Patents by Inventor David A. Fisher
David A. Fisher 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: 12270412Abstract: A blower comprising a blower housing, a blower wheel, and a motor. The blower wheel is within the blower housing and has a plurality of blades. The motor is operatively connected to the blower wheel to rotate the blower wheel about an axis of rotation. The blower housing comprises a wall perpendicular to the axis of rotation. The wall has a static tap hole having a leading edge and a trailing edge. The static tap hole is positioned near an axial side of the blower wheel such that as the blower wheel rotates, any of the blades of the blower wheel passes the leading edge of the static tap hole before passing the trailing edge of the static tap hole. The wall comprises a protrusion protruding axially from the wall and toward the blower wheel. The protrusion is located adjacent the trailing edge of the static tap hole.Type: GrantFiled: October 6, 2021Date of Patent: April 8, 2025Assignee: Regal Beloit America, Inc.Inventors: Leslie A. Lyons, David A. Fisher
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Patent number: 11835449Abstract: Apparatuses, methods, and systems for generating signatures based on sensing one or more gas concentration conditions are disclosed. One method includes sensing, by one or more sensors, levels of a gas over time for a plurality of gas concentration conditions, receiving, by a controller, the sensed levels of gas over time for the plurality of gas concentration conditions, and generating, by the controller, a plurality of signatures, wherein one or more signatures is generated for one or more gas concentration conditions based on the sensed levels of gas over time, and determining whether to take action or not to take action.Type: GrantFiled: April 30, 2021Date of Patent: December 5, 2023Assignee: Sparrow Detect Inc.Inventors: Eric R. Crosson, David A. Fisher
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Patent number: 11828705Abstract: Apparatuses, methods, and systems for detecting a sample are disclosed. One method includes generating, by a tunable light source, a beam of electro-magnetic radiation, wherein a wavelength of the beam of electro-magnetic radiation is tuned to operate at a plurality of wavelengths. At least a portion of the beam of electro-magnetic radiation is directed to pass through the sample and a reference substance. The system detector is configured to sense at least the portion of the beam of electro-magnetic radiation after passing through the sample and the reference substance. The processor operates to receive information related to intensity or amplitude of the sensed beam of electro-magnetic radiation after passing through the sample and the reference substance and detect an amount of the sample based on the received information related to the intensity or amplitude of the sensed beam of the electro-magnetic radiation.Type: GrantFiled: March 31, 2022Date of Patent: November 28, 2023Assignee: Sparrow Detect, Inc.Inventors: Eric R. Crosson, David A. Fisher
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Publication number: 20230314318Abstract: Apparatuses, methods, and systems for detecting a sample are disclosed. One method includes generating, by a tunable light source, a beam of electro-magnetic radiation, wherein a wavelength of the beam of electro-magnetic radiation is tuned to operate at a plurality of wavelengths. At least a portion of the beam of electro-magnetic radiation is directed to pass through the sample and a reference substance. The system detector is configured to sense at least the portion of the beam of electro-magnetic radiation after passing through the sample and the reference substance. The processor operates to receive information related to intensity or amplitude of the sensed beam of electro-magnetic radiation after passing through the sample and the reference substance and detect an amount of the sample based on the received information related to the intensity or amplitude of the sensed beam of the electro-magnetic radiation.Type: ApplicationFiled: March 31, 2022Publication date: October 5, 2023Applicant: Sparrow Detect, Inc.Inventors: Eric R. Crosson, David A. Fisher
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Publication number: 20230271930Abstract: Processes are described for obtaining highly purified tetrahydrocannabinolic acid (THCa) from Cannabis. Solvent extraction is performed on plant material or extract, followed by removal of impurities using sequential liquid-liquid extractions to purify cannabinoid carboxylic acids therefrom based on chemical properties of carboxylate salts. The product liquor, comprising THCa in solvent, is largely free of impurities, and high in THCa. Further steps can be conducted to obtain a highly enriched solution using chromatography and subsequent crystallization of THCa in 99% purity. THCa can be used as starting material for other products that include THC by decarboxylation. Optionally, triglyceride extraction of a washed aqueous phase can be used to prepare a THCa composition without chromatographic purification. A pre-processing aqueous extraction with pH manipulations may be used to remove biomass prior to solvent extraction, while maintaining THCa and optionally other cannabinoid acids.Type: ApplicationFiled: June 8, 2021Publication date: August 31, 2023Inventors: David A. FISHER, Jason M. ROSE, Andrew FISHER
