Patents by Inventor Mark J. ZIRNHELD

Mark J. ZIRNHELD 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).

  • Flitch surfacing apparatus
    Patent number: 8950449
    Abstract: A cutter head for surfacing a flitch, the cutter head including a shaft, a blade non-rotatably mounted on the shaft, wherein the flitch is surfaced by rotating the blade, a bushing including a bore, wherein the shaft runs through the bore, wherein a flange is eccentrically formed about the bore, a guide mounted on the flange of the bushing, wherein the flange axially offsets the guide with respect to the shaft, wherein the guide is arranged to support the cutter head against the flitch while the cutter head is surfacing the flitch, and wherein a radial distance between a tip of the blade and the guide determines a cutting depth of the cutter head, and wherein due to the guide being mounted on the eccentrically formed flange, the radial offset is determined based on a rotational orientation of the bushing about the shaft.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: February 10, 2015
    Assignee: Merritt Machinery, LLC
    Inventors: Arlington Ruff, Clifford Ruff, Mark J. Zirnheld, Michael T. Smith
  • FLITCH SURFACING APPARATUS
    Publication number: 20110132494
    Abstract: A cutter head for surfacing a flitch, the cutter head including a shaft, a blade non-rotatably mounted on the shaft, wherein the flitch is surfaced by rotating the blade, a bushing including a bore, wherein the shaft runs through the bore, wherein a flange is eccentrically formed about the bore, a guide mounted on the flange of the bushing, wherein the flange axially offsets the guide with respect to the shaft, wherein the guide is arranged to support the cutter head against the flitch while the cutter head is surfacing the flitch, and wherein a radial distance between a tip of the blade and the guide determines a cutting depth of the cutter head, and wherein due to the guide being mounted on the eccentrically formed flange, the radial offset is determined based on a rotational orientation of the bushing about the shaft.
    Type: Application
    Filed: December 3, 2010
    Publication date: June 9, 2011
    Applicant: MERRITT MACHINERY, LLC
    Inventors: Arlington RUFF, Clifford RUFF, Mark J. ZIRNHELD, Michael T. SMITH