Abstract: A pressure gas container includes a liner to store a gas, a reinforcing layer provided on an outer side of the liner, a boss attached to the liner, and an attachment attached to an outer surface of the liner. The boss has an opening through which the gas is introduced into the liner and through which the gas inside the liner is released. The attachment is to support the liner rotatably when the reinforcing layer is provided. At least one of the boss and the attachment has a gas release channel that allows communication between a gap formed between the outer side and an inner side of the reinforcing layer and a space outside the pressure gas container to release the gas having permeated through the liner and present in the gap between the liner and the reinforcing layer to the space.

Abstract: An edge has an inner circumferential portion connected to an outer circumferential portion of a diaphragm, and is made of an annular elastic deformation member. A frame is connected to an outer circumferential portion of the edge, and supports the diaphragm through the edge. A magnetic circuit displaces the diaphragm in a first direction that is a sound emission direction and in a second direction that is an opposite direction to the sound emission direction, and vibrates the diaphragm. In a region between the inner circumferential portion and outer circumferential portion of the edge, the edge includes a rib, which is protruded in the second direction, and limits a stroke of the diaphragm in the second direction.

Abstract: A pressure gas container includes a liner to store a gas, a reinforcing layer provided on an outer side of the liner, a boss attached to the liner, and an attachment attached to an outer surface of the liner. The boss has an opening through which the gas is introduced into the liner and through which the gas inside the liner is released. The attachment is to support the liner rotatably when the reinforcing layer is provided. At least one of the boss and the attachment has a gas release channel that allows communication between a gap formed between the outer side and an inner side of the reinforcing layer and a space outside the pressure gas container to release the gas having permeated through the liner and present in the gap between the liner and the reinforcing layer to the space.

Abstract: For certainly handling a screw member, a screw member 1 includes a male screw 2, and an inner peripheral face of the hole 4 has an engaging recessed part 5 to be engaged with an engaging projected part 11 of a tapered engaging part 10 of a rotary tool 9, and a stepped part 6, said inner peripheral face is parallel or make close to a center axis 7 of the screw member 1 from the head part 3 in a direction of the male screw and from the stepped part 6 in the direction of the male screw, and head part side end edge 8a and an end edge of the stepped part 8b to be engaged with the engaging projected part 11 have an angle of said inner peripheral face being 90±5 degrees with respect to the head part 3 and the stepped part 6.

Abstract: In order to reduce the number of structural components, the size and the cost of an electrolyzed water producing apparatus, an electrolyzed water producing apparatus is equipped with a system in which the start and stop of the operation of an electrolyzer cell in the apparatus is controlled in accordance with the open/close operation of a water feed valve interposed in a raw water feed conduit for feeding raw water to the electrolyzer cell.

Abstract: For easy washing and sterilizing of a holding tray for drill bits used in a dental implant operation, a holding tray X includes a tray main body 1 made of a hard material capable of autoclave sterilizing and holding members 2 made of an elastic material capable of autoclave sterilizing, the tray main body 1 includes holding plates 1b and holding member supporting plates 1c on a back surface of a substrate part 1a having rows of linearly aligned through holes 1aa for drill bits, the holding plates 1b include half circular cylindrical recessed parts 1ba at portions corresponding to the through holes 1aa, the supporting plates 1c have a fixed interval to a plane 1bb along the recessed part 1ba, and the holding members 2 are detachably held between the holding plates 1b and the supporting plates 1c to hold the drill bits together with the recessed parts 1ba.

Abstract: For easy washing and sterilizing of a holding tray for drill bits used in a dental implant operation, a holding tray X includes a tray main body 1 made of a hard material capable of autoclave sterilizing and holding members 2 made of an elastic material capable of autoclave sterilizing, the tray main body 1 includes holding plates 1b and holding member supporting plates 1c on a back surface of a substrate part 1a having rows of linearly aligned through holes 1aa for drill bits, the holding plates 1b include half circular cylindrical recessed parts 1ba at portions corresponding to the through holes 1aa, the supporting plates 1c have a fixed interval to a plane 1bb along the recessed part 1ba, and the holding members 2 are detachably held between the holding plates 1b and the supporting plates 1c to hold the drill bits together with the recessed parts 1ba.

Abstract: For certainly handling a screw member, a screw member 1 includes a male screw 2, and an inner peripheral face of the hole 4 has an engaging recessed part 5 to be engaged with an engaging projected part 11 of a tapered engaging part 10 of a rotary tool 9, and a stepped part 6, said inner peripheral face is parallel or make close to a center axis 7 of the screw member 1 from the head part 3 in a direction of the male screw and from the stepped part 6 in the direction of the male screw, and head part side end edge 8a and an end edge of the stepped part 8b to be engaged with the engaging projected part 11 have an angle of said inner peripheral face being 90±5 degrees with respect to the head part 3 and the stepped part 6.

Abstract: A rod constituting a suspending rod is automatically connected or detached, and a rod is easily conveyed between a position where the rod is delivered to rod attaching/detaching means and a position where the rod is contained. A plurality of jacks are operated in synchronism. In the upper part of a boiler-side steel structure (58) is provided a boiler jack (60) for moving a boiler module (56) up and down via a suspending rod (52). Above the boiler jack is provided a device (68) for automatically attaching/detaching a rod. The device (68) is movable horizontally. The rod attaching/detaching device (68) grips a rod (52S) at the end of the suspending rod pushed up by the boiler jack, rotates it to remove, and transfer it to a rod conveyor device (70). Upon receiving the rod from the rod attaching/detaching device, the rod conveyor device conveys it ro a rod container (54) provided on a working floor (42).