Patents by Inventor Steven John McCoy
Steven John McCoy 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: 10367612Abstract: A two-wire process variable transmitter for use in an industrial process includes a process variable sensor configured to sense a process variable of a process fluid of the industrial process. Output circuitry provides an output on a two-wire process control loop which is related to the sensed process variable. Terminal voltage measurement circuitry measures a voltage at terminals of the process variable transmitter. The terminal voltage is a voltage measured across an electrical connection of the two-wire process variable transmitter to the two-wire process control loop. A microprocessor performs loop diagnostics on the two-wire process control loop based upon a loop current and the measured terminal voltage. The microprocessor determines coefficients of a polynomial equation which relates loop current and terminal voltage during normal operation of the two-wire process variable transmitter and performs subsequent diagnostics based upon the coefficients of the polynomial.Type: GrantFiled: September 30, 2015Date of Patent: July 30, 2019Assignee: ROSEMOUNT INC.Inventors: Steven John McCoy, David Richard Lauzon
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Patent number: 10324055Abstract: A process variable transmitter for use in an industrial process includes a housing having a cavity formed therein. The housing has a barrier which divides the cavity into first and second cavities. Measurement circuitry in the first cavity is configured to measure a process variable of the industrial process. A terminal block assembly is located in the second cavity. A moisture sensor has an electrical characteristic which changes based upon the presence of moisture in the second cavity.Type: GrantFiled: September 30, 2015Date of Patent: June 18, 2019Assignee: ROSEMOUNT INC.Inventor: Steven John McCoy
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Patent number: 10320535Abstract: A two-wire process variable transmitter for use in an industrial process includes a process variable sensor configured to sense a process variable of a process fluid of the industrial process. Output circuitry provides an output on a two-wire process control loop which is related to the sensed process variable. Terminal voltage measurement circuitry measures a voltage at terminals of the process variable transmitter. The terminal voltage is a voltage measured across an electrical connection of the two-wire process variable transmitter to the two-wire process control loop. A microprocessor performs loop diagnostics on the two-wire process control loop based upon a loop current and the measured terminal voltage. The microprocessor determines coefficients of a polynomial equation which relates loop current and terminal voltage during normal operation of the two-wire process variable transmitter and performs subsequent diagnostics based upon the coefficients of the polynomial.Type: GrantFiled: September 30, 2015Date of Patent: June 11, 2019Assignee: ROSEMOUNT INC.Inventors: Steven John McCoy, David Richard Lauzon
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Patent number: 10015899Abstract: A process variable transmitter for use in an industrial process includes a housing having a cavity formed therein. The housing has a barrier which divides the cavity into first and second cavities. Preferably, measurement circuitry in the first cavity is configured to measure a process variable of the industrial process. A terminal block assembly is positioned in the second cavity. The terminal block assembly forms a seal with the housing thereby forming a third cavity between the barrier and a circuit board of the terminal block assembly.Type: GrantFiled: June 29, 2015Date of Patent: July 3, 2018Assignee: Rosemount Inc.Inventors: George Charles Hausler, Steven John McCoy, Christopher Lee Eriksen, Jeffrey Alan Cota
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Publication number: 20170093533Abstract: A two-wire process variable transmitter for use in an industrial process includes a process variable sensor configured to sense a process variable of a process fluid of the industrial process. Output circuitry provides an output on a two-wire process control loop which is related to the sensed process variable. Terminal voltage measurement circuitry measures a voltage at terminals of the process variable transmitter. The terminal voltage is a voltage measured across an electrical connection of the two-wire process variable transmitter to the two-wire process control loop. A microprocessor performs loop diagnostics on the two-wire process control loop based upon a loop current and the measured terminal voltage. The microprocessor determines coefficients of a polynomial equation which relates loop current and terminal voltage during normal operation of the two-wire process variable transmitter and performs subsequent diagnostics based upon the coefficients of the polynomial.Type: ApplicationFiled: September 30, 2015Publication date: March 30, 2017Inventors: Steven John McCoy, David Richard Lauzon
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Publication number: 20170089856Abstract: A process variable transmitter for use in an industrial process includes a housing having a cavity formed therein. The housing has a barrier which divides the cavity into first and second cavities. Measurement circuitry in the first cavity is configured to measure a process variable of the industrial process. A terminal block assembly is located in the second circuitry. A moisture sensor has an electrical characteristic which changes based upon the presence of moisture in the second cavity.Type: ApplicationFiled: September 30, 2015Publication date: March 30, 2017Inventor: Steven John McCoy
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Publication number: 20160381822Abstract: A process variable transmitter for use in an industrial process includes a housing having a cavity formed therein. The housing has a barrier which divides the cavity into first and second cavities. Preferably, measurement circuitry in the first cavity is configured to measure a process variable of the industrial process. A terminal block assembly is positioned in the second cavity. The terminal block assembly forms a seal with the housing thereby forming a third cavity between the barrier and a circuit board of the terminal block assembly.Type: ApplicationFiled: June 29, 2015Publication date: December 29, 2016Inventors: George C. Hausler, Steven John McCoy, Christopher Lee Eriksen, Jeffrey Alan Cota
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Patent number: 8315058Abstract: A display assembly includes a transparent cover piece, a display shroud having a contact structure arranged to face the transparent cover piece, an interface subassembly mounted on the display shroud, an electronics board shroud having a support member and a connection feature, and a biasing member operably engaged between the display shroud and the electronics board shroud. The connection feature mechanically connects the electronics board shroud to the display shroud while permitting axial displacement and rotation therebetween. The biasing member rests on the support member of the electronics board shroud, and the biasing member is configured to urge the contact structure of the display shroud into physical contact with the transparent cover piece. The interface subassembly includes a display circuit for providing a digital display and a touch circuit for providing touch actuation at or near the digital display through the transparent cover piece.Type: GrantFiled: September 14, 2010Date of Patent: November 20, 2012Assignee: Rosemount Inc.Inventors: Daniel Ronald Schwartz, Steven John McCoy, Jason Harold Rud
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Publication number: 20120063101Abstract: A display assembly includes a transparent cover piece, a display shroud having a contact structure arranged to face the transparent cover piece, an interface subassembly mounted on the display shroud, an electronics board shroud having a support member and a connection feature, and a biasing member operably engaged between the display shroud and the electronics board shroud. The connection feature mechanically connects the electronics board shroud to the display shroud while permitting axial displacement and rotation therebetween. The biasing member rests on the support member of the electronics board shroud, and the biasing member is configured to urge the contact structure of the display shroud into physical contact with the transparent cover piece. The interface subassembly includes a display circuit for providing a digital display and a touch circuit for providing touch actuation at or near the digital display through the transparent cover piece.Type: ApplicationFiled: September 14, 2010Publication date: March 15, 2012Applicant: Rosemount Inc.Inventors: Daniel Ronald Schwartz, Steven John McCoy, Jason Harold Rud
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Patent number: 8054907Abstract: A method and system for removing the effect of intersymbol interference (ISI) from a data record indicating times of logic level transitions exhibited by a data signal that has been distorted by ISI exhibited by a system having a particular step response may perform the following acts. The data record may be received, and a transition from within the data may be selected record for removal of ISI. Preceding transitions within the data record are then inspected. A time defect is obtained, based at least in part upon the inspected preceding transitions. Finally, the data record is adjusted, based upon the time defect, to indicate a new time of transition for the selected transition, thereby removing the effect of ISI for the selected transition.Type: GrantFiled: August 9, 2005Date of Patent: November 8, 2011Inventors: John David Hamre, Peng Li, Jan Brian Wilstrup, Steven John McCoy