Patents by Inventor Warren E. Kelm

Warren E. Kelm 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).

  • Air seal for rotary dryer/kiln
    Patent number: 8109009
    Abstract: A rotating drum in an oven is sealed against hot gas and air transfer. An annular outer seal holder has an L shaped cross section. A first end of the holder is connected to the oven. A second end is a radial flange. A backing plate has first and second sections. The first section has an inward extending guide. The second section has an inner diameter larger than an inner diameter of the guide portion. Bolts hold the backing plate and the seal retainer segments assembled on the flange. A cylindrical space between the radially guide portion of the backing plate and the seal retainer segments receives radially outwardly extending holder plates of segmental inner sealing elements. Partially cylindrical plates welded to the holder plates engage a drum wear plate. Leaf springs are connected to the seal retainer segments. Inner edges pressing the cylindrical plates radially inward.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: February 7, 2012
    Inventors: Jerry R. Collette, Warren E. Kelm
  • Rotary thermal recycling system
    Patent number: 7993048
    Abstract: A Rotary thermal processor for particulate materials has a rotating drum and a rotating hollow auger. A stationary cylindrical oven with stationary coils surrounds the rotating drum. Hot gas heats a first part of the oven, coil and drum. A rotating hollow auger is heated with hot fluid from the coils. Oven exhaust sweeps evaporated and volatized components of the treated materials to separators and a thermal oxidizer. Cleaned gas from the thermal oxidizer heats a second part of the oven coil and drum and exits a stack. The rotating drum and auger lifts and turns the treated material as it is advanced by the auger.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: August 9, 2011
    Inventors: Jerry R. Collette, Warren E. Kelm
  • Auger flight support for plural auger coal mining systems
    Patent number: 6679559
    Abstract: An auger flight support for use with an augering systems for mining which bores a pair of side-by-side holes through the coal seam using respective augers. Each auger includes a drilling section which is followed by a series of auger flights for conveying the bored coal back out of the respective hole. The auger flight support includes a pair of thrust bearing and housing assemblies which are tied together and each supported by a respective leg which lowers the friction between the auger flight and the bottom of the bore. This significantly reduces the power required to rotate the augers.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: January 20, 2004
    Inventor: Warren E. Kelm
  • Auger mining machine
    Patent number: 4264106
    Abstract: An auger machine, such as a mining machine, embodying features that reduce the cost of mining.
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: April 28, 1981
    Assignee: The Salem Tool Company
    Inventors: Ronald C. Deeter, Thad A. Lora, Warren E. Kelm