Patents by Inventor Paul A. Pace

Paul A. Pace 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: 5762635
    Abstract: A retractable needle syringe that includes a barrel assembly, a plunger assembly, and a needle assembly. The plunger assembly is movably mounted in the barrel assembly. And, the needle assembly is movably mounted in the barrel assembly and engagable with the plunger assembly, so that after the retractable needle syringe has been used, the plunger assembly is engaged with the needle assembly, the plunger assembly is pulled, and the needle assembly is drawn into the barrel assembly.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: June 9, 1998
    Inventors: Paul A. Pace, John J. Riddle
  • Patent number: 5484414
    Abstract: The invention is a syringe with a retractable needle, comprising a syringe housing having a bore, a needle assembly within the bore, and a plunger assembly extending into the bore. The plunger assembly has a rectangular key. The needle assembly has a key hole which matches the key, so that the key may be inserted into the key hole. After conventional use the plunger is rotated to lock the key within the key hole, and the plunger withdrawn to retract the needle through a resilient elastomeric seal into the syringe, rendering it inoperable and harmless.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: January 16, 1996
    Inventor: Paul A. Pace