Patents by Inventor Carl Crawford
Carl Crawford 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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Publication number: 20200397667Abstract: The present disclosure describes a delivery device. The delivery device of the present disclosure can include one or more pullout resistors that can anchor the delivery device to the patient's abdomen. The pullout resistors can reduce feeding tube migration. The delivery device can include pullout resistors that anchor the delivery device with the abdomen rather than inflatable bumpers or balloons that can obstruct the intestine. When implanted, the pullout resistors can lie between the small intestine and intraabdominal wall. The pullout resistors can prevent inadvertent retrograde displacement of the delivery device without obstructing the lumen of the intestine. The pullout resistors can be flexible to enable a healthcare professional to apply an external retraction force to remove the delivery device.Type: ApplicationFiled: February 14, 2019Publication date: December 24, 2020Applicant: Cornell UniversityInventors: Rasa Zarnegar, Thomas Ciecierega, Carl Crawford, Brendan Finnerty, Thomas Fahey, III
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Patent number: 9874381Abstract: A vapor compression refrigeration cycle system includes a compressor and an electronic expansion valve connected between first and second refrigerant ports of a compressor. An expansion valve controller is configured to control a flow of refrigerant through the expansion valve in response to a superheat temperature of the refrigerant. The controller is configured to execute a first control algorithm until a local maximum of the superheat temperature occurs, and then to execute a second control algorithm.Type: GrantFiled: September 2, 2015Date of Patent: January 23, 2018Assignee: Lennox Industries Inc.Inventors: Yi Qu, Carl Crawford
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Publication number: 20170024344Abstract: Systems and methods for reserving bandwidth in a USB hub are disclosed. The systems and methods may include receiving data from at least one downstream endpoint in a buffer, identifying a current capacity of the buffer, comparing the current capacity of the buffer to a buffer threshold, generating an output based at least on the comparison, based at least on the output, dynamically throttling at least one low-throughput endpoint, and allocating a predefined bandwidth to a USB device that has a predetermined bandwidth requirement by providing bandwidth to the USB device available from the throttle of the at least one low-throughput endpoints.Type: ApplicationFiled: July 21, 2016Publication date: January 26, 2017Applicant: Microchip Technology IncorporatedInventors: Santosh Shetty, Akhlesh Nigam, Carl Crawford
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Publication number: 20160324489Abstract: A portable CT scanner may include a rotatable frame with separable portions. An x-ray source may be coupled to one portion of the rotatable frame, and an x-ray detector may be coupled to another portion of the rotatable frame. During storage and transportation, one portion of the rotatable frame may be housed in a first enclosure, and another portion of the rotatable frame may be housed in a second enclosure. When operation of the scanner is desired, the two enclosures may be connected, and/or the rotatable frame portions may be connected with the enclosures abutting one another, to allow for rotation of the rotatable frame about an aperture formed by the enclosures.Type: ApplicationFiled: July 18, 2016Publication date: November 10, 2016Inventors: Carl Crawford, Dale Fox, Carlos Camara, Aldis Rauda
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Patent number: 9420977Abstract: A portable CT scanner may include a rotatable frame with separable portions. An x-ray source may be coupled to one portion of the rotatable frame, and an x-ray detector may be coupled to another portion of the rotatable frame. During storage and transportation, one portion of the rotatable frame may be housed in a first enclosure, and another portion of the rotatable frame may be housed in a second enclosure. When operation of the scanner is desired, the two enclosures may be connected, and/or the rotatable frame portions may be connected with the enclosures abutting one another, to allow for rotation of the rotatable frame about an aperture formed by the enclosures.Type: GrantFiled: March 19, 2014Date of Patent: August 23, 2016Assignee: Tribogenics, Inc.Inventors: Carl Crawford, Dale Fox, Carlos Camara, Aldis Rauda
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Publication number: 20150377530Abstract: A vapor compression refrigeration cycle system includes a compressor and an electronic expansion valve connected between first and second refrigerant ports of a compressor. An expansion valve controller is configured to control a flow of refrigerant through the expansion valve in response to a superheat temperature of the refrigerant. The controller is configured to execute a first control algorithm until a local maximum of the superheat temperature occurs, and then to execute a second control algorithm.Type: ApplicationFiled: September 2, 2015Publication date: December 31, 2015Applicant: Lennox Industries Inc.Inventors: Yi QU, Carl CRAWFORD
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Patent number: 9151526Abstract: A vapor compression refrigeration cycle system includes a compressor and an electronic expansion valve connected between first and second refrigerant ports of a compressor. An expansion valve controller is configured to control a flow of refrigerant through the expansion valve in response to a superheat temperature of the refrigerant. The controller is configured to execute a first control algorithm until a local maximum of the superheat temperature occurs, and then to execute a second control algorithm.Type: GrantFiled: December 22, 2011Date of Patent: October 6, 2015Assignee: Lennox Industries Inc.Inventors: Yi Qu, Carl Crawford
