Patents by Inventor Luis Maria Aizpurua Plaza

Luis Maria Aizpurua Plaza 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 key-holder
    Patent number: 7856859
    Abstract: The present invention relates to a concealable key ring, including: a carrying plate with two side walls, at least one key ring axle mounted transversely between the two side walls, where the key ring axle has at least one slot made axially on the surface of the axle, a positioning pin having a body and two ends, the body of the positioning pin is partially mounted in the slot with the body partially extruding beyond the slot and the two ends of the positioning pin are fixed on the two side walls, and multiple keys each having a head with a transverse hole in the head where the perimeter of the hole has at least one groove made transversely through the head.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: December 28, 2010
    Inventor: Luis Maria Aizpurua Plaza
  • RETRACTABLE KEY-HOLDER
    Publication number: 20100005843
    Abstract: The present invention relates to a concealable key ring, including: a carrying plate with two side walls, at least one key ring axle mounted transversely between the two side walls, where the key ring axle has at least one slot made axially on the surface of the axle, a positioning pin having a body and two ends, the body of the positioning pin is partially mounted in the slot with the body partially extruding beyond the slot and the two ends of the positioning pin are fixed on the two side walls, and multiple keys each having a head with a transverse hole in the head where the perimeter of the hole has at least one groove made transversely through the head.
    Type: Application
    Filed: July 2, 2009
    Publication date: January 14, 2010
    Inventor: LUIS MARIA AIZPURUA PLAZA