Patents Examined by Peter A. Nelson
  • Patent number: 6802260
    Abstract: A safety and arming device has first and second portions of an explosive train fixably supported in a housing. A third portion of the explosive train is fixable in a first position such that the first and second portions remain operably separated from one another, and is further movable to a second position such that the first and second portions are operably coupled to one another via the third portion. An integrated water sensor/actuator is coupled to the third portion to provide the motive force that moves the third portion to its second position. The water sensor/actuator is based on a fibrous cellulosic material having anisotropic moisture-absorbing properties such that dried-in strain of the cellulosic material is greatest along one axis thereof. In the invention, a plug of the dry and compressed fibrous cellulosic material has a powder material coated thereon and mixed therewith.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: October 12, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert Woodall, Felipe Garcia, Chris Doyle
  • Patent number: 6739265
    Abstract: A segmented explosive device capable of producing a shock wave front upon being exploded by a detonation impulse generated by a selectively operable control device and communicated to the explosive device by a transmission line coupled between the control device and the explosive device. The explosive device has a first charge segment and a second charge segment disposed in an assembled relationship. The first charge segment has a first abutment surface formed on a portion of the exterior thereof and a cavity recessed in the first abutment surface. An output end of the transmission line is received by the cavity and contacts the first charge segment. The cavity of the first charge segment can be configured to dispose explosive material in the path of a plasma zone propagating through voids internal of the explosive device to facilitate advance detonation of the explosive material before a shock wave front trailing the plasma zone reaches the explosive material.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: May 25, 2004
    Assignee: The Ensign-Bickford Company
    Inventors: Farrell G. Badger, Lyman G. Bahr, Roger B. Clement
  • Patent number: 6708619
    Abstract: A cartridge shell 10 comprises a main body 12 defining a volume 14 for holding energetic material. The main body 12 has a first end 16 for location adjacent a toe 48 of a hole 46 and a second end 18 directed to the collar 50 of hole 46. The second end 18 is tapered to reduce in transverse area away from the first end to form a point or wedge-like member 20.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: March 23, 2004
    Assignee: Rocktek Limited
    Inventors: Edward Tota, Nigel Rogers
  • Patent number: 6684791
    Abstract: Encapsulated shaped charge for efficient initiation of hydrodynamic velocity detonation of explosives column. A water tight capsule with angled sides containing sufficient quantities of explosive and a detonator means where the capsule substantially occupies the cross-section of the bore-hole. The capsule contains up to 30 pounds of explosives. The capsule efficiently and sufficiently initiates a column of explosives whereby the amount of Nitrogen Dioxide is substantially decreased.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: February 3, 2004
    Inventor: Charles R. Barnhart
  • Patent number: 6679175
    Abstract: The present invention is directed to a cartridge that includes a number of advantageous features. For example, the cartridge can include a bulk energetic material, an igniter located in a central portion of the cartridge body, and a low void space in the cartridge.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: January 20, 2004
    Assignee: Rocktek Limited
    Inventor: Mihailo Gavrilovic
  • Patent number: 6668725
    Abstract: Technology for in situ remediation of undetonated explosive material. An explosive apparatus contains an explosive material in close proximity with a carrier containing microorganisms. An explosive mixture capable of self remediation includes an explosive material that is intermixed with or lies proximate to the carrier. The microorganisms are either mobile or temporarily deactivated by freeze drying until rehydrated and remobilized. The microorganisms are capable of metabolizing the explosive material. Examples of such microorganisms include Pseudomonas spp., Escherichia spp., Morganella spp., Rhodococcus spp., Comamonas spp., and denitrifying microorganisms. If the explosive material fails to detonate, the explosive is remediated by the action of the microorganisms. Remediation includes both disabling of the explosive material and detoxification of the resulting chemical compositions.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: December 30, 2003
    Assignee: The Ensign-Brickford Company
    Inventors: Farrell G. Badger, Brendan M. Welch, Ronald D. Thomas, Lyman G. Bahr, Dean F. Richards
  • Patent number: 6668726
    Abstract: Shaped charge liners, typically used in perforating guns, are formed from a zinc alloy of zinc and other metals such as aluminium and magnesium. The liners are formed into desired shapes, for example, by melting ingots and casting the alloy, or by machining bars formed from the alloy, or by stamping strips formed from the alloy, or by pressing powder formed from the alloy.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: December 30, 2003
    Assignee: Innicor Subsurface Technologies Inc.
