Patent ID: 6375024
Filing Date: 2002-04-23
Classification: B65B

Abstract:
A vacuum apparatus comprising:a first means for forming a space portion in which a vacuum or an ambient pressure is applied, the first means being connected to a space member which encloses a predetermined space; a second means for selectively forming a vacuum and ambient condition in the space portion, the second means being received a lower portion thereof into the first means for vertically reciprocating; a third means for connecting or closing a passage between the space member and the space portion responding to a movement of the second means; a fourth means for connecting or closing a passage between the space portion and ambient responding to the movement of the second means; and a fifth means for releasing a vacuum inside the space member, wherein the first means includes a lower cylindrical member with an upper portion thereof being opened and a first disc member mounted at an upper portion of the lower cylindrical member and defining an uppermost portion of the second means, the lower cylindrical portion being formed at a center thereof with a circular channel that extends upward from a lower portion of the lower cylindrical member, at a core portion of which a first passage communicating with the space member and ambient, at a circumferential portion of which a second passage is in fluid communication with the space member and the space portion, a first post that extends downward from the first disc member and having a predetermined clearance against the second passage, and a circular recess formed at an upper center portion of the first disc member.