Abstract: A shock absorber according to the present invention for use in a vehicle for cushioning a vibration generating between a vehicle body and an axle, in which a suspension spring is disposed between one member which may serve as a mass below the spring and the other member which may serve as a mass above the spring, has an apparatus for adjusting the height of vehicle permits its mounting length to be adjusted without changing an initially set load of the suspension spring while being relatively displaced with respect to the one member so that a stroke of the shock absorber may be changed.

Abstract: A suspension for supporting a wheel on a vehicle body includes a hollow shaft fixed to the vehicle body, an arm having one end coupled to the wheel and an opposite end pivotally supported on an outer peripheral surface of the hollow shaft, a rotary damper interposed between the hollow shaft and the arm, for dampening swinging movement of the arm with respect to the hollow shaft, and a torsion bar extending through the hollow shaft and having one end fixed to the vehicle body and an opposite end coupled to the opposite end of the arm for angular movement in unison with the arm.

Abstract: A hydraulic damper has an oil lock mechanism for preventing bottoming when the hydraulic damper is fully compressed. The hydraulic damper also includes an outer tube, an inner tube, a cylinder movable with the inner tube, a piston rod movable with the outer tube, a piston fixed to a distal end of the piston rod, and a coil spring disposed in the inner tube. The oil lock mechanism comprises an oil lock piece mounted on an upper end of the cylinder, and an oil lock tube disposed concentrically between the cylinder and the inner tube and having a larger-diameter portion which can be spaced from the oil lock piece when the hydraulic damper is extended and a smaller-diameter portion which can be held in sliding contact with the oil lock piece when the hydraulic damper is compressed.

Abstract: Apparatus for manufacturing a trapezoidally-shaped paper bag comprises a cutting and processing device to form a continuous line of blanks in a paper strip, left and right guide rail units for raising up the side flaps of successive blanks, left and right folding ruler members arranged in an inverted V in the direction of advance of the paper strip, a base rod for causing forward and backward reciprocating movement of the left and right ruler members on the upper surface of the blank being processed between the guide rail units, and inwardly and outwardly reciprocating left and right sliding plates for folding up the side folding flaps of the blank by moving inwardly over the left and right ruler members, respectively, in an overlapping relation.

Abstract: For better handling and improved riding comfort of a vehicle, there is provided a compound suspension system comprising a plurality of hydraulic shock absorbers each having a front chamber and a back chamber defined in front of and behind a piston member, respectively, received in a cylinder member, and a valve structure provided in each of the shock absorbers for selectively communicating the chambers to a conduit which is common to at least one other shock absorber, wherein: the valve structure comprises a valve element provided with a first part for varying a degree of communication between the front chamber and the common conduit and a second part for varying a degree of communication between the front chamber and the back chamber.

Abstract: A hydraulic damper includes a cylinder filled with working oil, a piston rod extending axially in the cylinder, and a piston slidably disposed in the cylinder and fixed to the piston rod, the piston having an oil passage defined therein. A valve structure in the hydraulic damper has a spacer disposed around the piston rod and on one surface of the piston, a leaf valve disposed around the spacer for normally closing an end of the oil passage at the piston surface, and a restriction plate disposed around the piston rod and mounted on the spacer and the leaf valve for allowing the leaf valve to open the end of the oil passage only during one of compression and expansion strokes of the piston with respect to the cylinder.

Abstract: A one-way damping valve mechanism in a hydraulic damper having a first hydraulic chamber defined in a cylinder, and a piston rod having an inner end on which there is mounted a piston slidably fitted in the cylinder, divides the first hydraulic chamber into a second hydraulic chamber and a third hydraulic chamber. The valve mechansim produces a damping force when the piston is moved in a prescribed direction to move working oil from the second hydraulic chamber into the third hydraulic chamber. The valve mechanism comprises a subvalve for defining a first hydraulic passage to generate a damping force when the piston moves at an extremely low speed in the prescribed direction, and a main valve for defining a second hydraulic passage to generate a damping force when the piston moves in a medium/high speed range in the prescribed direction.

Abstract: A vehicle leveling system employing pneumatic leveling units has a valve unit and a control device therefor for supplying a gas pressure from a gas pressure generator unit to and discharging it from the pneumatic leveling units. The control device comprises switches and a pressure sensor for detecting the gas pressure in the pneumatic leveling units and issuing a signal indicating the detected gas pressure, the control device including a central processing unit. The control device is operable in response to commands applied by the switches and the output signal from the pressure sensor, and has various control modes.

