Valves and valve actuation – With means to increase head and seat contact pressure – Gate valve
Reexamination Certificate
2007-04-03
2007-04-03
Bastianelli, John (Department: 3753)
Valves and valve actuation
With means to increase head and seat contact pressure
Gate valve
C251S250000
Reexamination Certificate
active
11312607
ABSTRACT:
An opening/closing mechanism for a vacuum processing apparatus comprises a link mechanism comprising a supporting member having first and second valve elements for closing first and second opening portions, and a base end side member rotatably attached at a rear edge portion side of the supporting member through a rotation axis, a guide mechanism rotatably supporting the supporting member to a horizontal moving direction of the first and second valve elements while restricting the vertical moving range of the supporting member, first and second guide members which move the rotation axis of the link mechanism to a vertical direction and at the top portion to the horizontal direction, and first and second vertical moving mechanisms which vertically move the first guide member, the second guide member and the base edge side member.
REFERENCES:
patent: 5330157 (1994-07-01), Dern et al.
patent: 6082706 (2000-07-01), Irie
patent: 6299133 (2001-10-01), Waragai et al.
patent: 6390448 (2002-05-01), Kroeker et al.
patent: 6390449 (2002-05-01), Ishigaki et al.
patent: 6431518 (2002-08-01), Geiser
patent: 6454241 (2002-09-01), Tamura et al.
patent: 6488262 (2002-12-01), Oka
patent: 6564818 (2003-05-01), Kroeker et al.
patent: 6601824 (2003-08-01), Kroeker et al.
patent: 2002-009125 (2002-01-01), None
Bastianelli John
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Tokyo Electron Limited
LandOfFree
Opening/closing mechanism for vacuum processing apparatus... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Opening/closing mechanism for vacuum processing apparatus..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Opening/closing mechanism for vacuum processing apparatus... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3796173