Patents by Inventor John W. Mitchell
John W. Mitchell 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: 11204115Abstract: A tubular member for threadably engaging another tubular member to form a tubular string includes a first end including a helical female thread formed in an outer surface of the tubular member, wherein the female thread includes a slot extending radially inwards from the outer surface, and a root extending radially inwards from the slot, wherein the root has a maximum width that is greater than a maximum width of the slot, a second end opposite the first end and including a helical male thread formed on an inner surface of the tubular member, wherein the male thread includes a shank extending radially outwards from the inner surface, and a notch extending radially outwards from the shank, wherein the notch has a maximum width that is greater than a maximum width of the shank.Type: GrantFiled: July 19, 2019Date of Patent: December 21, 2021Assignee: National Oilwell Varco, L.P.Inventor: John W. Mitchell
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Publication number: 20200025318Abstract: A tubular member for threadably engaging another tubular member to form a tubular string includes a first end including a helical female thread formed in an outer surface of the tubular member, wherein the female thread includes a slot extending radially inwards from the outer surface, and a root extending radially inwards from the slot, wherein the root has a maximum width that is greater than a maximum width of the slot, a second end opposite the first end and including a helical male thread formed on an inner surface of the tubular member, wherein the male thread includes a shank extending radially outwards from the inner surface, and a notch extending radially outwards from the shank, wherein the notch has a maximum width that is greater than a maximum width of the shank.Type: ApplicationFiled: July 19, 2019Publication date: January 23, 2020Applicant: National Oilwell Varco, L.P.Inventor: John W. Mitchell
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Patent number: 9258603Abstract: Digital data, including audio and video, may be communicated at increased data rates by utilizing non-data signal channels in cables to communicate additional data. For data transmission, a reformatter receives data in a first format adapted for communication over the data signal channels of a cable. The reformatter may convert the received data into a second format with one or more additional data signals. The reformatter then utilizes non-data signal channels of the cable to carry the additional data signals. An example non-data signal channel may include a clock signal channel, and the reformatter may fold a clock signal into one or more of the data signals to allow for clock recovery downstream. Data may also be split into two or more subsets and each subset encoded separately, for example with two or more data encoders such as legacy HDMI encoders.Type: GrantFiled: February 4, 2014Date of Patent: February 9, 2016Inventors: David Anthony Stelliga, Andrew Joo Kim, John W. Mitchell, Jr.
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Publication number: 20140218608Abstract: Digital data, including audio and video, may be communicated at increased data rates by utilizing non-data signal channels in cables to communicate additional data. For data transmission, a reformatter receives data in a first format adapted for communication over the data signal channels of a cable. The reformatter may convert the received data into a second format with one or more additional data signals. The reformatter then utilizes non-data signal channels of the cable to carry the additional data signals. An example non-data signal channel may include a clock signal channel, and the reformatter may fold a clock signal into one or more of the data signals to allow for clock recovery downstream. Data may also be split into two or more subsets and each subset encoded separately, for example with two or more data encoders such as legacy HDMI encoders.Type: ApplicationFiled: February 4, 2014Publication date: August 7, 2014Inventors: David Anthony Stelliga, Andrew Joo Kim, John W. Mitchell, JR.
