Beekman, US
Dennis M. Beekman, Lacrosse, WI US
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20150052921 | SCREW COMPRESSOR DRIVE CONTROL - An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented. | 02-26-2015 |
Dennis M. Beekman, La Crosse, WI US
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20110005251 | Compressor discharge valve providing freeze and charge migration protection - A refrigerant system includes a compressor with a discharge valve that temporarily restricts the compressor's outflow at startup so that the discharge pressure can quickly rise to force lubricant back to the compressor. The discharge valve also helps prevent an axial face of a rotor of a screw compressor from rubbing against a bearing housing axial face of the compressor's housing. When the system turns off under certain low ambient air temperature conditions, the valve closes to help prevent the system's evaporator from freezing up. The discharge valve includes a novel arrangement of a piston, a valve stem extending from the piston, and a valve plug pivotally attached to the valve stem. The pivotal connection ensures a positive seal between the valve plug and a valve seat. A somewhat restricted fluid passageway between the valve's discharge chamber and piston chamber helps prevent the valve from chattering as the valve opens. | 01-13-2011 |
20110041533 | SCREW COMPRESSOR DRIVE CONTROL - An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented. | 02-24-2011 |
20150030489 | Variable Capacity Screw Compressor and Method - A variable capacity screw compressor comprises a suction port, at least two screw rotors and a discharge port being configured in relation to a selected rotational speed that operates at least one screw rotor at an optimum peripheral velocity that is independent of a peripheral velocity of the at least one screw rotor at a synchronous motor rotational speed for a rated screw compressor capacity. A motor is configured to drive the at least one screw rotor at a rotational speed at a full-load capacity that is substantially greater than the synchronous motor rotational speed at the rated screw compressor capacity. A variable speed drive receives a command signal from a controller and generates a control signal that drives the motor at the selected rotational speed. | 01-29-2015 |
20150030490 | Bearing Housing and Assembly of a Screw Compressor - An improved bearing housing of a rotary screw compressor is described. The bearing housing is generally shorter than a convention bearing housing. The bearing housing can be configured to enclose and support radial bearings of the screw compressor. The bearing housing can be configured not to enclose axial bearings of the screw compressor in an axial direction. | 01-29-2015 |
20150337840 | COMPRESSOR - Methods, systems, and apparatuses are disclosed to isolate operation vibration of a compressor to reduce operational sound. A compressor may include an external shell, and one or more isolators that separate a compression mechanism of a compressor from the external shell. The isolator can help isolate the vibration of the compression mechanism from the external shell. The isolator can also support a weight of the compression mechanism. The external shell can also include one or more internal seals. The internal seals can help separate a low-pressure side (e.g., a suction side) and a high-pressure side (e.g., a discharge side) of the compression mechanism. The compressor may also include a pressure balancing mechanism configured to help reduce a pressure difference between, for example, two ends of the compression mechanism, so as to reduce/eliminate the compression mechanism from physical shift in position due to the pressure difference. | 11-26-2015 |
Dennis Myron Beekman, Lacrosse, WI US
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20140216081 | AXIAL THRUST CONTROL FOR ROTARY COMPRESSORS - Systems and methods are used to control operation of a rotary compressor of a refrigeration system to limit or prevent movement of rotors due to axial thrust loading resulting from rapid changes in speed of the rotors of the compressor. The operational profile of the motor is controlled to maintain acceleration torque and deceleration torque within predefined limits. The acceleration torque and deceleration torque are maintained within the predefined limits by controlling the speed of the motor, or by controlling the torque applied by the motor to the rotors during acceleration or deceleration. | 08-07-2014 |
20150318813 | REFRIGERANT COMPRESSOR DRIVES OFFERING ENHANCED ROBUSTNESS, EFFICIENCY AND RATED VOLTAGE OPERABILITY - Apparatuses, methods, and systems offering enhanced robustness, efficiency and rated voltage operability for refrigerant compressor drives are disclosed. An exemplary embodiment is a method of operating a variable frequency drive. The method includes operating the drive over a first operating range to provide at least a desired operating speed and minimize d-axis current, operating the drive over a second operating range including injecting d-axis current to provide at least the desired operating speed, operating the drive over a third operating range at a de-rated speed less than the desired operating speed. In the first operating range the drive input voltage is greater than a first value. In the second operating range the drive input voltage is lower than the first value and greater than a second value. In the third operating range the drive input voltage is lower than the second value. | 11-05-2015 |
Dirk Beekman, Jackson, MI US
