Vent cap for discharging nearly empty propane cylinders

Details Vent cap for discharging nearly empty propane cylinders Vent cap for discharging nearly empty propane cylinders

1995-01-13

1996-10-15

Shoap, Allan N.

Receptacles

Closures

With condition responsive vent or valve

22020329, 2203671, 220DIG16, 116266, 137557, B65D 5116

Patent

active

055645844

ABSTRACT:
The invention provides a vent cap for automatically discharging a gas container such as a propane cylinder. The vent cap includes threads for securing the vent cap to the neck of the gas container. The vent cap further includes an indicator which has a pin and a button. When the button is manually depressed, the pin engages the valve stem of the check valve which seals the gas container, discharging gas from the container. The button includes a flexible, radially curved central portion which provides oil can action when the indicator is moved between the up position and the down position. A geometrical configuration of the central portion may be adjusted to vary the gas pressure threshold at which the indicator will remain in the down position to automatically discharge a nearly empty gas container.

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