Shutter and gate valve assemblies for vacuum systems

Details Shutter and gate valve assemblies for vacuum systems Shutter and gate valve assemblies for vacuum systems

2008-02-20

2010-06-29

Fristoe, Jr., John K (Department: 3753)

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

C251S326000

Reexamination Certificate

active

07743790

ABSTRACT:
A shutter and gate valve assembly includes a valve housing that defines a passage therethrough, a valve member having a valve aperture, the valve member movable between a non-operating position that seals the passage and an operating position that aligns the valve aperture with the passage, and a shutter movable between a closed position that blocks the valve aperture and an open position that unblocks the valve aperture. The shutter member may be affixed to and movable with the valve member between the non-operating position and the operating position. The shutter may be provided with a shutter aperture that is aligned with the valve aperture in the open position.

REFERENCES:
patent: 434796 (1890-08-01), Leslie
patent: 2873761 (1959-02-01), Tailleferre
patent: 3804124 (1974-04-01), Finke et al.
patent: 4193574 (1980-03-01), Barnes et al.
patent: 4524796 (1985-06-01), Ayers et al.
patent: 4643226 (1987-02-01), Balz
patent: 5052440 (1991-10-01), Frank et al.
patent: 5094270 (1992-03-01), Reimert
patent: 6325096 (2001-12-01), Rising et al.
patent: 2004/0026467 (2004-02-01), Plattner et al.
patent: 2005/0150559 (2005-07-01), Kwon et al.
Jason L. Pittman, et al. “A Minimum Thickness Gate Valve with Integrated Ion Optics for Mass Spectrometry”, Boston University School of Medicine, 2004.

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