Patents by Inventor David Louis Dingmann
David Louis Dingmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10350069Abstract: A chamber assembly for testing a valve includes a proximal chamber portion that defines a proximal interior space, and a distal chamber portion that defines a distal interior space. The distal interior space includes a gas space. When a liquid is inserted into the proximal and distal chambers there is an interface between the liquid and a gas in the gas space. A valve holder is disposed adjacent to the proximal interior space and the distal interior space. The valve holder is configured to receive the valve in a bore of the valve holder. A shortest distance between a center of the valve when in the bore and the interface is at least about 45 mm.Type: GrantFiled: March 8, 2018Date of Patent: July 16, 2019Assignee: TA INSTRUMENTS—WATERS L.L.C.Inventors: David Louis Dingmann, Kyle P. Duffin
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Publication number: 20180193146Abstract: A chamber assembly for testing a valve includes a proximal chamber portion that defines a proximal interior space, and a distal chamber portion that defines a distal interior space. The distal interior space includes a gas space. When a liquid is inserted into the proximal and distal chambers there is an interface between the liquid and a gas in the gas space. A valve holder is disposed adjacent to the proximal interior space and the distal interior space. The valve holder is configured to receive the valve in a bore of the valve holder. A shortest distance between a center of the valve when in the bore and the interface is at least about 45 mm.Type: ApplicationFiled: March 8, 2018Publication date: July 12, 2018Inventors: David Louis Dingmann, Kyle P. Duffin
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Publication number: 20180072976Abstract: A bioreactor system includes a sample chamber capable of receiving a specimen and a cover which can be placed on the chamber to enclose the specimen within the chamber. A first member is movable between (i) a closed position in which the member restricts the cover from being moved away from the chamber in a first direction, and (ii) an open position in which the member does not restrict the cover from being moved away from the chamber. When the first member is in the closed position there is a substantially liquid proof seal between the cover and the chamber.Type: ApplicationFiled: November 17, 2017Publication date: March 15, 2018Inventors: Aaron M. Owens, Stefanie Vawn Biechler, David Louis Dingmann, Charles W. Groepper, Tomas M. Hayes, Chrysanthi Williams
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Patent number: 9913718Abstract: A chamber assembly for testing a valve includes a proximal chamber portion that defines a proximal interior space, and a distal chamber portion that defines a distal interior space. The distal interior space includes a gas space. When a liquid is inserted into the proximal and distal chambers there is an interface between the liquid and a gas in the gas space. A valve holder is disposed adjacent to the proximal interior space and the distal interior space. The valve holder is configured to receive the valve in a bore of the valve holder. A shortest distance between a center of the valve when in the bore and the interface is at least about 45 mm.Type: GrantFiled: March 10, 2015Date of Patent: March 13, 2018Assignee: TA INSTRUMENTS-WATERS L.L.C.Inventors: David Louis Dingmann, Kyle P. Duffin
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Patent number: 9840688Abstract: A bioreactor system includes a sample chamber capable of receiving a specimen and a cover which can be placed on the chamber to enclose the specimen within the chamber. A first member is movable between (i) a closed position in which the member restricts the cover from being moved away from the chamber in a first direction, and (ii) an open position in which the member does not restrict the cover from being moved away from the chamber. When the first member is in the closed position there is a substantially liquid proof seal between the cover and the chamber.Type: GrantFiled: May 14, 2014Date of Patent: December 12, 2017Assignee: TA INSTRUMENTS-WATERS L.L.C.Inventors: Aaron M. Owens, Stefanie Vawn Biechler, David Louis Dingmann, Charles W. Groepper, Tomas M. Hays, Chrysanthi Williams
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Publication number: 20150359634Abstract: A chamber assembly for testing a valve includes a proximal chamber portion that defines a proximal interior space, and a distal chamber portion that defines a distal interior space. The distal interior space includes a gas space. When a liquid is inserted into the proximal and distal chambers there is an interface between the liquid and a gas in the gas space. A valve holder is disposed adjacent to the proximal interior space and the distal interior space. The valve holder is configured to receive the valve in a bore of the valve holder. A shortest distance between a center of the valve when in the bore and the interface is at least about 45 mm.Type: ApplicationFiled: March 10, 2015Publication date: December 17, 2015Applicant: TA INSTRUMENTS-WATERS L.L.C.Inventors: David Louis Dingmann, Kyle P. Duffin