Abstract: A corrosion-resistant electric motor casing comprises a substantially cylindrical yoke and barrel, and a pair of brackets fixed to and closing the axially opposite ends of the yoke and barrel. The yoke and barrel comprises a first member substantially in the form of a hollow cylinder made of a material which is sufficiently ferromagnetic to serve as a motor yoke, and a second member in the form of a pipe of aluminmum fitted over the first member and covering the outer peripheral surface thereof. The motor casing is made highly resistant to corrosion without involving an increase in the weight and cost thereof.

Abstract: A self-leveling damper for motorcycles including a cylinder filled with hydraulic oil. A piston is slidably fitted in the cylinder. A hollowed piston rod is fitted at the lower end in the piston and projected at the upper end from the cylinder. The piston rod has a first oil path communicatable with the inside of the cylinder. A hollowed inner rod planted is fixed at the lower end on the bottom part of the cylinder and extends at the upper end in the first oil path of the piston rod. The inner rod has a second oil path communicatable with the inside of the cylinder. An upper bracket is secured to the upper end of the piston rod. A first spring seat is slidable relative to at least either the upper bracket or the cylinder. A second spring seat is secured to the other of them. A coil spring is stretched between the first and second spring seats. A hydraulic chamber is partially defined by the first spring seat.

Abstract: A remote operation type damping force control mechanism for a hydraulic damper including a cylinder, a piston, and a hollow piston rod having therein an oil path interconnecting a pair of chambers separated from each other by the piston in the cylinder. The mechanism comprises an adjustment rod rotatably inserted in the hollow piston rod and provided at the inner end thereof with an orifice plate having a plurality of orifices of different diameters, a remote operation part provided with an operation member, a control cable operatively integrally connected with the operation member and lead out of the remote operation part, and a driving mechanism interposed between the control cable and the adjustment rod for driving to rotate the adjust rod in accordance with the rotation of the operation member of the remote operation part.

Abstract: A spring load adjusting device for cushioning equipment including a pressure chamber which hydraulically controls a spring load of a coil spring.A hydraulic cylinder is hydraulically connected to the pressure chamber, a piston is slidably fitted in the cylinder, an adjust screw is provided for sliding the piston, and a protection member is provided for protecting a threaded portion of the adjust screw.The threaded portion of the adjust screw is protected from exposure to the outside and is thus protected from dust and the like, while the appearance is improved.

Abstract: A damping force generating device for an oil damper including a hydraulic cylinder, a sub-tank having in the interior thereof an oil chamber and a gas chamber, and a first oil passage which hydraulically connects the hydraulic cylinder to the oil chamber. The damping force generating device comprises a valve seat having second and third oil passages for passing therethrough an operating oil when it is flowing in first and second directions of the first oil passage, respectively; a first valve for opening and closing the second oil passage; and a second valve for opening and closing the third oil passage. The first or second valve comprises a valve body, a mechanism for normally urging the valve body in a closing direction, and an urging force adjusting arrangement for adjusting the urging force of the urging mechanism from the exterior. The damping force generating device is simplified in structure and provides for a reduction in size of the oil damper as well as facilitated adjustment of the damping force.

Abstract: A heat releasing device comprising a base plate integrally formed with a multiplicity of tongue-like raised fins on at least one side thereof by skiving, each of the skived fins being divided at least at its forward end into a plurality of portions by slits.

Abstract: A vehicle body suspension system comprising a piston-cylinder assembly provided between a vehicle wheel and a vehicle body. The piston, which is disposed within the cylinder connected to the wheel, and the piston rod coupled to the piston, are each formed with an oil channel extending axially therethrough. The end of the piston rod which is remote from the piston is connected to the vehicle body by means of an annular elastic member arranged around such end of the piston rod. An oil chamber having a variable volume is provided, and has part of its peripheral wall formed by part of the elastic member. A first damper arrangement is provided between the oil chamber and the oil channel for action during contraction of the system, and a second damper arrangement is provided in the piston for action during elongation of the system. An auxiliary vehicle body suspension spring is provided between the cylinder and the piston rod.