Patents by Inventor Christopher Michael HARTMAN

Christopher Michael HARTMAN 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).

  • Second cut arrow shaft extension
    Patent number: 9212873
    Abstract: A device for extending a shaft of an arrow including a hollow arrow sleeve having a forward end and a rearward end. The hollow arrow sleeve supporting at least one auxiliary, expandable, razor-sharp blade for pivoting movement between a stored position lying enclosed within the sleeve and a deployed position extending outwardly through a slot formed in the sleeve. The sleeve having at least one slot allowing passage of the at least one expandable razor-sharp blade from a stored position to a deployed position in response to movement of the at least one blade from the rearward position to the forward position relative to the sleeve. A member acting against the at least one auxiliary, expandable, razor-sharp blade for urging the blade toward the deployed position. A spring for biasing the member against the at least one auxiliary, expandable, razor-sharp blade.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: December 15, 2015
    Inventors: Christopher Michael Hartman, Ronald Mitchell Mcivor, John Edward Campbell
  • SECOND CUT ARROW SHAFT EXTENSION
    Publication number: 20140256482
    Abstract: A device for extending a shaft of an arrow including a hollow arrow sleeve having a forward end and a rearward end. The hollow arrow sleeve supporting at least one auxiliary, expandable, razor-sharp blade for pivoting movement between a stored position lying enclosed within the sleeve and a deployed position extending outwardly through a slot formed in the sleeve. The sleeve having at least one slot allowing passage of the at least one expandable razor-sharp blade from a stored position to a deployed position in response to movement of the at least one blade from the rearward position to the forward position relative to the sleeve. A member acting against the at least one auxiliary, expandable, razor-sharp blade for urging the blade toward the deployed position. A spring for biasing the member against the at least one auxiliary, expandable, razor-sharp blade.
    Type: Application
    Filed: March 3, 2014
    Publication date: September 11, 2014
    Inventors: Christopher Michael HARTMAN, Ronald Mitchell MCIVOR, John Edward CAMPBELL