Sealed container and suction pump unit

Details Sealed container and suction pump unit Sealed container and suction pump unit

1996-10-18

1998-04-07

Walczak, David J.

Fluent material handling, with receiver or receiver coacting mea

Evacuation apparatus

215228, 251 65, 137550, 22020307, B65B 3104

Patent

active

057353174

ABSTRACT:
A sealed container and suction pump unit including a sealed container, and a suction pump adapted for drawing air out of the sealed container, the suction pump having a vacuum mount adapted for securing to the container body of the sealed container, and a bottom coupling groove adapted for coupling to the container cover of the container body of the sealed container, the container cover of the sealed container having a center air hole through which air can be drawn out of the container body by the suction pump, an upward coupling flange raised around the center air hole and adapted for engaging the bottom coupling groove, an air filter element mounted in the center air hole to remove solid particles from air passing through, a metal pressure plate supported on a seal ring inside the center air hole and attracted by a magnet to seal the air passage, and a press member mounted in the center air hole and controlled to tilt the metal pressure plate in opening the air passage.

REFERENCES:
patent: 4051971 (1977-10-01), Saleri et al.
patent: 5002090 (1991-03-01), Ichikawa et al.
patent: 5390809 (1995-02-01), Lin
patent: 5449079 (1995-09-01), Yang

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