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Henze, US
Chad M. Henze, Granby, CT US
| Patent application number | Description | Published |
|---|---|---|
| 20100065541 | PROPELLER DEICING SYSTEM - Systems and methods of deicing aircraft propellers include a deicing heater timing cycle, i.e. heater on/heater off schedule that is calculated as a function of ambient temperature and the airspeed of the aircraft. | 03-18-2010 |
| 20110158808 | METHOD FOR PROPELLER BLADE ROOT FLOW CONTROL BY AIRFLOW THROUGH SPINNER - A propeller blade root airflow system comprises a spinner for shrouding a propeller hub and propeller roots. The spinner has root holes disposed about a spinner circumference for receiving propeller roots, and airflow ducts disposed about a spinner circumference for drawing air into the spinner and away from the root holes. A method for preventing choked flow conditions between adjacent propeller blades in the area of a spinner in a propulsion system comprises rotating the spinner and propeller blades to produce propulsive thrust by driving an air stream past the propeller blades and spinner, and drawing a portion of the air stream into a plurality of ducts disposed within the spinner to prevent choked flow conditions. | 06-30-2011 |
Christopher P. Henze, Lakeville, MN US
| Patent application number | Description | Published |
|---|---|---|
| 20090243558 | ELECTRONIC BALLAST WITH HOLD-UP ENERGY STORAGE - An electronic ballast is provided, which includes an energy hold-up circuit that maintains operation of an AC discharge load, such as a gas discharge lamp, during at least a portion of a utility source outage. | 10-01-2009 |
| 20090251060 | ELECTRONIC BALLAST SYSTEM WITH LAMP INTERFACE NETWORK - An electronic ballast is provided, which includes first and second output nodes, first and second lamp outputs, and a lamp interface network. The lamp interface network includes an LC circuit coupled between at least one of the first and second output nodes and a respective one of the first and second lamp outputs. | 10-08-2009 |
| 20100073980 | POWER CONVERTER ASSEMBLY WITH ISOLATED GATE DRIVE CIRCUIT - A power converter assembly is provided. The power converter includes at least one switch, a high frequency oscillator coupled to the at least one switch and configured to generate a high frequency waveform based on direct current (DC) power provided thereto, and a power buffer coupled to the at least one switch and the high frequency oscillator and configured to control the operation of the at least one switch based on the high frequency waveform | 03-25-2010 |
| 20100078997 | AUTOMOTIVE ELECTRICAL SYSTEM FOR COUPLING POWER CONVERTERS WITH A TRANSFORMER - Systems and/or apparatus are provided for automotive electrical systems having power converters that are coupled by using a transformer. An electrical system comprises a boost converter, wherein a first winding of a transformer is coupled between the input node of the boost converter and a first reference node. The boost converter further includes a switch coupled between the first reference node and a second reference node and a diode coupled between the first reference node and the output node of the boost converter. An energy source is coupled between the input node and the second reference node and a first electrical load is coupled between the output node and the second reference node. The electrical system further comprises a voltage converter having an input coupled to a second winding of the transformer, and a second electrical load coupled to the output of the voltage converter. | 04-01-2010 |
| 20100102638 | SYSTEMS AND METHODS FOR DISCHARGING BUS VOLTAGE USING SEMICONDUCTOR DEVICES - Systems and methods are provided for discharging a high-voltage bus using semiconductor devices. A discharge system for a first voltage rail and a second voltage rail comprises a first semiconductor device coupled to a first voltage rail and a second semiconductor device coupled between the first semiconductor device and a second voltage rail. A control circuit is coupled to the first semiconductor device and the second semiconductor device. In response to a discharge condition, the control circuit is configured to activate the first semiconductor device and gradually activate the second semiconductor device, such that the energy potential between the first voltage rail and the second voltage rail is gradually dissipated through the semiconductor devices. | 04-29-2010 |
| 20110025248 | MULTI-PHASE DC/DC BOOST CONVERTER - A method and an apparatus are provided for balancing current for each of a plurality of similar phases of a DC/DC boost converter. The method includes the step of measuring a voltage drop of each of the plurality of similar phases at predetermined times by measuring the voltage drop across each phase switching device when current is flowing through the switch. The method also includes the steps of calculating current information for each of the plurality of similar phases in response to the voltage drop measured for each of the plurality of similar phases and balancing current for each of the plurality of similar phases in response to the current information of each of the plurality of similar phases. | 02-03-2011 |
Darrell A. Henze, Collegeville, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20100211081 | Microdrive and Modular Microdrive Assembly for Positioning Instruments in Animal Bodies - Microdrive and modular microdrive assembly for positioning the tips of substantially rigid medical and scientific instruments, such as electrodes, mechanical probes and needles, that are chronically implanted in animals, especially conscious and freely-moving animals, without passing the substantially rigid instruments through tubular guides or using immobilizing stereotactic surgical guide systems, such as arcuate rails mounted on relatively large and unwieldy external surgical headframes. Embodiments of the invention comprise a bottom plate adapted to be surgically attached to the animal and fixedly secured to a frame so that a void in the bottom plate is fixedly disposed over the implantation site. A carriage having a platform for mounting the substantially rigid instrument is alternately lowered and raised by rotating a drive rod connecting the carriage to the frame, enabling precise movement of the tip of the substantially rigid instrument into and out of the animal's body tissue. | 08-19-2010 |
John Henze, Menlo Park, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110032562 | Greenbooks - A computer architecture that integrates desktop productivity applications with various visualization engines and various output engines allowing visualization, modification and formatting of the ultimate output from the application. Methods for accomplishing content visualization, editing and formatting in light of one or more printing option are also provided. Methods and apparatus are also provided for environmentally-friendly printing in booklet form. | 02-10-2011 |
Richard H. Henze, San Carlos, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100101952 | ELECTROPHORETIC CELL AND METHOD EMPLOYING DIFFERENTIAL MOBILITY - An electrophoretic cell and methods of switching an electrophoretic cell and moving charged species in an electrophoretic cell employ differential electrophoretic mobilities and a time-varying electric field. The methods include providing first and second charged species that are oppositely charged and have different mobilities. The method of switching further includes inducing a net motion of both of the charged species using the time-varying applied electric field. The induced net motion results in either the first charged species being moved toward the electrode and the second charged species remaining essentially motionless or both of the charged species being moved toward the same electrode. The electrophoretic cell includes the first and second charged species with opposite charge and different mobilities, and further includes the time-varying applied electric field that provides the net motion of the charged species. | 04-29-2010 |
Tom Henze, Highland Lakes, NJ US
| Patent application number | Description | Published |
|---|---|---|
| 20110175272 | Clamp For Joining Work Pieces - A clamp for maintaining tight physical contact between two workpieces is disclosed. Using a pocket hole in one workpiece, the clamp includes a rod or pin which engages that workpiece. The second workpiece is either maintained in position by a resilient bumper which is clamped thereon, or by a threaded screw bolt which engages the other workpiece and drives the two together between the screw bolt and pin. | 07-21-2011 |