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Publication number: 20150265225Abstract: A portable CT scanner may include a rotatable frame with separable portions. An x-ray source may be coupled to one portion of the rotatable frame, and an x-ray detector may be coupled to another portion of the rotatable frame. During storage and transportation, one portion of the rotatable frame may be housed in a first enclosure, and another portion of the rotatable frame may be housed in a second enclosure. When operation of the scanner is desired, the two enclosures may be connected, and/or the rotatable frame portions may be connected with the enclosures abutting one another, to allow for rotation of the rotatable frame about an aperture formed by the enclosures.Type: ApplicationFiled: March 19, 2014Publication date: September 24, 2015Applicant: TRIBOGENICS, INC.Inventors: Carl Crawford, Dale Fox, Carlos Camara, Aldis Rauda
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Publication number: 20130160474Abstract: A vapor compression refrigeration cycle system includes a compressor and an electronic expansion valve connected between first and second refrigerant ports of a compressor. An expansion valve controller is configured to control a flow of refrigerant through the expansion valve in response to a superheat temperature of the refrigerant. The controller is configured to execute a first control algorithm until a local maximum of the superheat temperature occurs, and then to execute a second control algorithm.Type: ApplicationFiled: December 22, 2011Publication date: June 27, 2013Applicant: Lennox Industries Inc.Inventors: Yi Qu, Carl Crawford
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Publication number: 20100186458Abstract: Method and apparatus for a novel apparatus to perform the task of washing and drying laundry in one machine is described within. There have been many attempts to create a practical combination laundry machine because the space and potential time savings to have all of the processes happen within one machine is beneficial. The problem created with most previous attempts is a machine that is sized for a wash load which will not properly dry the clothes in less time than a traditional two machine system. The underlying issue is the fact that a properly sized machine for washing is considerably smaller in internal volume than a dryer with the same load capacity. This invention uses a basket which has the capability to change the basket volume to maintain the proper ratio for both washing and drying cycles.Type: ApplicationFiled: January 19, 2010Publication date: July 29, 2010Inventors: Andrew Kegler, Carl Crawford
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Publication number: 20100078559Abstract: A method of detecting radiation through which the residence time of charge carriers is dramatically reduced by an external optical energy source and the occupancy of the deep-level defects is maintained close to the thermal equilibrium of the un-irradiated device even under high-flux exposure conditions. Instead of relying on thermal energy to release the trapped carriers, infra-red light radiation is used to provide sufficient energy for the trapped carriers to escape from defect levels. Cd1-xZnxTe crystals are transparent to infra-red light of this energy and no additional absorption occurs other than the one associated with the ionization of the targeted deep-level defects. This allows irradiation geometry from the side source of the Cd1-xZnxTe detector crystals.Type: ApplicationFiled: September 25, 2009Publication date: April 1, 2010Inventors: Csaba Szeles, Michael Prokesch, Derek Bale, Bruce Glick, Carl Crawford
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Publication number: 20070255885Abstract: System and method for switching logic in a Universal Serial Bus hub. The USB hub may include upstream logic and downstream logic for sending and receiving information from a host controller and a USB device respectively. The USB hub may include a plurality of ports operable to couple to a plurality of devices, including a first port coupled to the upstream logic and a second port coupled to the downstream logic. The USB hub may also include switching logic operable to switch the upstream and the downstream logic with respect to the first port and the second port respectively. The switching logic may switch the upstream and downstream logic by decoupling the first port from the upstream logic, decoupling the second port from the downstream logic, and coupling the second port to the upstream logic. Additionally, the first port may be coupled to the downstream logic.Type: ApplicationFiled: April 27, 2006Publication date: November 1, 2007Inventors: Mark Bohm, Donald Perkins, Carl Crawford
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Publication number: 20070031036Abstract: A method of and a system for identifying objects using histogram segment features from multi-energy CT images are provided. The multi-energy CT images include a CT image, which approximates density measurements of scanned objects, and a Z image, which approximates effective atomic number measurements of scanned objects. The method comprises: computing a density histogram for each potential threat object; smoothing the density histogram using a low-pass filter; identifying peaks in the smoothed density histogram; assigning a segment to each peak; computing histogram segment features for each segment; classifying each potential threat object into a threat or a non-threat using computed features.Type: ApplicationFiled: August 4, 2005Publication date: February 8, 2007Inventors: Ram Naidu, Zhengrong Ying, Sergey Simanovsky, Matthew Hirsch, Carl Crawford
