Patents Represented by Attorney Hal Jay Bohner

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  • Bi-loop heat recovery system
    Patent number: 4300527
    Abstract: A heating system for dwellings or other enclosures includes a furnace in which a burner is isolated from a hot air or water system, and receives substantially all of its combustion air from outside the enclosure and preheated. A heat exchanger is provided between exhaust gases from the burner of the furnace and the combustion air.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: November 17, 1981
    Inventor: Albert Montague
  • Sludge thickening apparatus
    Patent number: 4082671
    Abstract: The following disclosure teaches means for thickening primary and secondary sewage sludge. The disclosed apparatus comprises a tank having upper and lower feedwells disposed therein. Primary sludge is introduced into the lower feedwell and flows into the lower part of the tank to thicken therein. Secondary sludge is aerated under super atmospheric pressure and introduced into the upper feedwell so that it flows therefrom and thickens in the uppper part of the tank by flotation type thickening.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: April 4, 1978
    Assignee: Envirotech Corporation
    Inventor: Earl M. Kelly