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Patent number: 7155377Abstract: The present invention is a system and method for accurately calculating the spatial-temporal effects of a variety of environmental conditions on animal individual, population and community dynamics, given the animal's temperature-dependent behaviors, morphology and physiology, by running integrated microclimate and animal models to calculate the discretionary energy and water available to the animal and its activity time. The methodology requires relatively few, easily measured data to perform the calculations. The microclimate model translates a set of climate and other environmental conditions into a set of microclimate conditions experienced by an animal, given a set of the animal's characteristics. The animal model uses the microclimate conditions data and the set of animal characteristics data to solve for several animal conditions. Further calculations and several display options are available to a user, including spatial-temporal analyses.Type: GrantFiled: August 23, 2001Date of Patent: December 26, 2006Assignee: Wisconsin Alumni Research FoundationInventors: Warren P. Porter, John W. Mitchell
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Publication number: 20030040895Abstract: The present invention is a system and method for accurately calculating the spatial-temporal effects of a variety of environmental conditions on animal individual, population and community dynamics, given the animal's temperature-dependent behaviors, morphology and physiology, by running integrated microclimate and animal models to calculate the discretionary energy and water available to the animal and its activity time. The methodology requires relatively few, easily measured data to perform the calculations. The microclimate model translates a set of climate and other environmental conditions into a set of microclimate conditions experienced by an animal, given a set of the animal's characteristics. The animal model uses the microclimate conditions data and the set of animal characteristics data to solve for several animal conditions. Further calculations and several display options are available to a user, including spatial-temporal analyses.Type: ApplicationFiled: August 23, 2001Publication date: February 27, 2003Applicant: Wisconsin Alumni Research FoundationInventors: Warren P. Porter, John W. Mitchell
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Patent number: 6095426Abstract: A controller for heating, ventilating and air-conditioning distribution systems, which includes feedforward and feedback control strategies. The controller has a feedforward control strategy that generates a control signal based on control set points and identified characteristics of the system, and which adaptively adjusts such set points based on changes that are measured with respect to the identified characteristics. The controller is particularly adapted for controlling the temperature during a heating or cooling operation in a controlled space.Type: GrantFiled: November 7, 1997Date of Patent: August 1, 2000Assignee: Siemens Building TechnologiesInventors: Osman Ahmed, John W. Mitchell, Sanford A. Klein
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Patent number: 6033302Abstract: A controller for heating, ventilating and air-conditioning distribution systems, which includes a feedforward and feedback control strategies. The controller has a feedforward control strategy that generates a control signal based on control set points and identified characteristics of the system, and which adaptively adjusts such set points based on changes that are measured with respect to the identified characteristics. The controller is particularly adapted for controlling the differential air pressure in a controlled space relative to adjacent spaces.Type: GrantFiled: November 7, 1997Date of Patent: March 7, 2000Assignee: Siemens Building Technologies, Inc.Inventors: Osman Ahmed, John W. Mitchell, Sanford A. Klein
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Patent number: 5579993Abstract: A controller implemented in a heating, ventilation and air-conditioning (HVAC) distribution system provides improved control by implementing a general regression neural network to generate a control signal based on identified characteristics of components utilized within the HVAC system. The general regression neural network utilizes past characteristics and desired (calculated) characteristics to generate an output control signal. The general regression neural network is implemented in a feedforward process, which is combined with a feedback process to generate an improved control signal to control components within the HVAC distribution system. Implementation of the general regression neural network is simple and accurate, requires no input from an operator supervising the controller, and provides adaptive, real-time control of components within the HVAC distribution system.Type: GrantFiled: January 6, 1995Date of Patent: December 3, 1996Assignee: Landis & Gyr Powers, Inc.Inventors: Osman Ahmed, John W. Mitchell, Sanford A. Klein
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Patent number: 4703984Abstract: A flexible thin film provides interior miniature conducting contact pads which mesh with the extension pins of a pin grid array to establish a tensioned reliable electrical contact. These contacts each connect to an exterior point which is available for probing even while the pin grid array is inserted in a printed circuit board.Type: GrantFiled: October 28, 1985Date of Patent: November 3, 1987Assignee: Burroughs CorporationInventor: John W. Mitchell, Jr.
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Patent number: 4676564Abstract: A flexible thin film plastic access unit for placement under a pin grid array installed on a printed circuit board. The access unit provides extending exterior flaps having probe-accessible contact pads which connect electrically to each one of the underside pins of the pin grid array and permit identification of each pin that is probed.Type: GrantFiled: October 28, 1985Date of Patent: June 30, 1987Assignee: Burroughs CorporationInventor: John W. Mitchell, Jr.
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Patent number: 4607685Abstract: A heat exchange attachment device for integrated circuits is presented which eliminates any need for contact with adhesive pastes or solder. A snap-on holding piece permits a finned cooling unit to be threaded through an aluminum base plate attached to the pin grid array package so that a threaded shaft of the cooling unit may be screwed into adjustable contact with a beryllium oxide disk mounted on the integrated circuit package.Type: GrantFiled: July 6, 1984Date of Patent: August 26, 1986Assignee: Burroughs CorporationInventor: John W. Mitchell, Jr.
