Patents by Inventor Charles A. Pfretzschner

Charles A. Pfretzschner 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).

  • Patent number: 6131587
    Abstract: A disposal apparatus for use with a wash station and a towel dispenser includes a liquid source and a waste disposal unit arranged in fluid communication with the liquid source that (i) collects liquid from the liquid source and receives a spent towel dispensed from the towel dispenser, (ii) disintegrates the spent towel and generates a fluid vortex of liquid and disintegrated spent towel, and (iii) exhausts the fluid vortex.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: October 17, 2000
    Assignee: 144 Limited Partnership
    Inventors: William M. Chardack, Charles A. Pfretzschner
  • Patent number: 5992430
    Abstract: A hand washing and drying apparatus comprising a washing and drying chamber including at least one access port providing access for inserting at least one hand to be washed, a wash liquid dispenser in fluid communication with the interior of the washing and drying chamber for dispensing wash liquid within the washing and drying chamber, a blow dryer in fluid communication with the interior of the washing and drying chamber for providing a directed supply of drying air within the washing and drying chamber, a towel dispenser in communication with the interior of the washing and drying chamber for dispensing a towel, e.g., a disposable paper towel, within the chamber, and a waste disposal for disintegrating a spent towel dispensed from the towel dispenser and exhausting disintegrated waste through a drain. The apparatus further may include a control device for controlling the operation of the apparatus.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: November 30, 1999
    Assignee: 144 Limited Partnership
    Inventors: William M. Chardack, Charles A. Pfretzschner
  • Patent number: D365663
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: December 26, 1995
    Assignee: Kay G. Dwork
    Inventors: Kay G. Dwork, Charles A. Pfretzschner