Dispensing – With refill preventing means
Patent
1987-09-29
1989-03-21
Rolla, Joseph J.
Dispensing
With refill preventing means
222 3, 251 82, B65D 4702
Patent
active
048135755
ABSTRACT:
Non-refillable valve has a housing with a central bore, which has a lower portion that is narrower than its middle portion that in turn is narrower than its upper portion. A side port is present in the lower region of the middle portion. An outlet nozzle is located in the side port. The lower end of the housing sealingly engages the pressure container to provide communication therebetween. The valve stem is rotatably positioned in the upper portion of the central bore. The valve stem contains a vertical bore in its bottom portion. A resilient valve sealing member has a body portion and a top pin which slidably fits in the bore in the valve stem. The sealing member has a top rim portion which has a continuous outer surface and does not have any slots, identations or the like. Also, the body portion does not have any arm or arms, particularly around its periphery. The top rim portion of the sealing member is comprisingly positioned in the upper portion of the central bore when the valve is inactive or being filled. The valve sealing member is pushed into the middle portion via the valve stem when the valve is placed in the active position. The non-compressed top rim of the sealing member is wider than the upper portion of the central bore, which prevents movement of the sealing member back into the upper portion of the central bore. The sealing member engages the seating interface when any refill of the container with pressurized fluid is attempted.
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Amtrol Inc.
Huson Gregory L.
Rolla Joseph J.
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