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Volume-control-module-for-use-in-diving

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Volume control module for use in diving

Details

Inventors: Leonard, Kenneth J.;
Assignee:
Primary Examiner: Graysay; Tamara L.
Assistant Examiner: Mayo; Tara L.
Attorney, Agent or Firm: Reid & Priest L.L.P.

A volume control module for controlling the volume of a fluid such as air in a buoyancy chamber of a buoyancy compensator device comprises a main unit and a selector pad. The main unit includes a main unit housing having a first opening connectable to the buoyancy compensator device and a second opening connectable to an inflator hose assembly. Three pressure sensors, a microprocessing unit, and intake and vent valves are provided in the main unit housing. A first pressure sensor measures ambient pressure; a second measures the pressure inside the buoyancy chamber; and a third measures the air pressure entering the intake valve. The microprocessing unit carries out a variety of buoyancy-control functions responsive to output signals from the pressure sensors. The intake and vent valves are both controlled by the microprocessing unit and are both normally closed. The intake valve is connectable to a source of low pressure fluid, while the vent valve vents fluid from the buoyancy chamber. A manual emergency cutoff switch on the main unit housing can deactivate the microprocessing unit and the first and second valves. An unobstructed first main passage in the main unit housing extends between the first and second openings of the main unit housing. A second main passage extends between the vent valve and the first opening of the main unit housing, and is fluidly connected with the intake valve. An intake passageway in the main unit housing fluidly connects the intake valve with the second main passage. The selector pad connected to the microprocessing unit includes switches for selecting a microprocessing unit function.

DETAILED DESCRIPTION It is therefore a primary object of the present invention to provide a volume control device for use in diving which enables a diver to control his or her buoyancy automatically.
It is another object of the present invention to provide a volume control device for use in diving which enables a diver to control his or her buoyancy by selecting the correct control choice.
It is still another object of the present invention to provide a volume control device for use in diving which monitors and adjusts the volume of the buoyancy chamber as needed to maintain the desired buoyancy.
It is still another object of the present invention to provide a volume control device for use in diving which calculates the buoyancy chamber volume needed to attain the desired control choice, then controls valves precisely to attain that volume.
These and other objects of the invention are achieved by the provision of a volume control module for controlling the volume of fluid in a buoyancy chamber of a buoyancy compensator device such as a buoyancy compensator vest.
The volume control module comprises a main unit housing having a first opening connectable to a buoyancy compensator device and a second opening connectable to an inflator hose assembly.
Three pressure sensors, a microprocessing unit, and intake and exhaust valves are provided in the main unit housing.
A first pressure sensor measures ambient pressure, and generates an output signal which is received by the microprocessing unit.
A second pressure sensor measures the pressure inside the buoyancy chamber of the vest.
A third pressure sensor measures the air pressure entering the intake valve.
Preferably, all three pressure sensors are pressure transducers.
Alternatively, a pressure switch can be used in place of the third pressure sensor.
The microprocessing unit is programmed to carry out a variety of buoyancy-control functions and is responsive to the output signals of the pressure sensors.
The intake and exhaust valves are both controlled by the microprocessing unit

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