are the distance from a center of rotation of a weight member accommodated rockably around the center of rotation to a center of the ball blocking the drain hole, the distance from the center of rotation to a center of gravity of the weight member and the distance from the center of rotation to a center of a spring, respectively.

Abstract: A plunger is accommodated in each of a plurality of plunger chambers formed axially in a rotor, with the plunger being displaced by rotation of a cam face associated with a housing. A first one way valve for intake is incorporated in the head of each plunger and a second one way valve for discharge is disposed within in a discharge hole leading to the plunger chambers. The intake stroke of the plunger caused by rotation of the cam opens the first one way valve to suck oil from a low pressure chamber into the plunger chamber. The discharge stroke of the plunger opens the second one way valve to allow the discharged oil to flow through the orifice into the low pressure chamber, whereby a torque corresponding to the relative rotational-speed difference is transmitted from the housing side to the rotor side.

Abstract: A hydraulic power transmission joint provided with a rotary valve in which a first enclosing hole is bored and moreover, a first spool valve, a first spring, a first pin member and a first communicating hole are provided. Further, a second communicating hole is also provided therein in such a manner as to be coaxial with the first communication hole. Moreover, a second enclosing hole having a smaller diameter is bored therein. Furthermore, a second spool valve having a diameter smaller than that of the first spool valve, a second spring, a second pin member, a third communicating hole, a fourth communicating hole and an orifice are provided therein. Further, a valve element, whose position is controlled, is enclosed in a high-pressure chamber formed in the rotary valve.

Abstract: A hydraulic power transmission joint provided with a rotary valve in which a first enclosing hole is bored and moreover, a first spool valve, a first spring, a first pin member and a first communicating hole are provided. Further, a second communicating hole is also provided therein in such a manner as to be coaxial with the first communication hole. Moreover, a second enclosing hole having a smaller diameter is bored therein. Furthermore, a second spool valve having a diameter smaller than that of the first spool valve, a second spring, a second pin member, a third communicating hole, a fourth communicating hole and an orifice are provided therein. Further, a valve element, whose position is controlled, is enclosed in a high-pressure chamber formed in the rotary valve.

Abstract: A hydraulic power transmission joint provided with a rotary valve in which a first enclosing hole is bored and moreover, a first spool valve, a first spring, a first pin member and a first communicating hole are provided. Further, a second communicating hole is also provided therein in such a manner as to be coaxial with the first communication hole. Moreover, a second enclosing hole having a smaller diameter is bored therein. Furthermore, a second spool valve having a diameter smaller than that of the first spool valve, a second spring, a second pin member, a third communicating hole, a fourth communicating hole and an orifice are provided therein. Further, a valve element, whose position is controlled, is enclosed in a high-pressure chamber formed in the rotary valve.

Abstract: A rotational force which was input from a transmission is received by a main shaft and transferred to the rear wheel side. The rotational force of the main shaft is transferred to the front wheel side through a hydraulic clutch. The hydraulic clutch receives the supply of an operating hydraulic pressure from an oil pump which is driven by a DC motor. Further, an operating hydraulic pressure is supplied in parallel to the hydraulic clutch from a second oil pump which is driven by the main shaft. The DC motor is driven only in the low-speed mode, stop mode, and reverse mode. On the other hand, after the motor was turned on at a rotational speed of a predetermined rotational speed or less, if the speed does not reach a second rotational speed higher than the predetermined rotational speed, the motor is not turned off.