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:
Inflatable rubber dinghies, familiar around most wharf areas, are made safe for scuba tank users by a plurality of interlocking rigid base sections which insert laterally across the floor of the dinghy and over both inflatable side tubes of the dinghy. Each base section includes a support for holding a scuba tank in an upright position and each such support is secured to a rail, running front-to-back along the axis of the dinghy, to which the base sections are secured. The interlocking inserts not only provide for secure transport of the scuba tanks but do so in a way which occupies little space and provides for increased stability for the dinghy.
Abstract:
A bracket for stabilizing a cylindrical compressed air tank suitable for scuba diving against a bulkhead of a boat, the bracket having an operating position where the bracket arms are extended perpendicular to the boat bulkhead for firmly holding a cylindrical tank in place while it rests on its base and pivotal arms that move downwardly flush with the bulkhead and parallel to in an out-of-the-way position when the bracket is not in use. The bracket is comprised of two identical components which can be interlocked together adjustably longitudinally in length to accommodate compressed air tanks of different diameters. Each bracket component has two separate pieces that have an interlocking hinge, both pieces of which can be molded so that the entire bracket can be fabricated at low cost.
Abstract:
A regulator and fill valve assembly for filling a fluid pressure tank and for regulating the flow of pressurized fluid from the tank includes a regulator portion having a valve body with a piston chamber. A pressure flow passageway extends from an inlet end to a first end of the piston chamber and an outlet port communicates with the piston chamber. A piston is movable in the piston chamber. A first spring at a second opposite end of the piston chamber urges the piston toward the first end of the piston chamber. A handle is provided for manually controlling the force of the first spring acting on the piston. A check valve assembly is located in the passageway and includes a seat, a valve member, a valve guide and a second spring biasing the valve member and guide towards the seat. The valve member is movable in a direction towards a closed position against the seat by fluid pressure in the passageway and the biasing force of the second spring. A valve check actuator is located between the piston and the valve check. Movement of the piston toward the first end of the chamber tends to move the valve member to an open position. The assembly also includes a fill valve portion having valve body member with a through passageway including another valve chamber open at one end. A restricted flow passage is at the other end of the valve chamber. An outlet opening is connected to the flow passage. The valve body member is connected to the valve body so that a pressure port in the valve body communicates with the open end of the valve chamber. A valving member is slidable in the valve chamber and has a nose that opens and closes the restricted flow passage. A head of the valving member is located in the open end of the valve chamber. Portions establish fluid flow through the fill valve when the restricted flow passage is open. A spring acts on the valving member to urge it toward an open position. Fluid pressure in the pressure port acts on the head and holds the valving member closed until the force of the fluid pressure is overcome by the spring force. The spring holds the valving member open to permit the tank to be evacuated and charged with pressurized fluid.
Abstract:
A liquified petroleum cylinder has a reserve cylinder within it provided with a separate outlet external to the main cylinder. The reserve cylinder may be provided with a non-return valve (not shown in FIG. 1), whereby both cylinders may be filled with gas through the same external valve.
Abstract:
The present invention provides a portable source of high pressure gas that may be used by service or construction workers. A portable high pressure cylinder is filled with liquid CO.sub.2. A triggering device is threadably connected to a fitting on the upper portion of the cylinder, which fitting contains a high pressure press release valve and an over-pressure relief valve. A unitary housing for the triggering device contains all of the other internal working parts, including the push plate, plunger, and other components for a simplistic, easily usable source of pressurized gas. A belt clip allows the workmen to carry the source of pressurized gas with them for ease of use in their jobs.
Abstract:
A pressure regulator is described including an integral indicator which signals the near depletion of gas in a compressed gas cylinder to which the regulator is connected. The indicator remains extended as long as an adequate supply of gas remains in the cylinder. Upon the near depletion of the gas, the indicator withdraws into the regulator body to warn of the near depletion of gas.
Abstract:
An apparatus for holding a fluid under pressure, including a container for containing the fluid under pressure and a valve mounted on the container. The container has a passage leading to the exterior of the container, and the valve has an actuator for moving the valve between closed and open positions. A locking device is responsive to movement of the actuator to a position in which the valve is open to lock the actuator against movement that would close the valve. Consequently, the valve is locked in the open position.
Abstract:
A carbon dioxide fill manifold and method for using which is designed to provide a end-user with an uninterrupted supply of carbon dioxide gas, while at the same time eliminating the necessity of transporting individual, conventional pressurized bottles to be refilled. In a most preferred embodiment the carbon dioxide fill manifold includes a fill line valve connected to an atomizer for receiving a fill line and introducing liquid carbon dioxide into the atomizer, liquid cylinder ports provided in the atomizer for connecting a pair of liquid chambers to the atomizer and receiving and storing the liquid carbon dioxide, a gas cylinder port provided in the atomizer for connecting a vapor container to the atomizer and receiving gaseous carbon dioxide generated in the atomizer and a service line valve also connected to the atomizer for receiving a service lien valve and servicing the end user with gaseous carbon dioxide. A pressure actuated valve is also provided in the atomizer for periodically replenishing the supply of gaseous carbon dioxide from the liquid containers responsive to a selected pressure differential across the pressure actuated valve. A pressure relief valve is seated in the atomizer to guard against excessive liquid carbon dioxide system pressure.
Abstract:
A magnetic field generating system comprises a magnetic field generator (1); and a cooling system (4) having at least one thermal shield (6) surrounding the magnetic field generator. The system further comprises a temperature monitor (14, 15) for monitoring the thermal shield temperature; and a heater (13) for selectively heating the thermal shield so as substantially to maintain the monitored temperature substantially constant.