Patent ID: 6073503
Filing Date: 2000-06-13
Classification: B65B,F16H,Y10T

Abstract:
A cam assembly for an operative device, comprising:a cam being in the form of a disk and formed in a side surface of the cam with a cam groove having opposite ends left open at an outer periphery of the cam, the cam outer periphery having a portion interconnecting opposite ends of a cam groove-defining inner side face and serving as a cam contour face;a follower carrying a roller which is fittable in the cam groove and movable into contact with the cam contour face, the follower being in the form of a lever or an arm pivotally movable toward or away from the cam; andelastic means for causing the follower to follow the cam, the elastic means including a fluid pressure cylinder having a piston rod connected to the follower, wherein when the device is operative, the follower is urged by the elastic means inwardly so as to move the roller along the cam contour face and the cam groove whereby making the follower pivotally movable, while when the device is non-operative, the follower is retainable by the elastic means such that the roller is in contact with or away from the cam contour face whereby the follower is out of the pivotal movement,wherein the operative device is connected to the follower and has an operating member movable between an operative position where the operating member acts on an object and a nonoperative position, and the operating member is reciprocatingly movable between the operative position and the nonoperative position when the roller is fitted in the cam groove, the operative member being located in the nonoperative position when the roller is in contact with the cam contour face, andwherein the operative device is a container sealing device, and the object is a portion of a container to be sealed, the operating member comprising a pair of sealing members positionable at respective opposite sides of the container portion and movable between an open position and a closed position, the operative position being the closed position of the sealing members, the nonoperative position being the open position of the sealing members.