Abstract: A variable valve timing device includes a rotation shaft and a rotation transmitting member rotatably mounted thereon so as to define a pressure chamber between the shaft and the member. The pressure chamber is divided by a vane extending from the shaft into an advance angle space and a delay angle space. Differentiating pressures in both spaces establishes rotation of the shaft, which enables an adjustment of the phase angle between the shaft and the member. A retracting bore and a receiving bore are formed in the member and the shaft, respectively. A locking valve and a piston are fitted in the retracting bore and the receiving bore, respectively. A fluid passage is formed which extends to a boundary portion between the piston and the locking valve.

Abstract: A position transducer determines a current key position through variation of light intensity interrupted by a shutter plate attached to a key, and a semi-column shaped convex lens elongates the light beam radiated from an optical fiber in a direction parallel to the trajectory of the key so that the light beam fully covers the motion of the shutter plate.

Abstract: A position detecting device includes a ring gear that is disposed on an outer side of an output shaft of a motor and rotates with the rotation of the output shaft, fixed contact terminals fixed to a cover plate, and a rotary contact terminal provided on a ring gear. As the ring gear rotates, the fixed contact terminals and the rotary contact terminal are brought into contact with each other, thereby detecting a rotational position of the output shaft. The position detecting device further includes a clutch mechanism for preventing the rotation of the ring gear by more than a predetermined degree while permitting the rotation of the output shaft of the motor in the state of contact. Hence, even if the output shaft of the motor is rotated sufficiently, this state of contact is maintained.

Abstract: A vehicle seat equipped with a side air bag assembly the air bag of which is assembled within a side cavity formed in one side of a back rest of the vehicle seat in a folded condition. A rear attachment board is mounted on a support frame of the back rest, the rear attachment board having a back portion formed to cover the rear face of the back rest and a side portion formed to cover the air bag in the side cavity. The side portion of the rear attachment board is formed with an opening which is opposed to the air bag in the side cavity and closed by a door plate hinged at one side thereof to the rear attachment board at one side of the opening to be opened outwardly when a thrust force caused by inflation of the air bag is applied. The door plate is normally retained in a closed position by engagement with the other side of the opening.

Abstract: A liquid pump in which a perfect seal is achieved between a liquid and the atmosphere without the use of magnets includes a pump shaft rotatably supported inside housings and having an impeller secured thereto for impelling a liquid through the pump, a driven unit provided inside the housing for rotating the pump shaft, a driving unit coupled to external power, and a resilient member provided between the driven unit and the driving unit for effecting sealing liquid-tightly between the driven unit and the driving unit on the side of the impeller and transmitting force from the driving unit to the driven unit.

Abstract: A device for an adjustable chair, where the back of the chair, at a first mounting site on each side thereof, is pivotally connected to respective side members of the chair, and at a second mounting site forms a hinged connection with a rear part of the chair set frame, where the chair seat frame, at a front mounting site on each side thereof, is slidably connected to a respective side member along a front guide which forms a part of the side member. The first mounting site on the chair back is designed to slide along a rear, forward and downward inclining guide in the side member, and the seat frame has on each side a rear mounting site between said front mounting site and said second mounting site for the chair back, said rear mounting site forming a slidable connection with a guide in each respective side member, which is located between the front and rear guides when seen in the longitudinal direction of the side member which is either horizontal or inclines slightly forward and upward.

Abstract: A material and method is provided for lining man-entry sized pipes and securing the lining to the pipe. The lining comprises a unplasticized polyvinyl chloride panel including an interior channel through which grout may be injected. Upon the grout's curing, the grout provides strength and support for a second layer of grout injected into an annulus between the pipe's inner surface and an outer surface of the lining.

Abstract: A fuel-effusion prevention valve includes a first housing member having an evaporation passage, a first engaging portion and a first cylindrical portion, and a second housing member having a partition portion, a communicating passage, a second engaging portion and a second cylindrical portion. The first cylindrical portion is formed so as to extend axially from the first engaging portion, and its diameter is smaller than that of the second engaging portion. The second cylindrical portion is formed so as to extend axially from the second engaging portion. A floating valve is disposed in a chamber so as to be able to open and close the valve hole in response to its buoyancy due to fuel flowing into the second chamber through the communicating passage. The first cylindrical portion is fused with the second cylindrical portion. A circular seal member is fitted into an installation hole formed on the fuel tank and its inner hole is fitted onto the outer circumferential surface of the first cylindrical portion.

Abstract: An electromagnetic proportional pressure control valve includes a housing having at least one fluid inlet port and fluid outlet port and a passage for communicating between the ports. A spool is slidably accommodated in the housing for opening and closing the passage between both the ports. A plunger device is housed in the housing to define a pressure chamber, and includes a pilot valve. A return passage is arranged through the plunger device between the pressure chamber and the outlet port. The opening and closing of the return passage is controlled by the pilot valve. A restricting device restricts a fluid communicating between the inlet port and the pressure chamber. An electromagnetic device has an electromagnetic coil and a core of magnetic material to generate electromagnetic force for allowing the pilot valve to move so as to control the opening and closing of the return passage.

