Vacuum controller
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 3, 1989
Grant Date -
N/A
app pub date -
Oct 24, 1986
filing date -
Oct 24, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum controller for controlling the vacuum at a controlled vacuum which includes a balanced piston arrangement coupled to a valve piston reciprocal with respet to a valve seat positioned between the controlled vacuum and a high header or source vacuum. A throttling of the header vacuum takes place across the space between the valve piston and valve seat and is such that the header vacuum does not influence the movement of the valve piston.
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