The specification relates to a divers weight which is secured to the belt in a manner which enables quick and easy weight changes. The weights are retained by a case having protruding ribs which grab the belt so as to prevent the weights from sliding or shifting on the belt.

A head enclosing helmet structure is provided including a fluidtight front viewing window and a lower access opening for upwardly removably receiving the head of the wearer of the helmet therethrough. The outer surface portions of the helmet portions disposed about the lower access opening are generally cylindrical and an annular collar of deformably and compressible material is wedgingly removably receivable between the inner surfaces of the access opening of the helmet and the opposing neck su...

A boat for divers comprising a hull in which there is a flow channel with a propulsion screw. The hull includes a flow channel for the water, an electric motor and control devices for the motor and the bow of the hull has a hydrodynamic configuration.

A lighted mask for underwater divers utilizing a monochromatic blue-green LED light source secured to the mask directing light to the front of the face plate of the mask and having a push button control mounted on the mask for actuating the light source.

A motorized propulsion device for swimmers and scuba divers which is to be attached to the user's forearms. The battery, motor, propeller and propeller shroud are arranged in a compact, linear, hydrodynamic manner. The watertight housing may have one or more integrally shaped nesting protuberances to comfortably accommodate the user's forearm and thereby prevent slippage. The front end surface of the housing has a control panel within reach of the user's fingers.

A safety device to be worn by a diver includes means for monitoring the breathing of the diver and causing release and inflation of a surface marker buoy attached thereto by a line if it detects he has stopped breathing. The monitoring means may also be operable to cause release of a cover of the device allowing the surface marker buoy to rise or the cover may be a simple friction fit pushed aside by the inflating marker buoy. The monitoring means includes a transducer monitoring the pressure of...

A buoyancy compensator that includes an air cylinder holder, a buoyancy compensating bag, a waist belt and a shoulder strap, these components being able to be detachably attached to the air cylinder holder, wherein the waist belt and the shoulder strap can be attached to the air cylinder holder adjustably at desired positions in the height-direction of the air cylinder holder.

The improved snorkel includes a conduit divided approximately mid-length by a first purge valve. The first purge valve is located adjacent and above the water surface when the snorkel is in use by a skin diver swimming face down on the water surface. The first purge valve opens under slight hydrostatic pressure and quickly drains water from the upper portion of the conduit when the skin diver returns to the surface after swimming or diving underwater. The lower portion of the conduit is purged f...

A buoyancy compensator for scuba divers having an integrated system for controlling the functions of inflation and discharge, which comprises a single control (20) stably connected to the inflatable vest (1) in a fixed position readily accessible by the scuba driver, and designed to perform the functions of inflation, by use of a push-button valve (21, 22), and of remote discharge, by use of a purely mechanical remote control consisting of a maneuvering lever (26) which acts on a sheathed flexib...

The present invention relates to an all-purpose, pneumatic powered signaling device including a first component capable of transmitting signals above water and a second component capable of transmitting a signal beneath the water. The first component includes a pneumatic air horn and the second component a diaphragm and piston. A button actuator is selectively depressed to create a flow passageway from a source of compressed air to the first and second components. A selector switch is selectivel...