Patents by Inventor Peter H. Drechsler

Peter H. Drechsler 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).

  • Apparatus for and methods of stabilizing and regenerating metalworking fluids
    Patent number: 5589138
    Abstract: Metalworking fluids (MWFs) can be regenerated and stabilized by the controlled addition of a chelating agent. The resulting sequestration of the dissolved metals in the MWF has been found to reduce incidence of dermatitis, to control the growth of microbes including bacteria and fungi, and to reduce the generation of odors, all without the further addition of fresh (virgin) MWF or a conventional biocide. Apparatus useful for this control includes monitoring means for determining the presence of free metal ions in the MWF, testing means for determining the concentration of free metal ions if present, and addition means for adding, in a controlled manner, a chelating agent for sequestering the free metal ions.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: December 31, 1996
    Assignee: The Torrington Company
    Inventor: Peter H. Drechsler
  • Methods of regenerating metalworking fluids with chelating agents
    Patent number: 5445945
    Abstract: Metalworking fluids (MWFs) can be regenerated and stabilized by the controlled addition of a chelating agent. The resulting sequestration of the dissolved metals in the MWF has been found to reduce incidence of dermatitis, to control the growth of microbes including bacteria and fungi, and to reduce the generation of odors, all without the further addition of fresh (virgin) MWF or a conventional biocide.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: August 29, 1995
    Assignee: The Torrington Company
    Inventor: Peter H. Drechsler