Patents by Inventor Mark R. Nyffeler

Mark R. Nyffeler 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: 5205150
    Abstract: The prior art teaches agricultural irrigation-pipes extending horizontally along and circularly surrounding a central-axis and provided with a sideward water delivery-opening and adjacently oftentimes being inflicted with inimicable dents that interfere with gating mechanism for the water delivery-opening. Herein disclosed is irrigation-pipe dent-removal tool and method which remove inimicable dents of the irrigation-pipe. The irrigation-pipe dent-removal tool includes a rear-plate confrontably abuttable at the irrigation-pipe inside-surface dents bulging and manually pullable thereagainst with an attached flexible cable, and further includes a front-plate (slidably surrounding the elongate flexible cable) confrontably abuttable at the irrigation-pipe outside-surface, and finally including threaded bolts (or the equivalent) for controllably drawing together the rear-plate and the front-plate to pressurably remove the inimicable dents of the intervening irrigation-pipe.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: April 27, 1993
    Inventor: Mark R. Nyffeler
  • Patent number: D349223
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: August 2, 1994
    Inventor: Mark R. Nyffeler