Patents by Inventor Robert F. McClanahan
Robert F. McClanahan 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: 9707835Abstract: An improved gas-electric power delivery system is provided. The invention provides an array of internal combustion engine-powered electric generators and an array of electric drive motors wherein each electric drive motor connects to a common shaft. The common shaft of the electric drive motor array connects to a mechanical load of varying power demand. The electric drive motors draw power from a battery in response to demands on the motors by the varying power demands of the external load. The array of electric generators charges the battery and each such generator turns on and off, as needed, to maintain the battery charge in response to demands on the battery by the electric drive motor array. Each electric motor connected to a common shaft in the electric motor array also turns on and off, as needed, to meet the varying power demands of the external load.Type: GrantFiled: May 25, 2012Date of Patent: July 18, 2017Assignee: 3B TECHNOLOGIES IIInventors: Robert D. Washburn, Robert F. McClanahan, Arlene E. McClanahan
-
Publication number: 20120249022Abstract: An improved gas-electric power delivery system is provided. The invention provides an array of internal combustion engine-powered electric generators and an array of electric drive motors wherein each electric drive motor connects to a common shaft. The common shaft of the electric drive motor array connects to a mechanical load of varying power demand. The electric drive motors draw power from a battery in response to demands on the motors by the varying power demands of the external load. The array of electric generators charges the battery and each such generator turns on and off, as needed, to maintain the battery charge in response to demands on the battery by the electric drive motor array. Each electric motor connected to a common shaft in the electric motor array also turns on and off, as needed, to meet the varying power demands of the external load.Type: ApplicationFiled: May 25, 2012Publication date: October 4, 2012Inventors: Robert D. Washburn, Robert F. McClanahan
-
Patent number: 7907073Abstract: The present system provides a method for varying the value of passive components in electronic circuits. Passive components can range from basic resistors, capacitors, and inductors to complex, structures such as transmission lines and resonant cavities. Value selection and variation can either be dynamically performed during circuit operation or as a one-time part of the manufacturing process as determined by the requirements of the specific application. A digital-to-analog converter (DAC) circuit is used to input value selection data digitally, and control value selection with value resolution dependent on the resolution of the DAC. An alternate embodiment is provided for high frequency operation.Type: GrantFiled: April 28, 2009Date of Patent: March 15, 2011Assignee: Dorothy, LLCInventors: Robert D. Washburn, Robert F. McClanahan
-
Publication number: 20090242301Abstract: The present disclosure teaches a fuel efficient method for powering a vehicle. The total peak power requirements for a moving vehicle under a set of performance criteria are divided into at least two subgroups. A primary engine is provided with a size and output to provide for the peak power for one of the at least two subgroups and one or more auxiliary engines or auxiliary engine subsystems are provided with a size and output to provide for up to the peak power for the remaining one or more subgroups.Type: ApplicationFiled: April 1, 2008Publication date: October 1, 2009Inventors: Robert F. McClanahan, Robert D. Washburn
-
Patent number: 7579971Abstract: The present invention is a digital to analog converter circuit that provides significantly lower distortion than achieved by digital to analog converter circuits having comparable speed and resolution utilizing the present art. The present invention provides linear or higher order transitions between clock transition time points rather than step transitions used in the present art. Distortion reduction can exceed 30 dB in the embodiment with linear sample-to-sample transitions and greater in alternate embodiments with non-linear transitions. In other embodiments, the present invention can provide low distortion at resolutions from 16 to 24 bits or more at sample rates typical of high-speed 8-bit devices of the present art.Type: GrantFiled: July 23, 2004Date of Patent: August 25, 2009Inventors: Robert Washburn, Robert F. McClanahan
-
Publication number: 20090207063Abstract: The present system provides a method for varying the value of passive components in electronic circuits. Passive components can range from basic resistors, capacitors, and inductors to complex, structures such as transmission lines and resonant cavities. Value selection and variation can either be dynamically performed during circuit operation or as a one-time part of the manufacturing process as determined by the requirements of the specific application. A digital-to-analog converter (DAC) circuit is used to input value selection data digitally, and control value selection with value resolution dependent on the resolution of the DAC. An alternate embodiment is provided for high frequency operation.Type: ApplicationFiled: April 28, 2009Publication date: August 20, 2009Inventors: ROBERT D. WASHBURN, Robert F. McClanahan
-
