Undersea Industries, Inc.

David R Denis

A scuba diving oil filled depth gauge has a rigid or semi-rigid case that houses operative depth gauge elements. Outside pressure is communicated to the inside oil through a rolling diaphragm made of thin and highly flexible rubber-like material. The expansion and contraction of the oil due to thermal and other effects produces compensation at the rolling diaphragm without the imposition of stresses whereby a true communication of external to internal pressure is accomplished for accurate reading of the gauge.

Temperature compensated depth gauge for scuba diving

An independent weight system for underwater breathing equipment, the underwater breathing equipment having an air tank and a flotation device attached to a supportive back pack assembly, the weight system having a clamping means securing a weight assembly to the tank whereby the center of gravity of the underwater breathing equipment and attached weight system is below the center of buoyancy of the underwater breathing equipment and weight assembly.

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Azusa, CA, United States of America

David R Denis