Abstract: An oil pump apparatus incorporates, an oil pump housing, and a rotor located in the oil pump housing, wherein the rotor forms a first set of pockets having a capacity increasing toward the rotating direction of the rotor and a second set of pockets having a capacity decreasing toward the rotating direction of the rotor. The apparatus further includes a plurality of suction ports connected with the first set of pockets, each of the suction ports being isolated from other adjacent suction ports, a discharge port connected with the second set of the pockets, and a control valve.

Abstract: A balancing machine for balancing a wheel, wherein the wheel is rotated by a drive device for measuring the unbalance, is provided with a speed control device for controlling the speed of the drive device. The speed control device includes a computer and a frequency converter. Further drive devices can be switched by a switch-over device.

Abstract: The invention relates to a method and apparatus for dynamic determination of the thickness and/or basis weight of moving material under test. The material under test is exposed to a focused ultrasound filed with high sound intensity, whereby the sound fraction coming from the material under test is detected directly in the near filed, i.e. at a distance smaller than or equal to the acoustic wavelength used, and evaluated for determining the thickness and/or basis weight. The near-field measurement preferably takes place with continuous sound and in transmission.

Abstract: In a power-brake system, a hydraulic pressure generated by means of a pump may be supplied, controllably in proportion to an actuation force via brake conduits, by a power-brake valve to individual brake cylinders. Control pressure conduits are connected to the brake cylinders or the brake conduits in the vicinity of the brake cylinders and these control pressure conduits are connected to the brake valve. The brake pressure at the brake cylinders may be fed back, via the control pressure conduits, as the control pressure for acting on the control end of the brake valve so that a control of the control plungers of the brake valve is carried out corresponding to the brake pressure build-up at the brake cylinders and, particularly when low brake pressures are desired, rapid pressure build-up times in the brake conduits are ensured.

Abstract: In a batting practice range where a pitching machine is installed to automatically pitch a ball toward a batter's box, hitting zones such as out zones, hit zones and home run zones are provided in front of the batter's box to detect a ball driven into either one of them from the batter's box for judging the ball as "Out", "Hit" or "Home run". An upright board is installed behind the batter's box and provided with a strike sensor for detecting vibration caused by a ball pitched by the pitching machine and struck the upright board and for judging the ball as "Strike". If a ball pitched by the pitching machine is not detected as any one of "Out", "Hit", "Home run" or "Strike" within a predetermined time, the ball is Judged as a foul ball.

Abstract: An apparatus for adjusting spacing between a pair of crawler tracks of a working vehicle such as a backhoe. This apparatus is capable of moving the crawler tracks independently of each other. When one of the crawler tracks is moved laterally outwardly of the vehicle, the other may be maintained in an inward position.

Abstract: A disk for holding, centrifuging and microscopically viewing fluid samples is provided. The disk includes a plurality of reaction wells radiating outwardly and includes a barrier to restrain particles during centrifugation. This disk is used in the disclosed apparatus and method for blood typing and related procedures. The apparatus comprises sample loading, mixing, centrifuging, incubating, viewing and sterilizing stations. Additionally, a photomicrograph of the sample is taken, digitized, displayed, stored and printed along with corresponding test results and interpretation.

Abstract: A seat lift mechanism in an automotive vehicle incorporates a swivel base mounted on a stationary base secured to a compartment floor of the vehicle for rotation about a vertical axis so as to be moved between a forward-facing position where the front side of the swivel base is oriented to the front of the vehicle, and a sideways position where the front side of the swivel base is opposed to a side door opening of the vehicle. A frame is supported on the swivel base for rotation therewith and a lift rack provided thereon with a passenger seat is mounted on the frame. The lift rack is connected to the frame by means of a link mechanism in such a manner that when the swivel base is retained in the sideways position, the lift rack and seat are movable from a first position on the frame to a second position close to the ground where the seating surface of the seat is maintained at an inclined angle.

Abstract: An auto-tensioner including a body having a cylindrical bore defined therein; a shaft having first and second ends, the first end of the shaft being slidably and rotatably engaged with the cylindrical bore of the body, the body including a mechanism for sealing the shaft in the cylindrical bore so as to be fluid-tight; a support arm having upper and lower ends, the lower end of the support arm being fixedly connected to the second end of the shaft; a pulley rotatably connected to the upper end of the support arm, the pulley being operatively engaged with a belt under tension; a mechanism for rotatively urging the shaft and the support arm whereby the support arm maintains a tension engagement between the pulley and the belt, the urging mechanism being operatively connected between the body and the shaft; and a mechanism for converting rotational movement of the shaft into axial movement thereof along the cylindrical bore, the converting mechanism operatively connected between the shaft and the body, wherein t

Abstract: A production system of electrolyzed water which includes a first brine tank arranged to store an amount of saturated brine, a second brine tank arranged to store an amount of diluted brine prepared by dilution of the saturated brine supplied from the first brine tank and an electrolyzer for electrolyzing the diluted brine supplied from the second brine tank. In the production system, an electric controller is adapted to maintain the level and concentration of diluted brine in the second brine tank and to correct the concentration of the diluted brine in accordance with a temperature of the diluted brine or pH of electrolyzed water produced in the electrolyzer.