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Publication number: 20230107170Abstract: A blower comprising a blower housing, a blower wheel, and a motor. The blower wheel is within the blower housing and has a plurality of blades. The motor is operatively connected to the blower wheel to rotate the blower wheel about an axis of rotation. The blower housing comprises a wall perpendicular to the axis of rotation. The wall has a static tap hole having a leading edge and a trailing edge. The static tap hole is positioned near an axial side of the blower wheel such that as the blower wheel rotates, any of the blades of the blower wheel passes the leading edge of the static tap hole before passing the trailing edge of the static tap hole. The wall comprises a protrusion protruding axially from the wall and toward the blower wheel. The protrusion is located adjacent the trailing edge of the static tap hole.Type: ApplicationFiled: October 6, 2021Publication date: April 6, 2023Inventors: Leslie A. Lyons, David A. Fisher
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Publication number: 20210247299Abstract: Apparatuses, methods, and systems for generating signatures based on sensing one or more gas concentration conditions are disclosed. One method includes sensing, by one or more sensors, levels of a gas over time for a plurality of gas concentration conditions, receiving, by a controller, the sensed levels of gas over time for the plurality of gas concentration conditions, and generating, by the controller, a plurality of signatures, wherein one or more signatures is generated for one or more gas concentration conditions based on the sensed levels of gas over time, and determining whether to take action or not to take action.Type: ApplicationFiled: April 30, 2021Publication date: August 12, 2021Applicant: Sparrow Detect, Inc.Inventors: Eric R. Crosson, David A. Fisher
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Patent number: 11022544Abstract: Apparatuses, methods, and systems for generating signatures based on sensing one or more gas concentration conditions are disclosed. One method includes sensing, by one or more sensors, levels of a gas over time for a plurality of gas concentration conditions, receiving, by a controller, the sensed levels of gas over time for the plurality of gas concentration conditions, and generating, by the controller, a plurality of signatures, wherein one or more signatures is generated for one or more gas concentration conditions based on the sensed levels of gas over time, and determining whether to take action or not to take action.Type: GrantFiled: March 20, 2020Date of Patent: June 1, 2021Assignee: Sparrow Detect, Inc.Inventors: Eric R. Crosson, David A. Fisher
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Patent number: 10976248Abstract: Apparatuses, methods, and systems for detecting a substance are disclosed. One system includes a light source, an optical cavity, a cavity detector, and a processor. The light source generates a beam of electro-magnetic radiation, wherein a wavelength of the beam of electro-magnetic radiation is tuned to operate at multiple wavelengths. The optical cavity receives the beam of electro-magnetic radiation, wherein the physical characteristics of the cavity define a plurality of allowed axial-plus-transverse electro-magnetic radiation modes, wherein only a subset of the allowed axial-plus-transverse electro-magnetic radiation modes are excited when the optical cavity receives the beam of electro-magnetic radiation. The cavity detector senses electro-magnetic radiation emanating from the optical cavity.Type: GrantFiled: June 22, 2020Date of Patent: April 13, 2021Assignee: Sparrow Detect, Inc.Inventors: Eric R. Crosson, David A. Fisher
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Publication number: 20200319101Abstract: Apparatuses, methods, and systems for detecting a substance are disclosed. One system includes a light source, an optical cavity, a cavity detector, and a processor. The light source generates a beam of electro-magnetic radiation, wherein a wavelength of the beam of electro-magnetic radiation is tuned to operate at multiple wavelengths. The optical cavity receives the beam of electro-magnetic radiation, wherein the physical characteristics of the cavity define a plurality of allowed axial-plus-transverse electro-magnetic radiation modes, wherein only a subset of the allowed axial-plus-transverse electro-magnetic radiation modes are excited when the optical cavity receives the beam of electro-magnetic radiation. The cavity detector senses electro-magnetic radiation emanating from the optical cavity.Type: ApplicationFiled: June 22, 2020Publication date: October 8, 2020Applicant: Sparrow Detect, Inc.Inventors: Eric R. Crosson, David A. Fisher
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Publication number: 20200250558Abstract: An automated system and method uses a recursive information structure and an intensional incomplete calculus of types to validly characterize anything imaginable; extend applications of automated systems to infinite and incomplete domains; guarantee valid results the absence of complete information; emulate abstraction, generalization, analogy, and other inference rules of human reasoning; execute high performance proofs; simplify application development through increased automation; employ problem solving methods of the human mind, and enable new methods for natural language processing.Type: ApplicationFiled: November 29, 2018Publication date: August 6, 2020Inventor: David A. Fisher
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Patent number: 10724946Abstract: Apparatuses, methods, and systems for detecting a substance are disclosed. One system includes a light source, an optical cavity, a cavity detector, and a processor. The light source generates a beam of electro-magnetic radiation, wherein a wavelength of the beam of electro-magnetic radiation is tuned to operate at multiple wavelengths. The optical cavity receives the beam of electro-magnetic radiation, wherein the physical characteristics of the cavity define a plurality of allowed axial-plus-transverse electro-magnetic radiation modes, wherein only a subset of the allowed axial-plus-transverse electro-magnetic radiation modes are excited when the optical cavity receives the beam of electro-magnetic radiation. The cavity detector senses electro-magnetic radiation emanating from the optical cavity.Type: GrantFiled: March 1, 2018Date of Patent: July 28, 2020Assignee: Sparrow Detect, Inc.Inventors: Eric R. Crosson, David A. Fisher
