Patents by Inventor David L. Hoelscher
David L. Hoelscher 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: 9571086Abstract: A bi-directional switch that includes a first terminal, a second terminal, and a plurality of ballast circuits is provided. Each ballast circuit includes a first metal-oxide-semiconductor field-effect transistor (MOSFET) comprising a first input connector, a first output connector, a first body, and a first body diode, and a second MOSFET comprising a second input connector, a second output connector, a second body, and a second body diode. Each first input connector is coupled to the first terminal, each second input connector is coupled to the second terminal, and each first output connector is coupled only to the second output connector of the second MOSFET that is in a same ballast circuit.Type: GrantFiled: January 7, 2015Date of Patent: February 14, 2017Assignee: Lockheed Martin CorporationInventors: Gregory G. Romas, Jr., David L. Hoelscher, Jatin N. Mehta
-
Patent number: 9391055Abstract: Power modules with reduced parasitic inductances are provided. A power module includes a first substrate including a first electrically-conductive layer and a second substrate including a second electrically-conductive layer. These substrates may be stacked on each other. A scalable network of power switches may be arranged on the substrates. Power bars may be connectable to the electrically-conductive layers through electromechanical interfaces at selectable interface locations. The locations and/or type of interface may be selectable based on the arrangement of the switches. The first and second electrically-conductive layers may be disposed on mutually opposed surfaces of a dielectric layer having a thickness chosen to effect a level of coupling between respective source and return current paths provided by the electrically-conductive layers.Type: GrantFiled: December 3, 2013Date of Patent: July 12, 2016Assignee: LOCKHEED MARTIN CORPORATIONInventors: Gregory George Romas, Jr., David L. Hoelscher, Thomas Eugene Byrd
-
Patent number: 9052069Abstract: A system is presented including a tube light mounted in a tube light socket. The tube light includes a printed wiring board, one or more LEDs mounted to the printed wiring board, and one or more sensors mounted to the printed wiring board. The tube light also includes a power supply mounted to the printed wiring board, such that the power supply is connected to the tube light socket to supply a direct current voltage signal to the printed wiring board. A method is also provided for forming the tube light and mounting the tube light into the tube light socket.Type: GrantFiled: February 21, 2013Date of Patent: June 9, 2015Assignee: LOCKHEED MARTIN CORPORATIONInventors: Gregory G. Romas, Becky Wallace, Jatin N. Mehta, David L. Hoelscher
-
Publication number: 20140233226Abstract: A system is presented including a tube light mounted in a tube light socket. The tube light includes a printed wiring board, one or more LEDs mounted to the printed wiring board, and one or more sensors mounted to the printed wiring board. The tube light also includes a power supply mounted to the printed wiring board, such that the power supply is connected to the tube light socket to supply a direct current voltage signal to the printed wiring board. A method is also provided for forming the tube light and mounting the tube light into the tube light socket.Type: ApplicationFiled: February 21, 2013Publication date: August 21, 2014Applicant: Lockheed Martin CorporationInventors: Becky Wallace, Gregory G. Romas, Jatin N. Mehta, David L. Hoelscher
-
Publication number: 20140152373Abstract: Power modules with reduced parasitic inductances are provided. A power module includes a first substrate including a first electrically-conductive layer and a second substrate including a second electrically-conductive layer. These substrates may be stacked on each other. A scalable network of power switches may be arranged on the substrates. Power bars may be connectable to the electrically-conductive layers through electromechanical interfaces at selectable interface locations. The locations and/or type of interface may be selectable based on the arrangement of the switches. The first and second electrically-conductive layers may be disposed on mutually opposed surfaces of a dielectric layer having a thickness chosen to effect a level of coupling between respective source and return current paths provided by the electrically-conductive layers.Type: ApplicationFiled: December 3, 2013Publication date: June 5, 2014Applicant: LOCKHEED MARTIN CORPORATIONInventors: Gregory George Romas, JR., David L. Hoelscher, Thomas Eugene Byrd
-
Patent number: 8715846Abstract: A slow-burn thermal battery includes a cathode, an anode, and a meltable electrolyte disposed between the cathode and the anode. The slow-burn thermal battery further includes a burnable fuse operably associated with the meltable electrolyte for melting the electrolyte.Type: GrantFiled: January 29, 2009Date of Patent: May 6, 2014Assignee: Lockheed Martin CorporationInventors: David L. Hoelscher, Toby D. Thomas
-
