Patents by Inventor David L. Thiede

David L. Thiede 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: 5494478
    Abstract: The present invention discloses a toolless quick change blade holder for receiving and supporting a blade in a skinning machine for trimming a layer of unwanted material from a meat product. The disclosed blade holder is equally well adapted for both automatic and manual machines. The blade holder comprises a lower base plate and an upper clamping plate adapted to be removably secured to the lower base plate. The blade is positioned between the forward portions of the lower and upper plates. A fulcrum device is included for removably securing the upper plate to the lower plate and for limiting upward movement of the central portion of the clamping plate relative to the base plate. A device for releasably separating the rearward portions of the upper and lower plates activates the fulcrum device causing pressure to be applied on the forward portions of the plates urging them together thereby creating a clamping action on the blade, retaining it in position.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: February 27, 1996
    Inventors: John W. Long, David L. Thiede
  • Patent number: 5476417
    Abstract: A bent blade holder for receiving, bending and supporting a flexible blade in an automatic skinning machine for trimming a non-linear layer of unwanted material from a meat product. The bent blade holder has a base plate having a base curved surface of a size and shape for removably receiving the flexible blade, a clamping plate adapted to be removably secured to the base plate and having a clamping curved surface substantially conforming to the base curved surface and means for removably securing the clamping plate to the base plate. The blade is removably secured between the base plate and the clamping plate and bent to conform to the base and clamping curved surfaces. A meat product is transported to the blade and maintained in trimming engagement therewith such that a portion of material conforming to the curve of the blade is trimmed from the meat product.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: December 19, 1995
    Inventors: John W. Long, David L. Thiede
  • Patent number: 5429548
    Abstract: An automatic feed mechanism upper conveyor for an automatic trimmer wherein a layer of material may be removed from a meat product. The automatic feed mechanism upper conveyor comprises: a conveyor frame, means for mounting the conveyor frame, first and second drive shafts mounted at each end of the frame and connected in tandem by a drive chain. A plurality of friction engagement wheels is mounted in spaced relation on each of the first and second drive shafts. The friction engagement wheels in cooperation with the feed means is operative to advance the meat product into trimming engagement with the trimming means and is operative to trim a layer of material from the meat product without pivoting the meat piece.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: July 4, 1995
    Inventors: John W. Long, David L. Thiede
  • Patent number: 5399118
    Abstract: The inclined automatic trimmer apparatus of the present invention includes a base frame and trimming blade mounted on the base frame for trimming unwanted material from the meat product. A feed conveyor is situated forwardly of the trimming blade for transporting the meat product to the trimming blade. A feed roller is mounted on the base frame adjacent the trimming blade to receive the meat product transported by the feed conveyor and to advance the meat product into trimming engagement with the trimming blade. A press roller is mounted on the base frame for rotating the meat in trimming engagement with the trimming blade. The feed roller trimming blade and press roller all form a "V" shaped trough for receiving the meat product.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: March 21, 1995
    Inventors: John W. Long, David L. Thiede
  • Patent number: 5236323
    Abstract: The automatic trimmer apparatus of the present invention includes a base frame and trimming blade mounted on the base frame for trimming unwanted material from the meat product. A feed conveyor is situated forwardly of the trimming blade for transporting the meat product to the trimming blade. A feed roller is mounted on the base frame adjacent the trimming blade to receive the meat product transported by the feed conveyor and to advance the meat product into trimming engagement with the trimming blade. A press roller is mounted on the base frame for rotating the meat in trimming engagement with the trimming blade.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: August 17, 1993
    Inventors: John W. Long, David L. Thiede