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Beekman, US
Dennis M. Beekman, La Crosse, WI US
| Patent application number | Description | Published |
|---|---|---|
| 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 |
Dirk Beekman, Jackson, MI US
| Patent application number | Description | Published |
|---|---|---|
| 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
| Patent application number | Description | Published |
|---|---|---|
| 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 |
Randall J. Beekman, Dorr, MI US
| Patent application number | Description | Published |
|---|---|---|
| 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
| Patent application number | Description | Published |
|---|---|---|
| 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
| Patent application number | Description | Published |
|---|---|---|
| 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 |
William A. Beekman, Littleton, CO US
| Patent application number | Description | Published |
|---|---|---|
| 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 |