Abstract: A spring device having an inside-end wheel that moves in conjunction with the inside end of a mainspring; an outside-end wheel that moves in conjunction with the outside end of the mainspring; a torque return unit that transfers part of the output torque of the mainspring from one to the other of the inside-end wheel and outside-end wheel; a duration time indicating unit that operates in conjunction with both the inside-end wheel and outside-end wheel and indicates the number of winds in the mainspring; and a torque transfer clutch unit that disengages torque transfer between the inside-end wheel and outside-end wheel by means of the torque return unit when the mainspring unwinds and the duration time indicating unit indicates a predetermined reference number of winds.

Abstract: A spring device having an inside-end wheel that moves in conjunction with the inside end of a mainspring; an outside-end wheel that moves in conjunction with the outside end of the mainspring; a torque return unit that transfers part of the output torque of the mainspring from one to the other of the inside-end wheel and outside-end wheel; a duration time indicating unit that operates in conjunction with both the inside-end wheel and outside-end wheel and indicates the number of winds in the mainspring; and a torque transfer clutch unit that disengages torque transfer between the inside-end wheel and outside-end wheel by means of the torque return unit when the mainspring unwinds and the duration time indicating unit indicates a predetermined reference number of winds.

Abstract: A holder for paper-keeping bags is disclosed, which comprises an elastic sleeve with U-shaped transverse section open at along one longitudinal side, a sliding bind base inserted into the elastic sleeve slidably in the longitudinal direction, a board bonded at one side edge adhesive portion of the sliding bind base and a plurality of paper-keeping envelopes held in layers at one side edge holder portion of the board.

Abstract: A static induction apparatus including a vessel for containing a main body of the static induction apparatus, a plurality of reinforcing support members secured to side plates of the vessel and a sound reducing structure. The sound reducing structure includes a plurality of sound reducing members supported between the reinforcing support members and each including a sound insulating panel composed of high damping metal plate, a resilient plate formed of thin metal sheet material interposed between the sound insulating panel and the reinforcing members, and a weight member secured to the vicinity of the boundary between the sound insulating panel and the resilient plate.