Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Patent
1984-03-16
1986-09-16
Chin, Peter
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
137207, 138 26, 138 30, 162380, D21F 106
Patent
active
046120890
ABSTRACT:
Apparatus to reduce pressure pulsations in a pipe line. The apparatus comprises a central pipe to be connected to the pipe line. There is a resilient liner within the central pipe and an intermediate chamber is substantially concentric with the central pipe and open at each end. An opening in the central pipe is closed by the liner. Pressure variations in the central pipe are thus communicated to the intermediate chamber, which is attached to the central pipe. There is an outer chamber, closed at each end and substantially concentric with the intermediate chamber, and able to maintain a selected pressure.
REFERENCES:
patent: 4116259 (1978-09-01), Koskimies et al.
patent: 4169757 (1979-10-01), Kirjavainen
Chin Peter
Devron Engineering Ltd.
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