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Publication number: 20200217787Abstract: Apparatuses, methods, and systems for generating signatures based on sensing one or more gas concentration conditions are disclosed. One method includes sensing, by one or more sensors, levels of a gas over time for a plurality of gas concentration conditions, receiving, by a controller, the sensed levels of gas over time for the plurality of gas concentration conditions, and generating, by the controller, a plurality of signatures, wherein one or more signatures is generated for one or more gas concentration conditions based on the sensed levels of gas over time, and determining whether to take action or not to take action.Type: ApplicationFiled: March 20, 2020Publication date: July 9, 2020Applicant: Sparrow Detect, Inc.Inventors: Eric R. Crosson, David A. Fisher
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Publication number: 20190372769Abstract: A visual code may be used to embed a universal identifier directly into document content. The universal identifier may include a reference to a respective location within a distributed ledger and can be used to retrieve information related to the document including version information, author information, audit information, and signature information.Type: ApplicationFiled: June 3, 2019Publication date: December 5, 2019Inventors: David A. Fisher, David O. Berger
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Publication number: 20190356493Abstract: A smart document includes enhanced metadata and document content. The enhanced metadata may store an embedded database for recording and tracking a document history and rules. The smart document may be hashed to generate a unique document identifier. The unique document identifier is stored in a distributed ledge and paired with exposed metadata for enforcing access rules for the smart document.Type: ApplicationFiled: May 21, 2019Publication date: November 21, 2019Inventors: David A. Fisher, David O. Berger, Jay D. Hull
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Publication number: 20190086329Abstract: Apparatuses, methods, and systems for detecting a substance are disclosed. One system includes a light source, an optical cavity, a cavity detector, and a processor. The light source generates a beam of electro-magnetic radiation, wherein a wavelength of the beam of electro-magnetic radiation is tuned to operate at multiple wavelengths. The optical cavity receives the beam of electro-magnetic radiation, wherein the physical characteristics of the cavity define a plurality of allowed axial-plus-transverse electro-magnetic radiation modes, wherein only a subset of the allowed axial-plus-transverse electro-magnetic radiation modes are excited when the optical cavity receives the beam of electro-magnetic radiation. The cavity detector senses electro-magnetic radiation emanating from the optical cavity.Type: ApplicationFiled: March 1, 2018Publication date: March 21, 2019Applicant: Sparrow Detect, Inc.Inventors: Eric R. Crosson, David A. Fisher
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Patent number: 9618009Abstract: A blower assembly includes a motor including a rotational axis and a housing coupled to the motor. The housing includes an outlet portion configured to discharge an outlet airflow from the housing in a first direction that is substantially perpendicular to the rotational axis. The blower assembly also includes a transition piece coupled to the housing proximate the outlet portion. The transition piece includes a body portion that is configured to direct the outlet airflow in a second direction that is substantially parallel to the rotational axis.Type: GrantFiled: December 30, 2013Date of Patent: April 11, 2017Assignee: Regal Beloit America, Inc.Inventor: David A. Fisher
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Publication number: 20150184662Abstract: A blower assembly includes a motor including a rotational axis and a housing coupled to the motor. The housing includes an outlet portion configured to discharge an outlet airflow from the housing in a first direction that is substantially perpendicular to the rotational axis. The blower assembly also includes a transition piece coupled to the housing proximate the outlet portion.Type: ApplicationFiled: December 30, 2013Publication date: July 2, 2015Applicant: Regal Beloit America, Inc.Inventor: David A. Fisher
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Patent number: 8926619Abstract: A method of surgically preparing a tibia for implantation of a tibial prosthetic component is disclosed.Type: GrantFiled: June 22, 2012Date of Patent: January 6, 2015Assignee: DePuy (Ireland)Inventors: David W. Waite, II, Scott M. Thomas, David C. Pollock, David A. Fisher, J. Bohannon Mason, Duncan G. Young, Matthew S. Wallace, Duncan J. Beedall
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Patent number: 8852197Abstract: An orthopaedic surgical instrument assembly that includes a handle and a keel punch configured to be inserted into a proximal end of a surgically-prepared tibia of a patient. The handle includes a lever configured to secure the keel punch to the handle.Type: GrantFiled: June 22, 2012Date of Patent: October 7, 2014Assignee: DePuy (Ireland)Inventors: David W. Waite, II, Scott M. Thomas, David A. Fisher, David C. Pollock, J. Bohannon Mason, Duncan G. Young, Matthew S. Wallace, Duncan J. Beedall