Patents by Inventor John E. Tober

John E. Tober 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).

  • Retractable needle and syringe combination
    Patent number: 5681292
    Abstract: A combination syringe and needle are disclosed wherein the needle is mounted to a retractable element which retracts into the body of the syringe plunger. The needle is mounted to the retractor which is spring biased to retract the needle. The retraction is actuated by releasing the forward end of the retractor from engagement with a collet positioned on the forward end of the syringe inner barrel. The collet is configured so as to clamp the forward end of the retractor and only releases the forward end when the collet is pushed forwardly, expanded, and disengages the forward end of the needle retractor.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: October 28, 1997
    Assignee: Retrax Safety Systems, Inc.
    Inventors: John E. Tober, Dennis J. Gordon, Douglas Couvertier