1
Jane T Malin, Bryan D Basham, Richard A Harris: Discrete event simulation tool for analysis of qualitative models of continuous processing system. The United States of America represented by the Administrator of the National Aeronautics and Space Administration, Russell E Schlorff, John R Manning, Edward K Fein, October 23, 1990: US04965743 (152 worldwide citation)

An artificial intelligence design and qualitative modelling tool is disclosed for creating computer models and simulating therein continuous activities, functions and/or behavior using developed discrete event techniquers. Conveniently, the tool is organized in four modules: library design module, m ...


2
Richard A Harris: Transient blocking apparatus with reset. Bourns, Lumen Patent Firm, August 18, 2009: US07576962 (12 worldwide citation)

A method and apparatus for transient blocking relying on a transient blocking device and a sampling circuit. The transient blocking device has at least one depletion mode n-channel device interconnected with at least one depletion mode p-channel device such that a transient alters a bias voltage Vp ...


3
Richard A Harris, Francois Hebert: Apparatus and method for enhanced transient blocking. FulTec Semiconductor, Lumen Patent Law Firm, March 11, 2008: US07342433 (8 worldwide citation)

An apparatus and method for enhanced transient blocking employing a transient blocking unit (TBU) that uses at least one depletion mode n-channel device interconnected with at least one depletion mode p-channel device. The interconnection is performed such that a transient alters a bias voltage Vp o ...


4
Richard A Harris: Low resistance transient blocking unit. Bourns, Lumen Patent Firm, February 17, 2009: US07492566 (7 worldwide citation)

A transient blocking unit (TBU) having reduced series impedance is provided. A TBU includes two or more depletion mode transistors arranged to provide a low series impedance in normal operation and a high series impedance when the input current exceeds a predetermined threshold. A nonlinear impedanc ...


5
Richard A Harris, Francois Hebert: Apparatus and method for high-voltage transient blocking using low voltage elements. Bourns, Lumen Patent Firm, January 12, 2010: US07646576 (6 worldwide citation)

An apparatus and method for high-voltage transient blocking employing a transient blocking unit (TBU) that has at least one depletion mode n-channel device interconnected with at least one depletion mode p-channel device such that a transient alters a bias voltage Vp of the p-channel device and a bi ...


6
Richard A Harris: Mitigation of current collapse in transient blocking units. Bourns, Lumen Patent Firm, November 10, 2009: US07616418 (4 worldwide citation)

A transient blocking unit (TBU) includes at least two depletion mode transistors connected to each other such that they can rapidly switch from a normal low-impedance state to a high-impedance current blocking state in response to an over-voltage or over-current condition. This behavior makes TBUs u ...


7
Richard A Harris: Flexible secondary overcurrent protection. FulTec Semiconductor, Lumen Patent Firm, May 20, 2008: US07375942 (4 worldwide citation)

A protection system in which a shunt protection device at the interface terminals is optically triggered by sensor components within the circuit. This permits a variety of appropriate overvoltage detection thresholds to be defined at different nodes within the circuit. Preferably the shunt protectio ...


8
Richard A Harris, Stephen Coates, Francois Hebert: Apparatus and method for temperature-dependent transient blocking. FulTec Semiconductor, Lumen Patent Firm, May 6, 2008: US07369387 (3 worldwide citation)

An apparatus and method for temperature-dependent transient blocking employing a transient blocking unit (TBU) that uses at least one depletion mode n-channel device interconnected with at least one depletion mode p-channel device. The interconnection is performed such that a transient alters a bias ...


9
David J Perreault, Arun K Chaudhuri, Roy White, Richard A Harris: Wire guide for electrical discharge machining apparatus. James Theodosopoulos, June 26, 1990: US04937414 (1 worldwide citation)

A wire guide for EDM machining apparatus comprises a vacuum hot pressed titanium diboride block having a groove on a curved side of the block for positioning EDM wire. The block has a mounting hole therethrough lined with an electrically insulating sleeve.


10
Richard A Harris: Surge protection device. Bourns, Lumen Patent Firm, August 3, 2010: US07768761 (1 worldwide citation)

An electrical surge protection device (12) confers protection to an output node (13) from electrical surges on a data or power line (10) incident on an input node (11). A transistorized surge protection device (18) is located in a current path between the input node (11) and the output node (13) and ...