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Patent number: 4561268Abstract: A wall adapter that can be incorporated in a wall that separates a soiled laundry room and a clean laundry room. The adapter is constructed in such a manner that it coacts with the tilting action of a tilt type washer-extractor machine whereby the latter can be utilized in a hospital laundry.Type: GrantFiled: July 2, 1984Date of Patent: December 31, 1985Assignee: G. A. Braun Inc.Inventors: Theron E. Southwick, John W. Mitchell
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Patent number: 4436511Abstract: A dental press or jig for rigidly positioning during a short curing period, a matching pair of dentures held in occlusal alignment with one or both having a contacting layer of relining material pressed against a respective model of the patient's mouth, all clamped together by the press within a body of plaster of Paris. The laterally-open press is formed of a pair of annular plates or disks, vertically spaced apart a constant distance by three, upstanding, peripheral posts which are thus tensioned against opposite faces of the composite workpiece. Each plate is formed with plaster escape-channels leading to catch basins on the outer faces, the basins being defined by a reinforcing pattern of diametric ribs within a peripheral rim which render the plates unbendable under pressure. The assembly may be molded of glass-reinforced terephthalate resin for high tensile and flex resistant properties.Type: GrantFiled: August 26, 1982Date of Patent: March 13, 1984Inventor: John W. Mitchell, Sr.
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Patent number: 4182238Abstract: A transparent, generally cylindrical, wide-mouth pressure retaining vessel or container cast of synthetic resin with a surrounding side wall formed by successively downwardly inset, annular wall segments, and externally reinforced by integral vertical ribs with successive annular edges of the inner stepped face providing support ledges adapted to hold removable shelves upon which freshly cast dentures, acrylic hobby items, pressure-curable art objects, etc. as well as fermentable foodstuff and gas-generating chemicals may be placed for exposure to externally applied and/or internally generated fluid pressure (gas or liquid). Necessity for retention clamps is eliminated by a threadedly mounted closure which carries a manually operable, threaded piston stem disposing a piston in an open-bottom chamber of the cover, which chamber projecting into a container full of liquid causes the latter to fill the piston chamber upon the cover being mounted on the container.Type: GrantFiled: January 23, 1978Date of Patent: January 8, 1980Inventors: John W. Mitchell, Sr., Kenneth H. Oyama, John K. Lawler, deceased, by Doris G. Lawler, executrix
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Patent number: 4164074Abstract: Dental articulator formed with individually adjustable, upper and lower carrier plates, each having means for quick-coupling to one of an interchangeable pair of planar mounts (each mount adapted to adhesively support an assembled denture against one of its faces). A pair of matching dentures can thus be assembled either within or away from the articulator, mounted and tested for occlusion therein, and subsequently reworked (as often as necessary) either within or when removed from the articulator. Essentially a pair of thrust-coupling or threaded attachment means on the carrier plate or on the mount, engage corresponding sockets of the opposite member. Formulation of the mount of inexpensive plastic enables discard after single use.Type: GrantFiled: November 5, 1976Date of Patent: August 14, 1979Assignee: Doris Gene LawlerInventors: John K. Lawler, deceased, John W. Mitchell, Sr., Kenneth H. Oyama
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Patent number: D251681Type: GrantFiled: February 10, 1977Date of Patent: April 24, 1979Inventors: John K. Lawler, deceased, by Doris G. Lawler, executrix, John W. Mitchell, Sr., Kenneth H. Oyama
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Patent number: D251683Type: GrantFiled: January 23, 1978Date of Patent: April 24, 1979Inventors: John W. Mitchell, Sr., Kenneth H. Oyama, John K. Lawler, deceased, by Doris G. Lawler, executrix
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Patent number: D278273Type: GrantFiled: June 2, 1982Date of Patent: April 2, 1985Inventor: John W. Mitchell, Sr.
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Patent number: D279816Type: GrantFiled: June 4, 1982Date of Patent: July 23, 1985Inventor: John W. Mitchell, Sr.