Suction device

Details Suction device Suction device

2005-04-26

2005-04-26

Wilson, Lee D (Department: 3723)

Work holders

With fluid means

Vacuum-type holding means

C269S2890MR

Reexamination Certificate

active

06883791

ABSTRACT:
A suction device includes a substrate having a plurality of aperture, in each of which an inner ring, a plug and an outer ring are mounted. The plug is moved between the inner ring and the outer ring. The inner ring and the plug are made of a magnet and a magnetic material to attach the plug on the inner ring to seal an axial hole of the inner ring. The plug will move to the outer ring by an external force, such as airflow, to seal an axial hole of the outer ring. An air guide plate is attached on the substrate and has a plurality of channels to be communicated to the axial holes of the outer rings respectively and to extract air therefrom.

REFERENCES:
patent: 5562276 (1996-10-01), Blick
patent: 5853169 (1998-12-01), Hern et al.
patent: 6286822 (2001-09-01), Blick
patent: 6439559 (2002-08-01), Kinnard et al.

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