Fluid metering apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 11, 1994
Grant Date -
N/A
app pub date -
Dec 17, 1991
filing date -
Dec 21, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A metering apparatus, which may be single or double acting, includes a valve device including a closure member, an inlet port, an outlet port and one or two other ports communicating with a metering chamber of the single-acting apparatus or respective metering chambers of the double-acting apparatus. The closure member prevents communication between the inlet port and the outlet port during normal working, but, to allow flushing of the apparatus by cleaning fluid, the closure member can be displaced to an abnormal position in which the inlet port communicates with the outlet port by way of the other port(s).
First Claim
Other Claims data not available