    Inventor: Michael Norman Lussier
  • Patent number: 6666143
    Abstract: Many of today's weapons systems use surveillance and target acquisition (STA) devices which can exploit the infrared and millimeter wavebands of the electromagnetic spectrum. Designing obscurant devices which can provide screening against such systems often results in complicated or costly solutions. A device capable of mitigating these problems is described wherein an obscurant device (10), and more particularly a device capable of providing screening against the visual, infrared and millimeter wave regions of the electromagnetic spectrum, comprises an obscurant payload, a burster charge capable, when detonated by a detonator, of disseminating said payload and a payload casing wherein some or all of the payload casing is configured to disintegrate upon actuation of the burster charge and to act thereafter as an obscurant.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: December 23, 2003
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventor: Peter John David Collins
  • Patent number: 6662546
    Abstract: An aircraft gas turbine engine is provided with low observable fan features which reduce the radar signature of the engine and its aircraft. An aircraft gas turbine engine fan section has in direct serial flow relationship an inlet having fixed high swirl angle inlet guide vanes, a first stage of first fan rotor blades, a stage of first variable angle stator vanes, and a fan bleed. The inlet guide vanes are angled to block the linear line of sight of the rotating fan blades through the inlet and include a RAM treatment which preferably is a coating of a radar absorbing material on the surface of the inlet guide vanes. The exemplary embodiment has a multi-stage fan section with the mid-stage fan bleed disposed between the first and second stages of fan rotor blades.
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: December 16, 2003
    Assignee: General Electric Company
    Inventor: Rollin George Giffin, III
  • Patent number: 6663048
    Abstract: The invention entails apparatus for mounting a payload, such as a warhead, to bulkheads carried by munitions. The apparatus comprises fore and aft bulkheads depending from the munitions, each of the bulkheads having a substantially centrally located opening; bulkhead attaching structure carried by the payload and engaging at least one of the bulkheads, and at least one fastener carried by the bulkhead attaching structure and engaging both the payload and the bulkhead attaching structure. In one embodiment, the bulkhead attaching structure is an annular ring element disposed about and secured to the aft end of said payload. The ring element includes a first annular portion of a first diameter, and a second aft portion of a second diameter, the first diameter of said first portion being smaller than the second diameter to accommodate annular portions of the aft bulkhead. In a second embodiment, the bulkhead attaching structure comprises a step element carried by the payload, which abuts the fore bulkhead.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: December 16, 2003
    Assignee: Lockheed Martin Corporation
    Inventors: Scott Van Weelden, Steve Ericson
  • Patent number: 6659012
    Abstract: An ejection device for ejecting a plurality of submunitions (24a-d) having an adapter (10) including a control unit (12, 13, 14a-c, 15a-b, 16) and adapted for releasable fastening in an ejection barrel (2) of a discharger (1), and a submunitions cluster (20) including the submunitions and adapted for releasable connection, both mechanical and electrical, with the adapter. In the assembled condition of the device, the submunitions cluster is connected with the adapter, permitting submunitions to be ejected from the submunitions cluster. The control unit of the adapter controls the device to eject submunitions in one or more of a variety of ejection modes, such as sequentially one by one or at least in part simultaneously. The period between ejection of two consecutive submunitions may be adjustable. The ejection device may be integrated into a discharging unit including at least one discharger (1), such as a conventional discharging unit.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: December 9, 2003
    Assignee: Buck Neue Technologien GmbH
    Inventors: Josef Grassl, Ralf Heiduczek, Fritz Greindl, Martin Fegg
  • Patent number: 6660112
    Abstract: Technology for in situ remediation of undetonated explosive material. An explosive apparatus contains an explosive material in close proximity with microorganisms. An explosive mixture capable of self remediation in the form of an explosive material is intermixed with microorganisms. The microorganisms are either mobile or temporarily deactivated by freeze drying until rehydrated and remobilized. The microorganisms are capable of metabolizing the explosive material. Examples of such microorganisms include Pseudomonas spp., Escherichia spp., Morganella spp., Rhodococcus spp., Comamonas spp., and denitrifying microorganisms. A bioremediation apparatus that contains microorganisms and prevents contact between the microorganisms and explosive material is joined with an explosive apparatus that houses a charge of explosive material.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: December 9, 2003
    Assignee: The Ensign-Bickford Company
    Inventors: Farrell G. Badger, Brendan M. Welch, Ronald D. Thomas, Lyman G. Bahr, Dean F. Richards
  • Patent number: 6655289
    Abstract: The invention relates to trigger units for initiating pyrotechnic elements which usually consist of a switch and control unit, ignition means and an ignition charge body. Said switch and control element is triggered by way of an electric coupling via a line in order to initiate ignition. The line for the electric coupling and the dimensions of the switch and control element which are usually accommodated in an IC housing complicate the design and the automatic assembly of the trigger units. According to the invention, the switch and control element (1) is surrounded by a first shell (2). Said first shell (2) is connected to a second shell (1) which contains the ignition charge body (23). The invention is further characterized in that the ignition means (19) dip into said second shell (21).
