Patents Assigned to Envirotech Systems
  • Patent number: 6389226
    Abstract: A compact tankless water heater of modular configuration to accommodate a range of potential demands is disclosed. A heat transfer chamber is divided into subchambers, each of which may may mount more than one heating element. Notched passageways at the top of each dividing wall allow water passage between chambers, and a plurality of temperature sensors act in concert with a flow sensor and microprocessor control of the heating elements to maintain a constant set point output water temperature.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: May 14, 2002
    Assignee: Envirotech Systems Worldwide, Inc.
    Inventors: Stephen D. Neale, Randall W. Stultz, Andrew Hruska, Gary Gordon, Steven J. Onder
  • Patent number: 5730072
    Abstract: A method and system for continuous incineration of solid waste, directed to reducing formation of pathogens (such as dioxins) during incineration by inducing rapid combustion in an oxygen-rich environment. Waste may be shredded first. Waste is then dispersed widely across a first combustion chamber in which it undergoes incineration into ash and gas. Alternative embodiments for continuous removal of hot ash are disclosed. Gas is encouraged to travel a spiral path into a second combustion chamber, in which further incineration occurs. Gas travels through the second combustion chamber also in a spiral path, and is cooled in a quench tube. An evacuator means, advantageously a large fan, draws air through the system continuously during combustion, encouraging flow of waste through the system and replenishing oxygen available for rapid combustion.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: March 24, 1998
    Assignee: Advanced Envirotech Systems, Inc.
    Inventors: Frank H. Wright, Martin A. Sokolowski, Matthew H. Fleeger
  • Patent number: 5680821
    Abstract: A method and apparatus for safely conveying hazardous solid waste material to a waste processing system; for enhancing its subsequent combustion, in the case of an incinerator; and for reducing the size and duration of a moisture plume created by water vapor in the gases exiting such combustion process. The waste may be inside boxes, bags, or other containers, or may be in loose bulk form. The waste is dropped into a hopper. The hopper lid is of a design to offer safety from personal exposure to the waste and from any size reduction equipment, such as a shredder, and/or conveying machinery that might be at the bottom of the combustion chamber in the case of an incinerator. An air draft is hopper.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: October 28, 1997
    Assignee: Advanced Envirotech Systems, Inc.
    Inventors: Frank Wright, Matthew Fleeger
  • Patent number: 5327741
    Abstract: A refrigerant recovery machine which includes a distiller, oil separator, filters and an air separator to purify and reclaim refrigerant gas from a cooling system. The air separator may include a dual pressure gauge to regulate partial pressures of air and refrigerant to prevent the refrigerant from being vented to the atmosphere.
    Type: Grant
    Filed: January 14, 1992
    Date of Patent: July 12, 1994
    Assignee: Envirotech Systems
    Inventors: James L. Mason, Martin H. Pingel