Abstract: Provided is a seaming device capable of easily adjusting clearances between a chuck unit (seaming chuck device) and first and second seaming rolls in a short period of time, easily changing a seaming cycle, and producing a seamed sample can at a normal operation speed. In the seaming device, a seaming unit (130) carries out seaming operation by seaming rolls (131), a driving source for the swinging shaft (132) of the seaming rolls (131) is configured to be capable of controlling the seaming operation independently, and the driving output shaft (137) of a driving source (158) and the swinging shaft (132) of the seaming rolls are coupled through a ball spline (140).

Abstract: Provided is a seaming device capable of preventing dents, caused by a can guide or a seaming turret pocket, and buckling resulting from the dents during seaming, and capable of improving seaming accuracy, by stabilizing the posture of the can being transferred when the can is supplied from an infeed conveyor. The seaming device (100) includes a can placement unit (110) that places a can (C), a seaming chuck unit (120) provided opposite thereto, and a seaming roll (131) that seams an opening of a can (C) and a lid (F). The can placement unit (110) includes a pressing mechanism (111) that presses a plate (112), on which a can is placed, resiliently upward. The seaming chuck unit (130) and the seaming roll (131) are configured to be capable of moving up and down.

Abstract: A variable-speed driving device particularly adapted for an automotive internal combustion engine and associated AC generator. The device includes a driver shaft, such as the crankshaft, a constant-speed-ratio driven shaft, a variable-speed-ratio driven shaft, such as the AC generator shaft, two driver pulleys of different diameters mounted on the driver shaft, a single constant-speed-ratio driven pulley mounted on the constant-speed-ratio driven shaft, and two speed-changing pulleys mounted on the variable-speed-ratio driven shaft. One driving belt is trained over a drive pulley, single constant-speed-ratio driven pulley, and one pulley and an additional belt is trained around the second drive pulley, the second speed-changing pulley, and, if desired, over another constant-speed-ratio pulley on another shaft. There is a changeover mechanism for selectively coupling the speed-changing pulleys to the variable-speed-ratio driven shaft at the desired speed ratio depending on the speed of the driver shaft.

Abstract: A toothed elastomeric belt for use in a power transmission system includes teeth having a cross-sectional configuration that includes a cycloidal convex curve that extends from the tooth tip and is smoothly connected to the bottom land between adjacent teeth by an arcuate fillet.