Patent number: 7525468Abstract: The present system provides a method for varying the value of passive components in electronic circuits. Passive components can range from basic resistors, capacitors, and inductors to complex, structures such as transmission lines and resonant cavities. Value selection and variation can either be dynamically performed during circuit operation or as a one-time part of the manufacturing process as determined by the requirements of the specific application. A digital-to-analog converter (DAC) circuit is used to input value selection data digitally, and control value selection with value resolution dependent on the resolution of the DAC. An alternate embodiment is provided for high frequency operation.Type: GrantFiled: March 31, 2008Date of Patent: April 28, 2009Inventors: Robert D. Washburn, Robert F. McClanahan
-
Publication number: 20090067614Abstract: The present invention provides termination for transmission line structures propagating common mode signals. Common mode signals typically represent noise in systems wherein information is transmitted as differential mode signals. The present invention terminates the common mode signals in a dynamically matched termination that prevents or significantly reduces reflection of said common signals without interference with differential mode transmission lines or their normal operation. Application is shown for an unshielded, twisted pair transmission line as commonly used in telephony-based systems for both voice and broadband data communication. The methods for application of the present invention to systems with large numbers of conductors are also shown.Type: ApplicationFiled: September 9, 2008Publication date: March 12, 2009Inventors: ROBERT D. WASHBURN, Robert F. McClanahan
-
Patent number: 7430291Abstract: The present invention provides termination for transmission line structures propagating common mode signals. Common mode signals typically represent noise in systems wherein information is transmitted as differential mode signals. The present invention terminates the common mode signals in a dynamically matched termination that prevents or significantly reduces reflection of said common signals without interference with differential mode transmission lines or their normal operation. Application is shown for an unshielded, twisted pair transmission line as commonly used in telephony-based systems for both voice and broadband data communication. The methods for application of the present invention to systems with large numbers of conductors are also shown.Type: GrantFiled: September 2, 2004Date of Patent: September 30, 2008Assignee: Thunder Creative Technologies, Inc.Inventors: Robert D. Washburn, Robert F. McClanahan
-
Publication number: 20080180294Abstract: The present system provides a method for varying the value of passive components in electronic circuits. Passive components can range from basic resistors, capacitors, and inductors to complex, structures such as transmission lines and resonant cavities. Value selection and variation can either be dynamically performed during circuit operation or as a one-time part of the manufacturing process as determined by the requirements of the specific application. A digital-to-analog converter (DAC) circuit is used to input value selection data digitally, and control value selection with value resolution dependent on the resolution of the DAC. An alternate embodiment is provided for high frequency operation.Type: ApplicationFiled: March 31, 2008Publication date: July 31, 2008Inventors: Robert D. Washburn, Robert F. McClanahan
-
Patent number: 7352312Abstract: The present system provides a method for varying the value of passive components in electronic circuits. Passive components can range from basic resistors, capacitors, and inductors to complex, structures such as transmission lines and resonant cavities. Value selection and variation can either be dynamically performed during circuit operation or as a one-time part of the manufacturing process as determined by the requirements of the specific application. A digital-to-analog converter (DAC) circuit is used to input value selection data digitally, and control value selection with value resolution dependent on the resolution of the DAC. An alternate embodiment is provided for high frequency operation.Type: GrantFiled: November 7, 2006Date of Patent: April 1, 2008Inventors: Robert D. Washburn, Robert F. McClanahan
-
Patent number: 7312637Abstract: The present invention is an electronic circuit that significantly enhances timing margin in high-speed, digital memory modules. The circuit is implemented is applicable to all switching waveforms on both control and data signal lines that drive the memory bus. Implementation of the present invention also provides a significant reduction in power dissipation compared to memory modules of comparable size and speed utilizing the present art.Type: GrantFiled: August 17, 2005Date of Patent: December 25, 2007Assignee: Thunder Creative Technologies, Inc.Inventors: Robert D. Washburn, Robert F. McClanahan
-
