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.

Abstract: The invention provides a container for collecting, storing and transporting a liquid. The container includes a hollow container body having a top wall having a central, inwardly directed fluid directing portion and an opening in the fluid directing portion for permitting liquid collected in the fluid directing portion to pour into the hollow container body. The container also has a spout sized for pouring out liquid collected in the container body. A roller assembly on an underside of the container body permits rolling movement of the container body along a supporting surface. The container also has suitable means such as bearing grooves for securing the roller assembly to the container body.