Peter Schaefer
Peter Schaefer, Waldbrunn-Lahr DE
Peter Schaefer, Waldbrunn DE
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20100278582 | ELECTRIC TOOTHBRUSH - Disclosed is an electric toothbrush ( | 11-04-2010 |
Peter Schaefer, Grob Kreutz Brb DE
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20100163718 | METHOD AND APPARATUS FOR INCREASING THE EFFICIENCY OF A FLUORESCENCE MEASUREMENT CELL - An apparatus for estimating a property of a fluid in an earth formation, the apparatus including: a logging instrument configured to be conveyed in a borehole penetrating the formation; and a plurality of light sources disposed at the logging instrument; wherein each of the light sources is configured to illuminate a sample of the fluid with a light beam causing the sample to fluoresce light with a characteristic related to the property, each of the light sources being configured to provide a light beam with a solid angle and a distance traveled to the sample, the solid angle and the distance being configured to concentrate the beam at an area of the sample that is overlapped substantially a same amount by a beam from another light source in the plurality. | 07-01-2010 |
Peter Schaefer, Grob Kreutz DE
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20090078860 | SYSTEM AND METHOD FOR DOWNHOLE OPTICAL ANAYSIS - A method is disclosed for measuring optical properties of a fluid downhole, the method comprising measuring intensity of light interacting with the fluid downhole for each of one or more wavelengths; integrating each intensity of light for each wavelength for an integration time; and estimating the optical property from a difference between a starting value and an ending value for the integral of the intensity of light over time divided by the integration time for the wavelength. An apparatus is disclosed for measuring an optical property of a fluid downhole, the apparatus comprising one or more photodiodes that measure an intensity of light interacting with the fluid downhole for each of one or more wavelengths; and one or more integration circuits that each integrates an intensity of light for one wavelength for an integration time. | 03-26-2009 |
20100025112 | IN-SITU REFRACTION APPARATUS AND METHOD - An apparatus and method for estimating a fluid property downhole includes an electromagnetic energy emitter, a window having an input interface that receives electromagnetic energy emitted from the electromagnetic energy emitter and converges the electromagnetic energy entering the window, a fluid interface and an output interface. A detector detects electromagnetic energy exiting the window from the output interface. | 02-04-2010 |
20100148785 | APPARATUS AND METHOD FOR EVALUATING DOWNHOLE FLUIDS - An apparatus for evaluating downhole fluids is disclosed. The apparatus includes: an optical block having an adjustable opening that receives electromagnetic energy emitted by an electromagnetic energy source; a controller operatively associated with the optical block for adjusting the opening size, wherein the opening size is adjusted at least in part based on one or more estimated downhole parameters; and a sensor that receives the electromagnetic energy emitted by the electromagnetic energy source after the emitted electromagnetic energy interacts with a downhole fluid. A method for evaluating downhole fluids is also disclosed. | 06-17-2010 |
20130019673 | VISCOSITY MEASUREMENT IN A FLUID ANALYZER SAMPLING TOOL - An apparatus for estimating a viscosity or density of a fluid downhole includes a carrier configured to be conveyed through a borehole penetrating the earth. A pump is disposed at the carrier and configured to pump the fluid. A flow restriction element is configured to receive a flow of the fluid pumped by the pump and to reduce pressure of the fluid flowing through the flow restriction element. A sensor is configured to measure a differential pressure across the flow restriction element and to provide an output that is used to estimate the viscosity or density. | 01-24-2013 |
Peter Schaefer, Knittlingen DE
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20110108540 | Method for Supplying Current to a Glow Plug - The invention relates to a method for supplying current to a glow plug in a running diesel engine after reaching the operating temperature thereof by a series of current pulses, wherein a piston of the engine carries out a work cycle comprising several strokes and the glow plug is supplied with current as a function of the strokes of the work cycle such that the electric current supplied in each work cycle is mainly supplied at a predetermined, steady stroke of the piston, wherein control time intervals that follow each other are defined, during which up to two switching processes can be triggered by a control device, by which the glow plug can be connected to a voltage source for creating a current pulse or can be disconnected from the voltage source for ending a current pulse. According to the invention, the control time intervals have a duration that can be varied by the control device as a function of the rotational speed of the engine. | 05-12-2011 |
20120274343 | Method for Measuring the Electrical Resistance of a Glow Plug - The invention relates to a method for measuring the electrical resistance of a glow plug, wherein a test current is set by closed-loop control to a constant value using a constant-current source, and is directed through the plug. A value of the electrical resistance of the glow plug is determined by evaluating a feedback signal of the constant-current source. | 11-01-2012 |
Peter Schaefer, Schramberg DE
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20110210106 | Method For Laser Fusion Cutting Without Cutting Gas - A method for laser fusion cutting of a metal workpiece including applying a laser beam to the workpiece, where a kerf is melted in the workpiece by the laser beam and a laser beam diameter in a working point is configured to expel molten material from the kerf without cutting gas. | 09-01-2011 |
Peter Schaefer, Bretten DE
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20110284521 | Method for Operating a Diesel Fuel Filter Heater - The invention relates to a method for operating a diesel fuel filter heater comprising at least one PTC element, in a motor vehicle. According to the invention, a glow plug control device is used to generate an effective voltage from a vehicle system voltage using pulse width modulation, which is then applied at the filter heater. | 11-24-2011 |
Peter Schaefer, Gross Kreutz Brb DE
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20120266668 | Surface Wave Sensor for Downhole Applications - The present disclosure relates to an apparatus and method for estimating a parameter of interest in a downhole fluid using a fluid analysis module. The fluid analysis module may include: a first transducer configured to generate a surface wave in a fluid. The first transducer may include one or more of: a piezoelectric crystal, a electromagnetic transducer, and a surface acoustic wave crystal. The apparatus may use the first transducer or a second transducer to generate a signal indicative of the dissipation of the surface wave in the fluid. The apparatus may include a compensator configured to reduce mechanical pressure on the transducer. The method may include estimating a parameter of interest of the fluid using a signal indicative of the dissipation of the surface wave. | 10-25-2012 |
Peter Schaefer, Brownstown, MI US
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20140357439 | PULLEY RING - A structural or support ring for an overmolded pulley, the ring placed between a bearing and outer radial surface of the pulley, providing structural support across a width of the pulley. | 12-04-2014 |
Peter Schaefer, Ottersheim DE
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20160002189 | PROCESS FOR THE PREPARATION OF SUBSTITUTED OXIRANES AND TRIAZOLES - The present invention relates to a process for the preparation of the compounds II | 01-07-2016 |