Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction
Reexamination Certificate
2007-10-16
2007-10-16
Bastianelli, John (Department: 3753)
Valves and valve actuation
With means to increase head and seat contact pressure
With positive reduction
C251S192000, C251S203000
Reexamination Certificate
active
11399445
ABSTRACT:
A gate valve apparatus includes a valve body to open and close a target object transfer port in a vacuum processing system. The valve body is reciprocated in a first direction relative to the transfer port. A support rod is connected to the valve body and extends in the first direction. A driving mechanism is configured to drive the valve body through the support rod. The driving mechanism includes a movable shaft structure reciprocated in a second direction perpendicular to the first direction. A first cam structure coupling the movable shaft structure to the support rod includes a portion that converts reciprocation movement of the movable shaft structure in the second direction into reciprocation movement of the support rod in the first direction. A swing drive is configured to swing the support rod and valve body about the central axis of the movable shaft structure.
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Bastianelli John
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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