Patent number: 7260000Abstract: The invention is an electronic circuit designed for incorporation on computer memory modules such as DDR DIMMs. It couples control signals such as address bits, bank selects, enable and even clock signals between the module input connector and the memory devices. The circuit provides low propagation delay, fast rise and fall times with no overshoot or undershoot, and significantly improves timing control compared to memory modules of the present art. Capacitive loading on the motherboard is typically much less than that provided by a single memory device input and is independent of the number of memory devices per bank or the number of banks of memory devices on the memory module. For multiple memory modules connected to the memory bus, capacitive loading is essentially N times the equivalent loading for a single memory module.Type: GrantFiled: May 25, 2006Date of Patent: August 21, 2007Assignee: Thunder Creative Technologies, Inc.Inventors: Robert D. Washburn, Robert F. McClanahan
-
Patent number: 5661647Abstract: Electronic VHF/UHF power conversion circuitry is manufactured using the benefits of low temperature co-fired ceramic substrates to provide interconnection between the discrete components of the power conversion circuit, and integrate various non-semiconductor devices into the body of the low temperature co-fired ceramic structure, such as resistors, capacitors, inductors and transformers. Use of a low temperature co-fired ceramic structure as a substrate on and within which VHF/UHF power conversion circuitry is formed allows selection of various conductive and resistive inks to precisely form interconnection circuitry and selected non-semiconductor components which improves the stability and reduces the cost of VHF/UHF power conversion circuits.Type: GrantFiled: June 7, 1995Date of Patent: August 26, 1997Assignee: Hughes ElectronicsInventors: Robert D. Washburn, Robert F. McClanahan, Andrew A. Shapiro, Ramona G. Pond, Gerald P. Chernicky, William J. Council, Earl H. Martin
-
Patent number: 5604673Abstract: Electronic power conversion circuitry, for frequencies not exceeding 30 MHz, is manufactured using the benefits of low temperature co-fired ceramic substrates to provide interconnection between the discrete components of the power conversion circuit, and integrate various non-semiconductor devices into the body of the low temperature co-fired ceramic structure, such as resistors, capacitors, inductors and transformers. Use of a low temperature co-fired ceramic structure as a substrate on and within which power conversion circuitry is formed allows selection of various conductive and resistive inks to precisely form interconnection circuitry and selected non-semiconductor components which improves the stability and reduces the cost of power conversion circuits.Type: GrantFiled: June 7, 1995Date of Patent: February 18, 1997Assignee: Hughes ElectronicsInventors: Robert D. Washburn, Robert F. McClanahan, Andrew A. Shapiro
-
Patent number: 5532667Abstract: A ferromagnetic material (18,20) in ink or tape form is sinterable using a same firing profile as and has approximately the same thermal shrinkage characteristics as low-temperature-cofired-ceramic (LTCC) tape, and is chemically non-reactive therewith. The ferromagnetic material (18,20) is applied to the surfaces of LTCC tape sheets (12,14,16) to form desired elements such as cores for inductors (22) and transformers and magnetic shields. Ferromagnetic vertical interconnects (vias) (54) can be formed by punching holes (56) through tape sheets (46) and filling them with ferromagnetic ink. The tape sheets (12,14,16) and ferromagnetic elements (18,20) are laminated together and cofired to form an integral structure (10). Ferromagnetic and non-magnetic components (114) can be fabricated separately and inserted into cavities (104a,-106a,108a) in tape sheets (104,106,108) prior to cofiring.Type: GrantFiled: October 11, 1995Date of Patent: July 2, 1996Assignee: Hughes Aircraft CompanyInventors: Carol Haertling, Andrew A. Shapiro, Charles A. Goodman, Ramona G. Pond, Robert D. Washburn, Robert F. McClanahan, Carlos H. Gonzalez, David M. Lusher
-
Patent number: 5438167Abstract: Ferrimagnetic structures formed of ferrimagnetic vias in a unitized multilayer microcircuit structure that is formed of a plurality of co-fired insulating layers.Type: GrantFiled: October 19, 1993Date of Patent: August 1, 1995Assignee: Hughes Aircraft CompanyInventors: Robert F. McClanahan, Robert D. Washburn, Hal D. Smith, Andrew Shapiro
-
Patent number: 5396397Abstract: Unitized multilayer circuit structures including basic substrate insulating layers and dielectric field control layers having dielectric constants different from the dielectric constant of the basic substrate insulating layers.Type: GrantFiled: September 24, 1992Date of Patent: March 7, 1995Assignee: Hughes Aircraft CompanyInventors: Robert F. McClanahan, Robert D. Washburn
-
Patent number: 5384515Abstract: A shrouded pin electrode structure including an elongated pin that extends into the volume of a gas containment structure of an RF excited gas discharge light source and is physically isolated from the discharge gas contained in the volume of the gas containment structure by a shroud structure made for example of a gas impermeable dielectric coating or closed end tube.Type: GrantFiled: November 2, 1992Date of Patent: January 24, 1995Assignee: Hughes Aircraft CompanyInventors: David A. Head, Robert D. Washburn, Robert F. McClanahan
-
Patent number: 5382879Abstract: A fluorescent lighting system that includes a gas containment vessel having an internal phosphor coating and containing an ionizable gas, field concentrator electrodes supported inside or outside the gas containment vessel, and an RF power source coupled directly or capacitively to the field concentrator electrodes.Type: GrantFiled: February 15, 1994Date of Patent: January 17, 1995Assignee: Hughes Aircraft CompanyInventors: William J. Council, Robert F. McClanahan, Robert D. Washburn