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20090200301 | Containers and Container Assemblies - The present invention relates generally to containers for storing and shipping food and, more particularly, pertains to nesting containers and container assemblies. According to one embodiment, a container assembly includes an outer container and an inner container. The outer container includes an outer container wall extending upwardly from an outer container base. The outer container wall transitions into a ledge extending outwardly from the outer container wall. The inner container includes an inner container wall extending from an inner container base and transitioning into a support flange. When the container assembly is assembled, the support flange of the inner container rests upon the ledge of the outer container such that the inner container is removably nested within the outer container. | 08-13-2009 |
Johannes F. Beekman, Austin, TX US
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20110238370 | Methods, Apparatuses and Systems for Automatically Determining the State of a Cluster Tool - Methods, systems, and apparatuses are disclosed for determining the state of a cluster tool. In one embodiment, the method may include receiving status information for one or more modules of a cluster tool. The method may include defining one or more wafer flows through the cluster tool. Each wafer flow through the cluster tool may include one or more wafer flow steps performed by one or more modules. The method may include determining, with a processing device, the states of the one or more wafer flow steps in response to the status information. The method may include determining, with a processing device, the states of the one or more wafer flows in response to the state of the one or more wafer flow steps. The method may include determining the state of the cluster tool in response to the states of the one or more wafer flows. | 09-29-2011 |
Jonathan Beekman, Palo Alto, CA US
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20140207695 | Social Network-Based Fundraising System and Method Thereof - A processor implemented method comprising receiving, from a first coordinator, contact information for each of a first set of potential contributors and creating a first fundraising group. The method further comprises facilitating a payment of a contribution from at least one member of the first fundraising group to a fundraising entity and receiving contact information for each of a second set of potential contributors. The second set of potential contributors is provided by a second coordinator, wherein the second coordinator is included in the first fundraising group, and/or at least one of the second set of potential contributors in response to an invitation from the second coordinator, and creating a second fundraising group. The method further comprises facilitating a payment of a contribution from at least one member of the second fundraising group to the fundraising entity. | 07-24-2014 |
Randall J. Beekman, Dorr, MI US
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20090126497 | Monitoring of Independent Vibrators - In a first embodiment of the present invention a method of monitoring individual vibrators in a pneumatic vibration testing system is disclosed. The method includes providing a pneumatic vibration testing system including at least one vibrator, where each vibrator is connected to a pressurized air system through an output of a valve. Pressurized air is then supplied at a known pressure to an input of the valve. When that air is supplied to the valve the valve releases air in measured bursts to the vibrator and the pressure between the valve and the vibrator is monitored. The pressure between the valve and the vibrator is compared to the known pressure, which indicates if the vibrator is failing or has failed. In preferred embodiments, the testing system includes a plurality of vibrators and an equal plurality of valves, each vibrator is connected to the pressurized air system through a single associated valve. | 05-21-2009 |
20090260444 | APPARATUS AND METHOD FOR VIBRATORY TESTING - A method of operating a vibratory testing apparatus is disclosed including providing a table frame with at least one vibrator attached thereto and attaching the at least one vibrator to a solenoid valve, wherein an input of the solenoid valve is connected to a pneumatic air supply and an output of the valve is connected to the vibrator. The solenoid valve is connected to a controller and a first control signal is sent from the controller to the solenoid valve for opening the valve and allowing a first burst of air to the vibrator thereby causing the vibrator to vibrate the table frame at a first amplitude. Then a second control signal is sent from the controller to the solenoid valve for opening the valve and allowing a second burst of air to the vibrator thereby causing the vibrator to vibrate the table frame at a second amplitude. | 10-22-2009 |
Robert Beekman, Dayton, OH US
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20090178816 | LOADER ELEVATION CONTROL SYSTEM - A system for determining the elevation of a part of an implement, with the implement being attached to the ends of a pair of lift arms of a loader machine, includes a laser transmitter providing a reference beam of laser light. The beam may be a thin beam that is swept in a reference plane, or it may be a pair of fan shaped beams that are continuously rotated. A first beam detector is mounted on one of the pair of lift arms of the loader machine for detecting said reference beam and providing a first output. A second beam detector is mounted on the same lift arm and is spaced along the lift arm from the first beam detector for detecting the reference beam and providing a second output. A control circuit, responsive to the first beam detector and to the second beam detector, determines the elevation of the part of the implement based on the first and second outputs, and provides a projected implement elevation. | 07-16-2009 |
