Abstract: This invention relates to an apparatus for automatically attaching and detaching such exterior parts as doors, a trunk, and a bonnet, etc. which are openably mounted to a vehicle body by way of such tightening device as pins, bolts, etc. on the assembling line of a vehicle. In a door attaching and detaching apparatus the position of pins for openably attaching a door on a vehicle body is detected by a pin position detection mechanism, and the position of the pin drawing out and inserting mechanism is compensated according to the position thereof. Then, the pins can be drawn out from and inserted in the vehicle body and the door by the corresponding pin drawing out and inserting mechanism. Furthermore, the position of the door holding mechanism is compensated according to the position of the pins detected by the pin position detection mechanism, thereby causing the door to be held by the corresponding door holding mechanism.

Abstract: An automotive body and body panels such as an engine hood, a trunk lid, and doors are assembled together along an assembling line. The automotive body with the body panels removably installed thereon and a feed jig on which the body panels can removably be installed thereon, are alternately fed along a first feed path. Then, the body panels are removed from the automotive body while they are being fed along the first feed path and the body panels are installed on the feed jig which is fed upstream of the automotive body along the first feed path. The automotive body from which the body panels have been removed and the body panels which have been installed on the feed jig are thereafter coated. Thereafter, the coated automotive body and the coated body panels are fed along a second feed path. The body panels are removed from the feed jig while they are being fed along the second feed path and the removed body panels are installed on the automotive body which is also fed along the second feed path.

Abstract: An automotive body delivered in a direction, and covers such as an engine hood and a trunk lid and doors of the automotive body are opened and held in an open position. Thereafter, prescribed areas of the automotive body are coated, and those doors which are located downstream with respect to the direction in which the automotive body is delivered and those areas of the automotive body which correspond to those doors which are located upstream with respect to the same direction, are coated. Thereafter, the covers and the doors of the automotive body are closed.

Abstract: A suture comprising a core of at least one synthetic fiber filament yarns, and a covering layer formed of a plurality of silk strands and sheathing the core, the core and the covering layer having substantially the same elongation at break. The filament yarns have increased modulus of elasticity and increased breaking strength to thereby give the suture improved breaking strength and also have enhanced rigidity to render the suture highly amenable to the correction of its deformation and easier to handle.

Abstract: In the first embodiment of this invention, an inner panel portion of a front door region of a vehicle body and an inner panel portion of a rear door region of a vehicle body on each side of a 4-door type vehicle are painted respectively by a pair of front and rear painting robots located on side portions of a painting stage. In the second embodiment, an inner panel portion of the door region of a vehicle body on each side of a 2-door type vehicle is painted by dividing into halves the area to be painted by the front and rear painting robots on each side of the vehicle.

Abstract: A welding torch is disclosed in combination with an industrial robot, the industrial robot having an arm and a wrist at one end thereof, the wrist including a rotary casing having a rotary shaft extending in a direction along the axis of the arm and a pair of sprocket members disposed on the sides of the rotary shaft. The torch and robot further have a first central core wire guide within the rotary shaft and extending along the axis thereof, and a second central core wire guide within the welding torch and fixed to the rotary shaft, the second central core wire guide being aligned with and in communication with the first central core wire guide.

Abstract: An instrument panel manufacturing system including a press forming device for the unit sheet and the core member having a feeding device and a heating device therefor.The feeding device (2) is provided with a suction device (20) for the unit sheet which is movable up and down, and the running rails (14) for the conveying bogie (21) are arranged between the sheet mounting position for the bogie and the conveying position so as to be movable up and down. The heating unit (3) is provided with lower rails (47) and upper rails (46) and includes a heater (48), and further a drying and melting device (101) having a drying chamber (102) and a melting chamber for the adhesive (65a) coated on the surface of the core member (65) is integrally arranged with the heating device (3).

Abstract: A memory device operable with high speed and with low power consumption is provided. The device is provided with a plurality of memory cells, a plurality of digit lines, a plurality of variable load elements arranged between the digit lines and a predetermined potential source. The device includes control means for making the conductance of the load element larger during a transition period from a write cycle to a read cycle than it is in the write cycle and in the read cycle.

Abstract: A hydraulic apparatus for changing flow rate by displacing the flow rate changing member of a variable displacement hydraulic pump accommodated in a casing for eliminating any surplus and leaked oil and diminished kinetic energy loss comprises an actuator, a flow rate control valve, a resilient member accommodated in the casing to urge the flow rate changing member toward the direction where the flow rate of the hydraulic pump is increased, first and second sliding members slidably received in first and second cylinder chambers, respectively, provided in the casing to urge the flow rate changing member toward the direction where the flow rate of the hydraulic pump is decreased, a first fluid conduit having one end connected with an outward port of the hydraulic pump and the other end connected with a rear port of the actuator, a second fluid conduit having one end connected with a fore port of the actuator and the other end connected with an inlet port of the hydraulic pump through the flow rate control valve

Abstract: In a method for producing a plastic foam of a desired expanded dimension which is constituted by extruding a melt of a thermoplastic synthetic resin containing a blowing agent through a die of an extruder and passing the extrudate through a shaping device located outwardly of the extruder and secured to the discharge end of the extruder while expanding and solidifying the molten mass so that it fills the shaping device; the improvement wherein at least a part of that area of the inside surface of the shaping device with which the expanded resin makes contact is formed of a plate of a fluorocarbon resin, said plate being secured to the inside surface of the shaping device by fitting portions, said fitting portions having a sufficient space for absorbing an increase in the volume of the fluorocarbon resin plate at the temperature of extrusion molding; and an apparatus for use in the above described process.

Abstract: A foamed polystyrene board useful as a thermal insulating material is produced by melting a polystyrene having a melt index of from 0.5 to 5 under heat in an extruder, mixing the molten mass with a blowing agent composed of methyl chloride and dichlorodifluoromethane, and extruding the resulting foamable molten gel from the extruder. As a novel essential feature, a flowability improver having a melting point higher than 70.degree. C., such as an aromatic sulfonamide, a brominated aromatic compound, a brominated alicyclic compound or a poly(.alpha.-methylstyrene), is mixed with the polystyrene within the extruder to impart superior extrusion formability. The foam has good dimensional stability both at room temperature and higher temperature, high mechanical strength and superior thermal insulation properties.

Abstract: A fail-safe fluid control valve comprises a first sleeve accommodated in and fixed to a valve housing, a second sleeve slidably received in the first sleeve, and a valve spool slidably received in the second sleeve. The first and second sleeves are properly formed with grooves and ports while the valve spool is properly formed with spaced large diameter portions. When there occurs such an abnormal condition that the valve spool is jammed or stuck to the second sleeve, the second sleeve is axially moved in unison with the valve spool by an input lever for actuating the fail-safe control valve under the same condition as a normal condition in which the valve spool is axially moved by the input lever.