Abstract: The object of this invention is to provide a comparatively small freezing device capable of freezing supercooled water instantly at any desired time and place even though the water is at a poorly supercooled state which is resistive to freezing, by actively resolving the supercooled state. The object is achieved by providing a freezing device comprising a cylinder 1 to receive supercooled water, at least one piston 2, 3 to fit liquid-tight to the cylinder to move therein, which, by moving through the cylinder, introduces supercooled water into the cylinder, gives a mechanical impact to the supercooled water enclosed in the cylinder, and expels water in which the supercooled state has been resolved in the presence of impact, out of the cylinder, and a water inlet 1a and outlet 1b to be connected to at least one of the cylinder and piston in such a way as to allow their opening and closing.

Abstract: A thermally-actuated steam trap comprises a valve casing having an inlet, a valve chest and an outlet. A valve seat member with a discharge passage is disposed between the valve chest and the outlet. A temperature control element with an expansible medium sealed therein is disposed within the valve chest, and consists of two disk-shaped wall members, at least one wave-like diaphragm member provided between the wall members, and a valve member secured to the diaphragm member. Displacement of the diaphragm accompanying the expansion and contraction of the expansible medium causes the valve member to come into and out of a seating engagement with the valve seat member to close and open the discharge passage. In order to avoid a state of producing a permanent deformation of the diaphragm of low elastic material and not to be affected by repeated use of the diaphragm, the upper surface of the lower disk-shaped wall member has a curved region corresponding to the wave form of the diaphragm member.

Abstract: The present invention is concerned with an improved automatic, direction drive damper device constructed for installation over the terminal openings of furnace duct boots residing within room registers, said device being used as a part of a forced air heating/cooling system for the purpose of controlling and regulating the flow of the heating/cooling medium passing into individual rooms from furnace duct. Direct drive damper means include damper housing with rotatable damper plate, said plate having an integral shaft attached directly and removably to drive shaft of motor means, said damper plate being rotatable between open and closed positions by direct drive motor means when said motor means respond to commands of room thermostat.