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Publication number: 20070014472Abstract: A method of and a system for identifying objects using local distribution features from multi-energy CT images are provided. The multi-energy CT images include a CT image, which approximates density measurements of scanned objects, and a Z image, which approximates effective atomic number measurements of scanned objects. The local distribution features are first and second order statistics of the local distributions of the density and atomic number measurements of different portions of a segmented object. The local distributions are the magnitude images of the first order derivative of the CT image and the Z image. Each segmented object is also divided into different portions to provide geometrical information for discrimination.Type: ApplicationFiled: July 18, 2005Publication date: January 18, 2007Inventors: Zhengrong Ying, Ram Naidu, Sergey Simanovsky, Matthew Hirsch, Carl Crawford
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Publication number: 20070014471Abstract: A method of and a system for splitting a compound object using multi-energy CT data including a density and an atomic number measurements are provided. The method comprises: compound object detection; computing a two-dimensional DZ distribution of a compound object; identifying clusters within the DZ distribution; assigning a component label to each object voxel based on the DZ distribution clusters; and post-processing the set of voxels identified as belonging to each component.Type: ApplicationFiled: July 18, 2005Publication date: January 18, 2007Inventors: Sergey Simanovsky, Zhengrong Ying, Carl Crawford
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Publication number: 20060274066Abstract: A method of and a system for displaying volumetric multi-energy CT images are disclosed, wherein a CT image, a Z image, and a label image from an automatic explosive detection are provided, are disclosed. The method comprises generating an index image through a nonlinear transformation of the CT image, the Z image, and the label image, rotating and coloring the index image as desired, and rendering and displaying the rotated and colored image.Type: ApplicationFiled: June 1, 2005Publication date: December 7, 2006Inventors: Zhengrong Ying, Matthew Hirsch, Purvin Desai, Kyle Guilbert, Sergey Simanovsky, Carl Crawford
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Publication number: 20060072703Abstract: A method of and a system for stabilizing High Voltage Power Supply (HVPS) DC and AC voltages in multi-energy X-ray computed tomography scanners are provided. The method comprises generating filter ratios, computing DC and AC voltages, and feeding back the computed DC and AC voltages to the commanded voltages. The filtered ratios including an air ratio and a copper ratio are modeled as nonlinear functions of the DC and AC voltages. Computing DC and AC voltages include computing an m-ratio and an n-ratio. The parameters of the nonlinear model comprise an exponent parameter and a set of polynomial coefficients. The parameters are determined by a calibration procedure, which performs scanning at different combination of DC and AC voltages. The optimal parameters are obtained through a nonlinear least square minimization, which is solved through a brute force search over the exponent parameter and a closed form solution of the polynomial coefficients.Type: ApplicationFiled: October 5, 2004Publication date: April 6, 2006Inventors: Ram Naidu, Zhengrong Ying, Carl Crawford
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Publication number: 20060039599Abstract: A method of and a system for detecting anomalies in projection images generated by CT scanners are provided. One type of anomaly of particular interest is bright or/and dark dots in projection images, which correspond to streak artifacts in the CT images. The method for detecting such bright or/and dark dots in projection images comprises: generating projection images; computing a CFAR distance map; computing a preliminary dot map; generating dot histograms; and detecting bright dots or/and dark dots based on the generated histograms.Type: ApplicationFiled: August 18, 2004Publication date: February 23, 2006Inventors: Anton Deykoon, Zhengrong Ying, Carl Crawford
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Publication number: 20060023844Abstract: A method of and a system for spectral correction in multi-energy computed tomography are provided to correct reconstructed images, including high-energy CT images and Z (effective atomic number) images, for spectral variations, which include time variations on a scanner due to HVPS drift and scanner to scanner variations due to the beamline component differences. The method uses a copper filter mounted on the detector array for tracking the spectral changes. The method comprises: generating copper ratios; computing working air tables; calculating scales and offsets; and correcting high-energy CT images and Z images using calculated scales and offsets. The method further includes an off-line calibration procedure to generate necessary parameters for the online correction.Type: ApplicationFiled: July 27, 2004Publication date: February 2, 2006Inventors: Ram Naidu, Zhengrong Ying, Chitra Subramanian, Sergey Simanovsky, Carl Crawford
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Publication number: 20060002585Abstract: A method of and a system for sharp object detection using computed tomography images are provided. The method comprises identifying voxels corresponding to individual objects; performing eigen-analysis and generating eigen-projection of an identified object; computing an axial concavity ratio of the identified object; computing a pointness measurement of the identified object; computing a flat area of the identified object; calculating a sharpness score of the identified object; and declaring the identified object as a threat if the sharpness score is greater than a pre-defined threshold.Type: ApplicationFiled: July 1, 2004Publication date: January 5, 2006Inventors: Gregory Larson, Sergey Simanovsky, Zhengrong Ying, Carl Crawford