Sanyo Machine Works, Ltd.

Kinya Mori

Hiroshi Hashimoto

A water heating apparatus comprising a refrigerant loop for natural circulation which includes a hot water storage tank for holding water to be heated, a heat collecting plate for collecting solar heat, and refrigerant tubes having a refrigerant sealed therein and extending to unite the hot water storage tank with the heat collecting plate and another refrigerant loop for refrigeration cycle which includes a compressor and an expansion valve which are connected in the refrigerant tube uniting the hot water storage tank with the heat collecting plate. The water in the hot water storage tank is elevated in temperature selectively by the natural circulation action where there is a sufficient amount of sunshine or by the refrigeration cycle where the amount of sunshine is insufficient.

Water heating apparatus

There are disclosed a method and device for tightening bolts, characterized by including drive means, detection means and control means whereby a bolt (or nut) is turned at high speed until it comes in contact with the tightening bearing surface of a member to be clamped (such as a plate), whereupon it is turned at low speed through a predetermined angle until it is stopped at a predetermined tightening completion position.

Device for tightening bolts

A method is provided for fastening bolts and like threaded fasteners wherein the bolt is rotated initially at a high rate of speed until it comes to a point in relation to the bearing surface of the member to be clamped not past the snug point of the bolt head to the bearing surface of a member to be clamped, such as, for example, a plate, whereupon the bolt is thereafter rotated at a low rate of speed of rotation through a predetermined angle until it is stopped at a predetermined tightening completion position.

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Nishikasugai, Japan

Kinya Mori