Howell Laboratories, Inc.

Gary L Miers

Bruce G Merrill

David G Allen

An UHF antenna system having inner antenna conductor and an outer antenna conductor having end caps. The inner conductor is supported by one of the end caps. This provides an electrical short to the outer antenna conductor and a thermal short to ambient.

Antenna inner conductor and shorts system

Reverse osmosis, particularly for manually operating water desalination, is achieved using semipermeable membranes which selectively permeate purified water from a feed solution pressurized by reciprocating piston or diaphragm pump. The manual pump action is assisted by using two pump pistons to provide a continuous flow of feed solution to the concentrate side of the membrane to continuously flush the membrane surface. The concentration polarization is controlled by exhausting the high pressure concentrate to atmosphere through an orifice and relief valve.

Manually operated reverse osmosis desalinization system

A process of and apparatus for determining when the effective bromine contained in a polybromide impregnated resin cartridge used in a water disinfection system is depleted. The bromine content of the supply water is measured. When the bromine content falls below a pre-determined level, a comparative circuit is actuated to initiate flow of the supply water through a bromine cartridge assembly. At the same time, a timing cycle is initiated. The bromine content is continuously monitored and if it does not rise above the pre-determined level during the life of the timing cycle then an signal is output to indicate that the bromine cartridge is depleted.

Control of bromination of drinking water

A process of and apparatus for determining when the effective bromine contained in a polybromide impregnated resin cartridge used in a water disinfection system is depleted. The bromine content of the supply water is measured. When the bromine content falls below a desired level, a comparative circuit is actuated to initiate flow of the supply water through a bromine cartridge assembly. At the same time, a timing cycle is initiated. The bromine content is continuously monitored and if it does not rise above the desired level during the life of the timing cycle then an signal is output to indicate that the bromine cartridge is depleted.

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Poland Springs, ME, United States of America

Gary L Miers