초록 ▼

A vacuum apparatus for easily forming a vacuum in any bottle, container or the like and for providing a stable sealing. A lower cylindrical member together with a disc member forms a space portion in which a vacuum or an atmospheric pressure is applied, and the lower portion of an upper cylindrical

A vacuum apparatus for easily forming a vacuum in any bottle, container or the like and for providing a stable sealing. A lower cylindrical member together with a disc member forms a space portion in which a vacuum or an atmospheric pressure is applied, and the lower portion of an upper cylindrical member is inserted in the space portion and divides the space portion into upper and lower spaces. With a downward movement of the upper cylindrical member, the upper space expands and draws air inside of a bottle, and with an upward movement thereof, the air introduced into the upper space is vented outside. At this time, a check valve is selectively opened and closed and is operated by a pressure difference applied thereon. By repetitive reciprocating movement of the upper cylindrical member, a high vacuum is formed in the bottle and is sealed by the check valve. The apparatus is adaptable in a vacuum bottle, a medical suction instrument or the like.

대표청구항 ▼

1. 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 p

1. 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.