Abstract: A drive unit includes: an electric unit including a first electric motor for driving, a deceleration mechanism configured to transmit a rotation torque of the first electric motor to a drive wheel, a second electric motor configured to be driven by an internal combustion engine to generate electric power, and an acceleration mechanism configured to transmit a rotation torque of the internal combustion engine to the second electric motor. The first electric motor, the deceleration mechanism, the second electric motor, and the acceleration mechanism are housed in one housing.

Abstract: In order to utilize separately steel pipe and coating resin as recycling resources, resin-coated steel pipe, which is produced by adhering a thermo-plastic coating resin on the surface of steel pipe with an adhesive, is heated by high-frequency induction heating to at least the melting temperature of the coating resin, and the coating resin is scraped off while the inner layer thereof is in a melted condition and the outer layer is in a softened condition. Coating resin and steel pipe can be recovered without the composition thereof being damaged. The scraping of coating resin is complete and efficient and requires only minimal energy since it occurs when the inner layer of the coating resin is in a melted condition and the outer layer is in a softened condition.

Abstract: A high-density type cultivation equipment has an improved mechanism to transfer cultivation beds from one main rail track to the adjacent main rail track, in which transfer rail tracks 1 that connect ends of main rail tracks 3 consist of two pairs of parallel feed rollers 1' that are rotated in a common direction at an identical velocity, are arranged with a track gauge related to the distance between wheels which cross said main rail tracks with an angle declined from a right angle by a feed angle .alpha. at substantially the same height with said main rail tracks. The wheels 15 of cultivation beds B have the axles 15a thereof fixed in direction to be perpendicular to the central axes of the main rails. As means to drive said cultivation beds B along the main rail tracks 3 in a cyclic path, hook means 4 that detachably engage with structural members 10 of said cultivation beds B are provided to be driven in the direction parallel to the main rail tracks 3.

Abstract: A roll holder for holding rotatably a roll of consecutive thin-film-like products and paying out a succeeding product up to a given position as the preceding product is cut off along a break line provided between individual units of use, whose body has holding portions for holding rotatably the winding core of the roll of consecutive products to hang the same; a first feed roll to be rotated by a motor; and a detector for detecting the presence/absence of the succeeding product at a given position, whose lid has a second feed roll coming into abutment on the first feed roll when the lid is shut and locked by a lock mechanism with respect to the body, and whose control unit, after the detector detects the absence of the succeeding product, causes the motor to rotate the first feed roll to thereby pay out the succeeding product, and after the detector detects the presence of the succeeding product, causes the motor to rotate the first feed roll a certain amount of rotation to thereby pay out the succeeding prod