B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
137/60, 222/94
B65D 35/50 (2006.01)
Patent
CA 1066240
ABSTRACT: A valve intended to open in response to a pressure difference between the in- terior of the valve and the exterior thereof comprises a diaphragm which in its closing position is conical. The diaphragm has an opening which is normally closed by means of a valve stem. Arrangements are made to prevent communication between the interior of the valve and the exterior thereof until said dia- phragm has been deformed to a substantially planar shape.
296051
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