Patent number: 8618772Abstract: A transportable electrical energy storage system includes an electrical energy storage unit, an electrical energy storage unit management system operably associated with the electrical energy storage unit, an AC/DC rectifier operably associated with the electrical energy storage unit management system, and a DC/DC converter operably associated with the electrical energy storage unit management system. The system further includes at least one bi-directional adapter operatively associated with the electrical energy storage unit and a case for protecting the electrical energy storage unit, the electrical energy storage unit management system, the AC/DC rectifier, the DC/DC converter, and the at least one bi-directional adapter.Type: GrantFiled: April 2, 2008Date of Patent: December 31, 2013Assignee: Lockheed Martin CorporationInventors: Toby D. Thomas, James C. Copp, David L. Hoelscher, Lloyd K. Farris
-
Patent number: 8531057Abstract: A power management technique for a power bus includes a method and apparatus employing a Faraday electrical energy sink for a power bus. In general, the technique powers a power bus from a fuel cell plant when the actual voltage of the power bus is less than or equal to a nominal voltage for the power bus and sinks power from the power bus into the fuel cell plant when the actual voltage exceeds the nominal voltage.Type: GrantFiled: August 6, 2009Date of Patent: September 10, 2013Assignee: Lockheed Martin CorporationInventors: Charles F. VanBerg, Jr., David L. Hoelscher
-
Publication number: 20100117591Abstract: A transportable electrical energy storage system includes an electrical energy storage unit, an electrical energy storage unit management system operably associated with the electrical energy storage unit, an AC/DC rectifier operably associated with the electrical energy storage unit management system, and a DC/DC converter operably associated with the electrical energy storage unit management system. The system further includes at least one bi-directional adapter operatively associated with the electrical energy storage unit and a case for protecting the electrical energy storage unit, the electrical energy storage unit management system, the AC/DC rectifier, the DC/DC converter, and the at least one bi-directional adapter.Type: ApplicationFiled: April 2, 2008Publication date: May 13, 2010Inventors: Toby D. Thomas, James C. Copp, David L. Hoelscher, Lloyd K. Farris
-
Publication number: 20100115680Abstract: A body armor includes an armor plate, an electrical energy storage layer conforming to a surface of the armor plate, and a first electrical connector operably associated with the electrical energy storage layer. An armored garment includes a garment, an armor plate operably associated with the garment, an electrical energy storage layer conforming to a surface of the armor plate, and a first electrical connector operably associated with the electrical energy storage layer. A garment includes a body, a first pocket, and an electrical energy storage unit disposed in the first pocket.Type: ApplicationFiled: April 8, 2008Publication date: May 13, 2010Inventors: Toby D. Thomas, David L. Hoelscher
-
Patent number: 6860501Abstract: A weight distributing hitch assembly includes a shank, hitch head, spring bar and lift assembly. The lift assembly is preferably removably mountable to the frame members of a trailer frame while the spring bar extends below the frame members relative to the ground. The lift assembly mounts a hanger assembly which engages a cantilevered segment of the spring bar to drive the spring bar from a free state to a loaded state to distribute the hitch load to a towing vehicle as well as to the trailer. A lever assembly mounts the hanger assembly to the lift assembly and supplies mechanical advantage to assist a user during tensioning of the spring bar. By moving the lever assembly, the cam rotates about a pivot. As the hanger assembly is engaged with the cam, the hanger assembly is driven from a disengaged position to an engaged position which moves the spring bar from its free state to its loaded state with a minimum of user effort.Type: GrantFiled: August 16, 2002Date of Patent: March 1, 2005Assignee: Coquent Towing Products, Inc.Inventors: Kenneth R. Schmidt, Lynn Mida, David L. Hoelscher, Neal Weipert
-
Publication number: 20040084493Abstract: An accessory carrier assembly includes a reversible shank manufactured of a substantially square first portion and a substantially square second portion. The first portion is sized to engage a first hitch receiver and the second portion is sized to engage a second hitch receiver. To attach the accessory carrier to the reversible shank, the first segment is located in amounting assembly either with or without the bushings depending on which type of hitch receiver is available. The accessory carrier is pivotable by removal of a single pin to provide access to a rear of a vehicle. The single pin can be further located in a stop aperture to prevent overrotation of the carrier.Type: ApplicationFiled: June 23, 2003Publication date: May 6, 2004Inventors: David A. Young, Jacob S. Belinky, Gregory D. Richardson, David L. Hoelscher, David A. Watch, Katherine Anne Adams
-
Patent number: 6604658Abstract: An accessory carrier assembly includes a reversible shank manufactured of a substantially square first portion and a substantially square second portion such that the first segment is preferably angled relative to the second segment. The first portion is sized to engage a first hitch receiver and the second portion is sized to engage a second hitch receiver. To attach the accessory carrier to the reversible shank, the first segment is located in amounting assembly either with or without the bushings depending on which type of hitch receiver is available. The accessory carrier can also be pivoted by removal of a single pin. The angle of the reversible shank forms a stop that contacts the accessory carrier to prevent over rotation of the accessory carrier and possible contact with the ground.Type: GrantFiled: September 22, 2000Date of Patent: August 12, 2003Assignee: Metaldyne Company, LLCInventors: David A. Young, David L. Hoelscher, Jacob S. Belinky, David A. Watch, Gregory D. Richardson
