Abstract: A rotor of an inner rotor type motor includes: a circular plate portion rotatably supported about an axis; an eccentric portion provided in the circular plate portion and eccentric with respect to the axis; a peripheral wall portion extending from an outer edge of the circular plate portion; and a permanent magnet held on the peripheral wall portion, wherein a circular plate portion includes a hole portion located radially outward from the eccentric portion, and the peripheral wall portion includes a protruding portion protruding radially inward and being located in a side opposite to the hole portion with respect to the eccentric portion.

Abstract: A piston drive device includes: a motor; an eccentric body provided at an eccentric position with respect to a rotation axis of the motor and revolving about the rotation axis in conjunction with rotation of the motor; a piston holder swinging about the rotation axis in conjunction with revolving of the eccentric body; and pistons held by the piston holder in such a manner as to be positioned radially about an eccentric axis of the eccentric body, wherein the pistons are arranged in a same plane perpendicular to the eccentric axis.

Abstract: A molten salt bath includes at least one kind selected from the group consisting of chlorine, bromine, and iodine, zinc, at least two kinds of alkali metals; and fluorine. Here, the molten salt bath may include oxygen. Furthermore, the molten salt bath may include at least one kind selected from the group consisting of tungsten, chromium, molybdenum, tantalum, titanium, zirconium, vanadium, hafnium, and niobium. Additionally provided are a deposit obtained using the aforementioned molten salt bath, a method of manufacturing a metal product using the aforementioned molten salt bath, and a metal product.

Abstract: In a gas burner ignition device for a gas-operated refrigerator, the ignition electrode of a high voltage generating unit and the flame detecting rod of a flame detector are formed into one unit to miniaturize the device. The device comprises timer means which when the flame detector or the high voltage generating unit is out of order, operates to suspend the supply of gas to the gas burner.