Sicco Beekman, Lawrenceville, NJ US
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20090153079 | BETATRON BI-DIRECTIONAL ELECTRON INJECTOR - A Betatron having a toroidal passageway disposed in a cyclical magnetic field with a main electron orbit circumnavigating the toroidal passageway. Within the toroidal passageway is a first electrode that is spaced apart from a second electrode. The combination of the first electrode and the second electrode define a central space having a first opening and a second opening. A cathode is disposed within the central space. This cathode has a first electron emitter aligned to inject electrons through the first opening and a second electron emitter aligned to inject electrons through the second opening. Electrons injected in a proper direction are accelerated in the main electron orbit. At a time of maximum electron acceleration, the electrons are deflected and impact a target that generates x-rays on impact. | 06-18-2009 |
20120126106 | Neutron Detection Using a Shielded Gamma Detector - A tool having a neutron source, a gamma ray detector, and a photomultiplier tube is provided. The gamma ray detector and the photomultiplier tube are at least partially surrounded by a layer of boron. The tool is used to make measurements, and the number of prompt gamma rays emitted by the boron is determined from the measurements. The number of neutrons detected may be inferred using the determined number of prompt gamma rays. The tool may also have a layer of neutron absorbing material different from boron or a layer of heavy metal at least partially surrounding the boron. The tool may be a logging tool used to delineate a porous formation and to determine its porosity. The tool may have a plurality of gamma ray detector/photomultiplier tube pairs and those pairs may be used to determine a formation hydrogen index and/or a borehole hydrogen index. | 05-24-2012 |
Sicco Beekman, Houston, TX US
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20130134304 | METHOD AND APPARATUS FOR GAIN REGULATION IN A GAMMA DETECTOR - Methods and systems to determine and regulate the gain of gamma-ray detectors in tools equipped with neutron sources are provided. Gain regulation may be based on the gamma ray background generated in the tool by interaction of neutrons with the nuclei of some elements constituting the tool structure. Some chemical elements that are used in construction of the tool's mechanical parts and structure result in characteristic gamma ray lines in a measured energy spectrum. These lines can be used to calibrate the energy scale of the response of the detector, without any added calibration radio isotopic source. | 05-30-2013 |
20130206972 | NEUTRON DETECTION BASED ON A BORON SHIELDED GAMMA DETECTOR - A method is provided to detect neutrons using a boron-shielded gamma-ray detector, which will detect the 0.48-MeV prompt gamma ray due to the | 08-15-2013 |
20140001350 | Gas Detection And Quantification Method Using A Pulsed Neutron Logging Tool | 01-02-2014 |
20140005945 | Method For Estimation Of Borehole And Formation Properties From Nuclear Logging Measurements | 01-02-2014 |
20140339410 | Borehole Fluid Effect Correction For Pulsed Neutron Porosity Measurements - A method for characterizing wellbore response of a pulsed neutron instrument includes inserting a pulsed neutron instrument into a plurality of simulated wellbores each filled with materials representing gas and liquid and measuring response of the pulsed neutron instrument in the simulated wellbores. | 11-20-2014 |
20140343856 | Borehole Fluid Effect Correction For Pulsed Neutron Porosity Measurements - A method for determining formation hydrogen index includes using as input to a computer measurements of numbers of burst gamma rays (gamma rays detected during operation of a pulsed neutron source) and numbers of thermal neutron capture gamma rays made at two different axial spacings from the pulsed neutron source. A ratio of the numbers of burst gamma rays and a ratio of the numbers of thermal neutron capture gamma rays is determined. A corrected ratio of the numbers of thermal neutron capture gamma rays using the ratio of numbers of burst gamma rays is determined. The formation hydrogen index is determined from the corrected ratio. | 11-20-2014 |
Sindy Beekman, Los Angeles, CA US
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20150359356 | Baby Carrier Cover Assembly - A cover assembly for a body-mounted soft structured baby carrier which provides protection from the elements (such as the sun or other elements) via a hood for the baby being carried which has an outer shell configured in the shape of an animal, fantastical creature, video game character, superhero or princess, and is capable of being removably attached or secured to an existing chest-mounted soft structured baby carrier using upper and lower straps which attach to the upper and lower securing straps on the existing body-mounted soft structured baby carrier. | 12-17-2015 |
William A. Beekman, Littleton, CO US
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20110088330 | Abrasive Tool - Abrasive material such as diamonds are transported onto a ferromagnetic tool blank from a suspension of brazing flux and diamonds coated with ferromagnetic material. The tool blank is prepared by coating a receptor site with brazing alloy. A magnetic field is applied to the tool blank, and the coated receptor site is placed in contact with the suspension. The receptor site is heated to brazing temperatures to liquefy the coating, allowing diamonds from the suspension to be transported by magnetism to load the liquefied brazing alloy, forming a matrix at the receptor site. | 04-21-2011 |