Patents by Inventor Leslie C. Hamer

Leslie C. Hamer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and apparatus for control and optimization of filtration process
    Patent number: 4198298
    Abstract: A process control apparatus and system for dewatering a solids ladened slurry of water and waste water embodying one or more of four primary process control techniques, depending upon the particular process application.The four process control techniques are (1) monitoring of the instantaneous solids concentration increase in the dewatering unit, (2) measurement of the rate of change of the solids concentration increase with respect to time, (3) controlled pumping to produce a substantially constant flow rate in the effluent from the dewatering unit until the terminal dewatering pressure is reached, and (4) variation of the amount of conditioning agents added to the influent slurry in response to one or more control signals derived from other components of the dewatering system and apparatus.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: April 15, 1980
    Assignee: EDC/Enviro Development Co., Inc.
    Inventors: Matthew M. Zuckerman, Leslie C. Hamer
  • System and apparatus for control and optimization of filtration process
    Patent number: 4151080
    Abstract: A process control apparatus and system for dewatering a solids ladened slurry of water and waste water embodying one or more of four primary process control techniques, depending upon the particular process application.The four process control techniques are (1) monitoring of the instantaneous solids concentration increase in the dewatering unit, (2) measurement of the rate of change of the solids concentration increase with respect to time, (3) controlled pumping to produce a substantially constant flow rate in the effluent from the dewatering unit until the terminal dewatering pressure is reached, and (4) variation of the amount of conditioning agents added to the influent slurry in response to one or more control signals derived from other components of the dewatering system and apparatus.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: April 24, 1979
    Assignee: Enviro Development Co., Inc.
    Inventors: Matthew M. Zuckerman, Leslie C. Hamer