Patents by Inventor A. David Huttie

A. David Huttie 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).

  • Penetration-resistant security passway and door therefor
    Patent number: 5983578
    Abstract: A penetration-resistant modular security passway (20) includes a concrete vestibule (24), a doorframe (70), and a penetration-reactive security door (32). The vestibule (24) has a plurality of reinforcing members (36), a plurality of lifting lugs (26), and an embedded passive antipersonnel device (56). The doorframe (70) has hinge and strike jambs (108,110) attached to the reinforcing members (36). The hinge jamb (108) has a plurality of studs (124) and the strike jamb (110) a plurality of deadbolts (126) for protrusion into the door (32). The door (32) has a substruction (72), to which are affixed grates (86,92) and cladding (84,90). A girdle (100) is affixed to the cladding (84,90). Within a space (76) within the substruction (72), a metallic cable (78) is woven and a plurality of individually sealed tubes (96) containing a foaming agent (98) under pressure are suspended.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: November 16, 1999
    Assignee: Arizona Public Service Company
    Inventors: A. David Huttie, Maurice A. Black