Abstract: The electric dust collector has an oblong holding unit provided on the air channel of an air conditioner or the like; a high-voltage applying device provided at an end of the holding unit; a front-open contact protector of substantially inverted U-shape that contains a high-voltage power feeding terminal connected to the high-voltage applying device; a filter unit attached to the holding unit; and a slide projection provided on the filter unit. The slide projection has a high-voltage power receiving terminal removably fitted into the contact protector, allowing the filter unit to be removably attached to the holding unit. The high-voltage power feeding terminal covered with the contact protector is free from dust collection. The structure can prevent contact failure or electrical leak.

Abstract: A method of switching between a sequential control mode and other operation modes by mapping beforehand corresponding operating states with respect to operation tables provided for the different control modes of operation. When an operating state in the sequential control mode, in which a sequential control for plural operation processes on the basis of an SFC (Sequential Function Chart) is performed using programmable sequential controller, is switched to an operating state in a manual control mode or in an inching control mode, the corresponding operating state in the operation table is carried out immediately for the manual or inching mode of operation.

Abstract: A vacuum forming process, and an apparatus for carrying out the same, for imparting a predetermined shape to a sheet material. The process includes the steps of placing a thermally softened sheet material onto a molding surface of a mold and evacuating air remaining between the molding surface of the mold and the sheet material, thereby bringing the sheet material into a close contact with the molding surface of the surface of the mold. The vacuum forming process and apparatus is adapted for giving a predetermined shape to a sheet material having a low elongation ratio.

Abstract: In a transfer apparatus in which a pallet is stationary when the crossing angle between the axes of rotation of a driven roller and a driving shaft is zero, and the pallet may be driven when the angle is greater than zero, a stop-start apparatus comprising a cam follower roller supported by a support member of said driven roller, a stopper block guided and supported at a stop position of the pallet so as to move to and fro in the directions of the transfer and having a notch into which said cam follower roller fits so as to keep said angle zero, a cam the proximal end of which is pivotally supported at a forward position of said stop position having a cam surface on which said cam follower roller makes a rolling contact, a spring urging said cam to a predetermined position, the distal end of said cam, in said predetermined position, being near said notch and said cam being so shaped as to increase said angle from zero to 45 degrees from said distal end toward the proximal end.

Abstract: A resin molding apparatus which can produce a molded resin article having neither a runner nor a gate portion thereon. The resin molding apparatus comprises a pouring pot including a pot having a heating member provided therein, and a piston member disposed for up and down movement within the pot and having a lifted position in which the piston member defines part of a mold cavity. Since the appratus has no runner or gate portion therein, the necessity of a high injecting force to be applied to a metal mold and hence of a high mold clamping force can be eliminated and the overall size of the apparatus can be reduced.

Abstract: A method and apparatus for automatically attaching clips to a weather strip for an automobile. The clip attaching apparatus comprises a guide rail for supporting an elogated weather strip with a plurality of clip holes arranged in the axial direction thereof and guiding said weather strip in the axial direction thereof, a transport means for causing said weather strip to move and stop along said guide rail, a hole detection means disposed along said guide rail for detection a hole of the weather strip, a clip insertion means for inserting a clip into a hole of said weather strip, and a control unit for controlling the operation of the various means. Thus the operations for attaching clips can be completely automated.