Patents by Inventor Joseph P. Rushlow
Joseph P. Rushlow 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: 20230390472Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element.Type: ApplicationFiled: August 7, 2023Publication date: December 7, 2023Applicant: DEKA Products Limited PartnershipInventors: David A. Beavers, Michael G. Norris, John M. Kerwin, Andrew S. Coll, Paul G. Girouard, Robert J. Bryant, JR., Geoffrey P. Spencer, Joseph P. Rushlow, Jacob W. Scarpaci
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Patent number: 11752248Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element.Type: GrantFiled: January 14, 2019Date of Patent: September 12, 2023Assignee: DEKA Products Limited PartnershipInventors: David A. Beavers, Michael G. Norris, John M. Kerwin, Andrew S. Coll, Paul G. Girouard, Robert J. Bryant, Jr., Geoffrey P. Spencer, Joseph P. Rushlow, Jacob W. Scarpaci
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Patent number: 11400272Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections of an apparatus being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber.Type: GrantFiled: August 24, 2018Date of Patent: August 2, 2022Assignee: DEKA Products Limited PartnershipInventors: Michael G. Norris, Jacob W. Scarpaci, Robert J. Bryant, Jr., Geoffrey P. Spencer, David J. Hibbard, James D. Dale, John M. Kerwin, Andrew S. Coll, David A. Beavers, David W. McGill, Simon C. Helmore, David B. Doherty, Edgar J. Bolton, Jinsun Yoo, Paul G. Girouard, Daniel S. Karol, Daniel B. Singer, Joseph P. Rushlow
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Publication number: 20190321535Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections of the apparatus being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of a diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater.Type: ApplicationFiled: January 14, 2019Publication date: October 24, 2019Applicant: DEKA Products Limited PartnershipInventors: David A. Beavers, Michael G. Norris, John M. Kerwin, Andrew S. Coll, Paul G. Girouard, Robert J. Bryant, JR., Geoffrey P. Spencer, Joseph P. Rushlow, Jacob W. Scarpaci
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Publication number: 20190060629Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections of the apparatus being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of a diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater.Type: ApplicationFiled: August 24, 2018Publication date: February 28, 2019Applicant: DEKA Products Limited PartnershipInventors: Michael G. Norris, Jacob W. Scarpaci, Robert J. Bryant, JR., Geoffrey P. Spencer, David J. Hibbard, James D. Dale, John M. Kerwin, Andrew S. Coll, David A. Beavers, David W. McGill, Simon C. Helmore, David B. Doherty, Edgar J. Bolton, Jinsun Yoo, Paul G. Girouard, Daniel S. Karol, Daniel B. Singer, Joseph P. Rushlow
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Patent number: 10201647Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections of the apparatus being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of a diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater.Type: GrantFiled: June 5, 2015Date of Patent: February 12, 2019Assignee: DEKA Products Limited PartnershipInventors: Michael G. Norris, Jacob W. Scarpaci, Robert J. Bryant, Jr., Geoffrey P. Spencer, David J. Hibbard, James D. Dale, John M. Kerwin, Andrew S. Coll, David A. Beavers, David W. McGill, Simon C. Helmore, David B. Doherty, Edgar J. Bolton, Jinsun Yoo, Paul G. Girouard, Daniel S. Karol, Daniel B. Singer, Joseph P. Rushlow
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Patent number: 10058694Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections of the apparatus being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of a diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater.Type: GrantFiled: June 5, 2015Date of Patent: August 28, 2018Assignee: DEKA Products Limited PartnershipInventors: Michael G. Norris, Jacob W. Scarpaci, Robert J. Bryant, Jr., Geoffrey P. Spencer, David J. Hibbard, James D. Dale, John M. Kerwin, Andrew S. Coll, David A. Beavers, David W. McGill, Simon C. Helmore, David B. Doherty, Edgar J. Bolton, Jinsun Yoo, Paul G. Girouard, Daniel S. Karol, Daniel B. Singer, Joseph P. Rushlow
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Publication number: 20160101227Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections of the apparatus being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of a diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater.Type: ApplicationFiled: June 5, 2015Publication date: April 14, 2016Applicant: DEKA Products Limited PartnershipInventors: Michael G. Norris, Jacob W. Scarpaci, Robert J. Bryant, JR., Geoffrey P. Spencer, David J. Hibbard, James D. Dale, John M. Kerwin, Andrew S. Coll, David A. Beavers, David W. McGill, Simon C. Helmore, David B. Doherty, Edgar J. Bolton, Jinsun Yoo, Paul G. Girouard, Daniel S. Karol, Daniel B. Singer, Joseph P. Rushlow
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Publication number: 20160101278Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections of the apparatus being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of a diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater.Type: ApplicationFiled: June 5, 2015Publication date: April 14, 2016Applicant: DEKA Products Limited PartnerInventors: Michael G. Norris, Jacob W. Scarpaci, Robert J. Bryant, JR., Geoffrey P. Spencer, David J. Hibbard, James D. Dale, John M. Kerwin, Andrew S. Coll, David A. Beavers, David W. McGill, Simon C. Helmore, David B. Doherty, Edgar J. Bolton, Jinsun Yoo, Paul G. Girouard, Daniel S. Karol, Daniel B. Singer, Joseph P. Rushlow