-
Patent number: 6588636Abstract: An accessory carrier assembly includes a reversible shank manufactured of a substantially square first portion and a substantially square second portion. The first portion is sized to engage a first hitch receiver and the second portion is sized to engage a second hitch receiver. To attach the accessory carrier to the reversible shank, the first segment is located in amounting assembly either with or without the bushings depending on which type of hitch receiver is available. The accessory carrier is pivotable by removal of a single pin to provide access to a rear of a vehicle. The single pin can be further located in a stop aperture to prevent overrotation of the carrier.Type: GrantFiled: September 22, 2000Date of Patent: July 8, 2003Inventors: David A. Young, David L. Hoelscher, Jacob S. Belinky, David A. Watch, Gregory D. Richardson, Katherine Anne Adams
-
Publication number: 20020190498Abstract: A weight distributing hitch assembly includes a shank, hitch head, spring bar and lift assembly. The lift assembly is preferably removable mountable to the frame members of a trailer frame while the spring bar extends below the frame members relative to the ground. The lift assembly mounts a hanger assembly which engages a cantilevered segment of the spring bar to drive the spring bar from a free state to a loaded state to distribute the hitch load to a towing vehicle as well as to the trailer. A lever assembly mounts the hanger assembly to the lift assembly and supplies mechanical advantage to assist a user during tensioning of the spring bar. By moving the lever assembly, the cam rotates about a pivot. As the hanger assembly is engaged with the cam, the hanger assembly is driven from a disengaged position to an engaged position which moves the spring bar from its free state to its loaded state with a minimum of user effort.Type: ApplicationFiled: August 16, 2002Publication date: December 19, 2002Inventors: Kenneth R. Schmidt, Lynn Mida, David L. Hoelscher, Neal Weipert
-
Patent number: 6003897Abstract: A front suspension and steering mount cradle is disclosed for front-wheel-drive and all-wheel drive motor vehicles which provides improved component packaging, noise isolation, and heat shielding. The cradle includes laterally spaced apart supporting end arches integrally joined by a transversely extending inverted U-section saddle, wherein each arch is defined by an upper section terminating in downwardly diverging front and rear legs. Each front leg ends in a pivot pin fitting for connection to a suspension arm front pivot bushing while each rear leg terminates in a footpad housing connection for a rear bushing fitted on a rearward extending stem of each arm. Each cradle forward leg provides a pedestal bracket for supporting a frame front isolator assembly while each rear footpad supports a frame rear isolator assembly. A pair of upstanding engine mounting flanges on the saddle bight wall insure exact powertrain orientation.Type: GrantFiled: December 1, 1998Date of Patent: December 21, 1999Assignee: Chrysler CorporationInventors: Kenneth W. Dostert, Robert D. Campbell, David L. Hoelscher
-
Patent number: 5997038Abstract: A front suspension and steering mount cradle is disclosed for front-wheel-drive and all-wheel drive motor vehicles which provides improved component packaging, noise isolation, and heat shielding. The cradle includes laterally spaced apart supporting end arches integrally joined by a transversely extending inverted U-section saddle, wherein each arch is defined by an upper section terminating in downwardly diverging front and rear legs. Each front leg ends in a pivot pin fitting for connection to a suspension arm front pivot bushing while each rear leg terminates in a footpad housing connection for a rear bushing fitted on a rearward extending stem of each arm. Each cradle forward leg provides a pedestal bracket for supporting a frame front isolator assembly while each rear footpad supports a frame rear isolator assembly. A pair of upstanding engine mounting flanges on the saddle bight wall insure exact powertrain orientation.Type: GrantFiled: December 1, 1998Date of Patent: December 7, 1999Assignee: Chrysler CorporationInventors: Kenneth W. Dostert, Robert D. Campbell, David L. Hoelscher
-
Patent number: 5879026Abstract: A front suspension and steering mount cradle is disclosed for front-wheel-drive and all-wheel drive motor vehicles which provides improved component packaging, noise isolation, and heat shielding. The cradle includes laterally spaced apart supporting end arches integrally joined by a transversely extending inverted U-section saddle, wherein each arch is defined by an upper section terminating in downwardly diverging front and rear legs. Each front leg ends in a pivot pin fitting for connection to a suspension arm front pivot bushing while each rear leg terminates in a footpad housing connection for a rear bushing fitted on a rearward extending stem of each arm. Each cradle forward leg provides a pedestal bracket for supporting a frame front isolator assembly while each rear footpad supports a frame rear isolator assembly. A pair of upstanding engine mounting flanges on the saddle bight wall insure exact powertrain orientation.Type: GrantFiled: December 19, 1995Date of Patent: March 9, 1999Assignee: Chrysler CorporationInventors: Kenneth W. Dostert, Robert D. Campbell, David L. Hoelscher