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Daniel E Nelson

Anju Nelson

Mickey C Nelson

A rocketjet engine has a light, hollow double-acting compressor piston (35 and 123). It is reciprocated by a smaller-diameter double-acting power piston (51) through a power shaft (52 and 60) connecting them. Up to 90 percent of intake air is routed from a compressor cylinder (36) to a thruster (1 and 106) and the remaining ten percent to a power cylinder (55). Fuel and water are preheated and sprayed into the power cylinder with phase-change injectors 67-70 at ends of compression strokes after complete flame-front propagation to actuate the compressor with combined combustion and steam pressure. To provide steam-propulsion pressure in addition to peak-heat combustion pressure and to cool the thruster, fuel is preheated and spray injected into an upstream combustor (8 and 109) portion of the thruster (1 and 106). Water is added as wet steam through a flash-boiler-steam injector (30) at a downstream portion of the combustor in order achieve prior peak combustion heat, pressure and completeness of flame propagation. Variable nozzle-to-throat-ratio thrusters (1) maximize thrust efficiency at any atmospheric or space altitude. Fixed-nozzle-to-throat-ratio thrusters (106) maximize efficiency and low weight at dedicated altitude ranges. A porous intake cone (90) has less frontal drag than pointed rocket engines. Various vibration-damping, power-take-off and operational features are provided.

Rocketjet engine

A floating fish holding container has flexible open mesh fabric side, top and bottom walls surrounding a chamber for accommodating fish in water. A top ring having buoyant material attached to the top of the side wall floats the container in a body of water. A bottom ring attached to the bottom of the side wall maintains the cylindrical shape of the container in the water. The top wall has an opening into the chamber that is biased to an open position with elastic cords. A draw string is used to close the opening. A releasable locking device on the draw string holds the top wall in the closed position. When the locking device is released the elastic cords automatically open the opening. A plurality of strings mounted on the side walls are used to adjust the length of the side wall to allow the container to float in shallow water without contacting the bottom or weeds in the body of water.

Floating fish container with adjustable length means and biased opening

A double-acting cam drive piston pump-refrigerator having a double-acting expander piston and a compact heat exchange condenser and evaporator with high density arrangement of heat exchange material.

Cam drive pump refrigerators

This is a deep well drill employing a Nelson air motor, a Nelson engine or other air motor for drilling power at the face of a petroleum or other deep well and having a cable and tube attached thereto and suspended from spools on a drill rig. A cutting container is attached to the drill to remove cuttings without mud. Drills for varying types of rock strata are provided. A type of foldable casing employed permits the use of the same diameter casing throughout the entire well of any depth, including deep wells to over 25,000 feet. Expandable bits at the end of the cable are provided for drilling selectively larger diameters for foldable casing walls and for safety valve and flow control anchors. The bits are also contractable for unobstructed travel up and down the well.

Growing community of inventors

Orlando, FL, United States of America

Daniel E Nelson