Patents by Inventor John T. Heinrich

John T. Heinrich 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: 4893423
    Abstract: A quilting frame comprises a support structure, and a plurality of horizontal, elongate rollers to hold the desired quilting materials. These rollers terminate in shafts, which are captured in grooves formed between the block and cap portions of a split side rail. The block and cap of these rails are fastened together by a plurality of adjustable clamping bolts, preferably one adjacent each roller, so that pressure between the block and cap frictionally engages the roller shafts captured therebetween, and thus can be selected to lock or unlock the rollers within the rail. Also incorporated into this rail system is a lateral tension cord system comprising a small tension block conditioned for placement against the quilting material suspended between a pair of rollers, with at least one tension cord extending laterally from the block through a groove in the rail block. The quilting material is connected (e.g.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: January 16, 1990
    Inventor: John T. Heinrich