Patents by Inventor David L. Riggs

David L. Riggs 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).

  • Safe and arm device and method of using the same
    Patent number: 7430964
    Abstract: A safe and arm device and method for a fuze in a bomb utilizing a piston and a drive shaft to rotate a rotor in and out of the safe and armed positions. The piston is operated by a difference in air pressure within the fuze as the bomb leaves its delivery vehicle.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: October 7, 2008
    Assignee: United States of America as represented by the Secretary of the Navy
    Inventors: Terrence Lane Munsinger, David L. Riggs
  • Safe and arm device and method of using the same
    Publication number: 20080223243
    Abstract: A safe and arm device and method for a fuze in a bomb utilizing a piston and a drive shaft to rotate a rotor in and out of the safe and armed positions. The piston is operated by a difference in air pressure within the fuze as the bomb leaves its delivery vehicle.
    Type: Application
    Filed: August 8, 2007
    Publication date: September 18, 2008
    Inventors: Terrence Lane Munsiger, David L. Riggs
  • Safe and arm device and method of using the same
    Patent number: 7320285
    Abstract: A safe and arm device and method for a fuze in a bomb utilizing a piston and a drive shaft to rotate a rotor in and out of the safe and armed positions. The piston is operated by a difference in air pressure within the fuze as the bomb leaves its delivery vehicle.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: January 22, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Terrence Lane Munsinger, David L. Riggs
  • Pyrotechnic-actuated dual air valve
    Patent number: 4570658
    Abstract: A pyrotechnically actuated dual air valve is hermetically sealed on both et and both outlet ports of static and dynamic air ducts until the dual air valve is actuated by a squib charge. A single piston, when activated by the squib charge, concomitantly opens all four hermetic seals to allow separate static and dynamic air flows through the dual air valve.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: February 18, 1986
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Charles F. Dean, Edward W. Lauer, David L. Riggs
  • Safe/arm device
    Patent number: H492
    Abstract: A safe/arm device has a rotor that aligns or misaligns a path for an explve. The rotor is aligned by the effects of a fluid pressure differential acting upon a piston of the device. This pressure differential causes the piston to translationally move and this movement is transmitted to the rotor by a shaft. The shaft fits within an axial bore defined by the rotor. This axial bore in turn defines a helical groove. A ball, partially recessed within a well defined by the shaft, rides within this helical groove. As the shaft is translationally driven within the axial bore, the helical groove of the rotor tracks the ball. Translational movement of the shaft is thereby converted to rotational movement of the rotor. As a safeguard, the shaft is split into two sections, one in engagement with the piston and the other in engagement with the rotor. By this arrangement, a predetermined amount of movement of the piston is required before this movement is transmitted to the rotor.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: July 5, 1988
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jerome A. Kong, David L. Riggs