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Publication number: 20150329816Abstract: A bioreactor system includes a sample chamber capable of receiving a specimen and a cover which can be placed on the chamber to enclose the specimen within the chamber. A first member is movable between (i) a closed position in which the member restricts the cover from being moved away from the chamber in a first direction, and (ii) an open position in which the member does not restrict the cover from being moved away from the chamber. When the first member is in the closed position there is a substantially liquid proof seal between the cover and the chamber.Type: ApplicationFiled: May 14, 2014Publication date: November 19, 2015Applicant: TA INSTRUMENTS-WATERS L.L.C.Inventors: Aaron M. Owens, Stefanie Vawn Biechler, David Louis Dingmann, Charles W. Groepper, Thomas M. Hays, Chrysanthi Williams
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Publication number: 20140011170Abstract: An apparatus for controlling fluid flow characteristics includes a fluid conduit for containing a fluid, a first dynamic pump connected to a first portion of the conduit, a second dynamic pump connected to a second portion of the conduit and a controller for operating the first and second dynamic pumps to control dynamic flow of the fluid and dynamic pressure in the fluid in the conduit.Type: ApplicationFiled: July 3, 2012Publication date: January 9, 2014Inventors: Troy D. Nickel, Aaron M. Owens, David Louis Dingmann, Matthew D. Graen, Andrew D. White
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Patent number: 8444935Abstract: A sample testing system includes a plurality of sample tubes, each sample tube coupled to a pumping chamber, a pressure control subsystem and a flow control subsystem. The pressure control system includes a first dynamic pump equipped to induce pulsatile pressure in a mass of pumping fluid coupled to the pumping chambers. The flow control subsystem includes a mean flow pump equipped to generate a flow of sample fluid in a plurality of flow loops. Each of the flow loops conducts the flow of sample fluid between the mean flow pump and one of the sample tubes. The pumping chamber couples pressure from the pumping fluid to the sample fluid.Type: GrantFiled: June 12, 2009Date of Patent: May 21, 2013Assignee: Bose CorporationInventors: Troy D. Nickel, David Louis Dingmann, Mark Hanson
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Patent number: 7966890Abstract: A multi-axis fatigue testing device includes a multi-axis test fixture having a multiple input, multiple output mechanical linkage driven by a plurality of actuators and a controller operating each of the plurality of actuators in real time and in synchronization to produce user-defined multiple fatigue cycle profiles. At least one of the actuators driving the mechanical linkage acts against an artificial load characterized by a stiffness. The stiffness is selected to increase a resonance frequency of the test fixture to allow fatigue testing at higher frequencies for a wider range of samples.Type: GrantFiled: June 25, 2008Date of Patent: June 28, 2011Assignee: Bose CorporationInventors: David Louis Dingmann, Eric Thomas Gagner, Troy D. Nickel, Steven R. Seeman, Andrew D. White
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Publication number: 20100313683Abstract: A sample testing system includes a plurality of sample tubes, each sample tube coupled to a pumping chamber, a pressure control subsystem and a flow control subsystem. The pressure control system includes a first dynamic pump equipped to induce pulsatile pressure in a mass of pumping fluid coupled to the pumping chambers. The flow control subsystem includes a mean flow pump equipped to generate a flow of sample fluid in a plurality of flow loops. Each of the flow loops conducts the flow of sample fluid between the mean flow pump and one of the sample tubes. The pumping chamber couples pressure from the pumping fluid to the sample fluid.Type: ApplicationFiled: June 12, 2009Publication date: December 16, 2010Inventors: Troy D. Nickel, David Louis Dingmann, Mark Hanson
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Patent number: 7694593Abstract: A multi-sample conditioning system may include a sample chamber for each sample or a sample chamber holding one or more samples. Multiple samples enable replication for statistical analysis and individual sample chambers enable individual nutrient flow profiles for each sample. A mechanical imbalance may be created when a sample chamber is removed or when samples of different stiffness are conditioned together. The mechanical imbalance may result in an undesired alteration of the desired conditioning profile and increase the variation in the conditioning profile applied to each sample. An asymmetric-loading support assembly provides a low friction support to reduce the undesired alteration of the desired conditioning profile applied to the samples and reduce unwanted reaction loads on the conditioning drive mechanisms. The asymmetric-loading support assembly preferably includes a flexure as the low-friction, high-stiffness support.Type: GrantFiled: May 13, 2008Date of Patent: April 13, 2010Assignee: Bose CorporationInventors: Aaron M. Owens, David Louis Dingmann, Steven R. Seeman, Troy D. Nickel