Patents by Inventor Morgan R. Griesinger

Morgan R. Griesinger 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).

  • Double barrel speargun
    Patent number: 5595166
    Abstract: An improved speargun breach mechanism to prevent binding and increase the guns accuracy. The breach mechanism includes a pivotally mounted trigger and latch. The latch pivots between a cocked position and a firing position upon operation of the trigger. A spear cradle is mounted to the latch and has a generally semi-circular cross-section which closely receives the spear shaft to resist twisting movement of the latch and improve accuracy.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: January 21, 1997
    Assignee: E. Douglas Hougen
    Inventors: John W. Schmidt, III, Morgan R. Griesinger
  • Double barrel speargun
    Patent number: 5372118
    Abstract: A dual barrel speargun including an improved breach mechanism to prevent binding and an improved muzzle portion to increase speargun accuracy and decrease reload time. Also included is an improved safety mechanism whereby the safeties remain effective even after the triggers are partially depressed. The disclosed speargun is capable of converting from a fixed length tether to a spool type tether within seconds.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: December 13, 1994
    Assignee: E. Douglas Hougen
    Inventors: John W. Schmidt, III, Morgan R. Griesinger