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: December 2, 2003
    Assignee: Orica Explosives Technology PTY Limited
    Inventors: Wilhelm Bornheim, Friedrich Heinemeyer, Jan Petzold, Heinz Schäfer, Jürgen Zimmermann
  • Patent number: 6655291
    Abstract: A liner for a explosive shaped charge, such as those used in perforating operations in oil and gas wells, is formed from a powdered metal mixture that includes molybdenum. The molybdenum allows a higher density liner to be formed to create denser jets for achieving deeper penetration, but without the negative effect that often accompany the use of higher density materials. The molybdenum may be used in the amount of 0.5% to 25% by weight of the metal mixture, with tungsten and other constituents forming the remainder of the mixture.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: December 2, 2003
    Assignee: Owen Oil Tools LP
    Inventors: Dan W. Pratt, David S. Wesson, John K. Rouse
  • Patent number: 6655292
    Abstract: A camouflage device includes at least one releasable active material disposed in at least one container to interrupt a line of sight, whereby the container can be deployed as a preventive measure and the active material can be remotely activated, if necessary. The container(s) can be brought to the desired location to be off-loaded by a transport vehicle, such as a truck.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: December 2, 2003
    Assignee: Buck Werke GmbH & Co.
    Inventor: Rudolf Salzeder
  • Patent number: 6655290
    Abstract: A blasting mat assembly comprising a steel plate member having thickness capable of bearing a blasting pressure of explosives inputted to blasting hole; an elastic member which is fixedly attached along a bottom edge of the steel plate member for isolating blasting noise, blasting gas and flying material. Explosives inputted into each blasting hole of blasting region are discharged; and a weight reinforcing member which is welded to a top surface of the steel plate member in a structure of a grid frame made of steel beams.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: December 2, 2003
    Inventor: Yong-So Cho
  • Patent number: 6651564
    Abstract: An improved seismic method comprises the steps of generating seismic waves by exploding an explosive composition in a subterranean formation, wherein the explosive composition comprises a first explosive material and an oxidizable metal material, and detecting the seismic waves and/or reflections thereof with seismic detectors. Also disclosed are geophysical survey systems that comprises a seismic energy source comprising a first explosive material and an oxidizable metal material, the seismic energy source being located in a subterranean formation, and a plurality of seismic detectors that are adapted to detect seismic waves generated when the seismic energy source explodes and reflections of these waves. A method of preparing an explosive composition is also disclosed.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: November 25, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Glen-Allan Tite, James E. Brooks, Wallace E. Voreck
  • Patent number: 6647888
    Abstract: An oxidizer package for a propellant system for a motor in which the oxidizer is separated from fuel grain, the oxidizer package comprising oxidizer material and an ignition system therefor in a wrapping or sealing material. A hybrid rocket comprising oxidizer material and fuel grain, the oxidizer material being separated from the fuel grain and being in the form of a single package or plurality of packages of oxidizer material and an ignition system therefor, said packages generally conforming to the shape of the rocket. A grid of a pyrotechnic material. A propulsion system for a hybrid rocket comprising oxidizer material in a matrix, mesh, wool, foamed metal or wires of structural or pyrotechnic material.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: November 18, 2003
    Inventors: Anthony Joseph Cesaroni, Michael J. Dennett, Korey R. Kline, Kevin E. Mahaffy, Kevin W. Smith
  • Patent number: 6644203
    Abstract: An explosive device (10) comprising: and explosive charge body (12) including an explosive charge and detonator (21); a housing (22) attached to the explosive charge body (12); and a length of electrical or non-electrical non-pyrotechnic firing line (26) having a first (28) and second end (32) the majority of which is stored within the housing so as to permit progressive removal from the housing on pulling the first end (28) thereof, and which is attached at the second end (32) to the detonator (21). The explosive device (10) can be used in a versatile manner for avalanche control, can allow a degree of positioning after initial deployment and provide safe operation yet is easily handleable, readily deployed and compact, and negates the hazards associated with the use of pyrotechnic delay fuze.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: November 11, 2003
    Inventor: Kevin Mark Powell
  • Patent number: 6644201
    Abstract: A device, system and method permitting on-line explosives-based cleaning and deslagging of a fuel burning facility such as a boiler, furnace, incinerator, or scrubber. A coolant, such as ordinary water, is delivered to the explosives to prevent them from detonating due to the heat of the on-line facility. Thus, controlled, appropriately-timed detonation can be initiated as desired, and boiler scale and slag is removed without the need to shut down or cool down the facility.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: November 11, 2003
    Assignee: NorthAmerican Industrial Services, Inc.
    Inventors: Francis Zilka, Timothy Zilka, Kurt Prouty, Donald Howard, Christopher Scaringe, William Youngs