Patents by Inventor Hrudaya Mahapatro
Hrudaya Mahapatro 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: 10006541Abstract: A control valve for an automatic transmission includes a valve body and a solenoid module. The body has a chamber, control pressure port, exhaust port, and reference surface. Metering edges are formed in the body at the control port. A spring transmits force between first and second spools in the chamber. The solenoid module has a pin for displacing the first spool and is located by contact with the reference surface. The solenoid module also has a first stop surface limiting pin movement and a second stop surface contacting the reference surface.Type: GrantFiled: November 23, 2015Date of Patent: June 26, 2018Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Robert O. Burkhart, Derek Kinch, John Butwin, Anthony G. Koenings, Hrudaya Mahapatro, Wei Zhuang
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Patent number: 9803637Abstract: A system controlling pressure in a transmission including a variable displacement pump, a circuit carrying fluid from the pump to the transmission, a valve using fluid in said circuit to regulate pressure that controls displacement of the pump, a source of control pressure including an accumulator, a first spring acting with said source causing the valve to change the regulated pressure, and a second spring acting with feedback pressure from said circuit to oppose said change.Type: GrantFiled: July 14, 2011Date of Patent: October 31, 2017Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Derek Kinch, Mark R. Dobson, Lev Pekarsky, Hrudaya Mahapatro
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Patent number: 9803638Abstract: The present disclosure relates to a control circuit for a variable displacement pump in a vehicle transmission, including: a regulator valve configured to regulate displacement control fluid to the variable displacement pump; and a response limiter in communication with the regulator valve, configured to mitigate pressure oscillations in the control circuit.Type: GrantFiled: January 31, 2012Date of Patent: October 31, 2017Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Derek B. Kinch, Mark Richard Dobson, Lev Pekarsky, Hrudaya Mahapatro
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Patent number: 9441732Abstract: A control valve for an automatic transmission includes a valve body including a chamber and a control pressure port, metering edges formed in the valve body at the control pressure port, a reference surface formed in the valve body, a spool displaceable along the chamber, and a solenoid module including a pin for displacing the spool, and located in the chamber by contact with the reference surface.Type: GrantFiled: March 17, 2015Date of Patent: September 13, 2016Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Robert O. Burkhart, Derek Kinch, John Butwin, Anthony G. Koenings, Hrudaya Mahapatro, Wei Zhuang
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Publication number: 20160076642Abstract: A control valve for an automatic transmission includes a valve body and a solenoid module. The body has a chamber, control pressure port, exhaust port, and reference surface. Metering edges are formed in the body at the control port. A spring transmits force between first and second spools in the chamber. The solenoid module has a pin for displacing the first spool and is located by contact with the reference surface. The solenoid module also has a first stop surface limiting pin movement and a second stop surface contacting the reference surface.Type: ApplicationFiled: November 23, 2015Publication date: March 17, 2016Inventors: ROBERT O. BURKHART, DEREK KINCH, JOHN BUTWIN, ANTHONY G. KOENINGS, HRUDAYA MAHAPATRO, WEI ZHUANG
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Publication number: 20150184741Abstract: A control valve for an automatic transmission includes a valve body including a chamber and a control pressure port, metering edges formed in the valve body at the control pressure port, a reference surface formed in the valve body, a spool displaceable along the chamber, and a solenoid module including a pin for displacing the spool, and located in the chamber by contact with the reference surface.Type: ApplicationFiled: March 17, 2015Publication date: July 2, 2015Inventors: ROBERT O. BURKHART, DEREK KINCH, JOHN BUTWIN, ANTHONY G. KOENINGS, HRUDAYA MAHAPATRO, WEI ZHUANG
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Patent number: 9010374Abstract: A control valve for an automatic transmission includes a valve body including a chamber and a control pressure port, metering edges formed in the valve body at the control pressure port, a reference surface formed in the valve body, a spool displaceable along the chamber, and a solenoid module including a pin for displacing the spool, and located in the chamber by contact with the reference surface.Type: GrantFiled: July 28, 2011Date of Patent: April 21, 2015Assignee: Ford Global Technologies, LLCInventors: Robert O. Burkhart, Derek Kinch, John Butwin, Anthony Koenings, Hrudaya Mahapatro, Wei Zhuang
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Patent number: 8960232Abstract: A latch valve includes a first port containing line pressure, a second port containing control pressure, a third port located between the first and second ports, alternately connecting the first and second ports to a transmission control element, and a fourth port containing control pressure that tends to close the second port and open the first port in opposition to a spring force.Type: GrantFiled: September 6, 2011Date of Patent: February 24, 2015Assignee: Ford Global Technologies, LLCInventors: Robert O. Burkhart, John Butwin, Derek Kinch, Hrudaya Mahapatro, Wei Zhuang, Anthony Koenings
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Patent number: 8490640Abstract: A system for regulating pressure supplied to a transmission control element, includes a control pressure source and line pressure source, a latch valve that opens and closes communication with the line pressure source in response to control pressure, and a regulator valve including a spool for regulating line pressure and producing control element pressure when the latch valve is closed, and an auxiliary piston responsive to line pressure and contacting the spool for connecting line pressure to the control element when the latch valve is open.Type: GrantFiled: June 10, 2009Date of Patent: July 23, 2013Assignee: Ford Global Technologies, LLCInventors: Hrudaya Mahapatro, Robert O. Burkhart, John Butwin
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Publication number: 20130056657Abstract: A latch valve includes a first port containing line pressure, a second port containing control pressure, a third port located between the first and second ports, alternately connecting the first and second ports to a transmission control element, and a fourth port containing control pressure that tends to close the second port and open the first port in opposition to a spring force.Type: ApplicationFiled: September 6, 2011Publication date: March 7, 2013Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Robert O. Burkhart, John Butwin, Derek Kinch, Hrudaya Mahapatro, Wei Zhuang, Anthony Koenings
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Publication number: 20130026401Abstract: A control valve for an automatic transmission includes a valve body including a chamber and a control pressure port, metering edges formed in the valve body at the control pressure port, a reference surface formed in the valve body, a spool displaceable along the chamber, and a solenoid module including a pin for displacing the spool, and located in the chamber by contact with the reference surface.Type: ApplicationFiled: July 28, 2011Publication date: January 31, 2013Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Robert O. Burkhart, Derek Kinch, John Butwin, Anthony Koenings, Hrudaya Mahapatro, Wei Zhuang
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Publication number: 20130014498Abstract: A system controlling pressure in a transmission including a variable displacement pump, a circuit carrying fluid from the pump to the transmission, a valve using fluid in said circuit to regulate pressure that controls displacement of the pump, a source of control pressure including an accumulator, a first spring acting with said source causing the valve to change the regulated pressure, and a second spring acting with feedback pressure from said circuit to oppose said change.Type: ApplicationFiled: July 14, 2011Publication date: January 17, 2013Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Derek Kinch, Mark R. Dobson, Lev Pekarsky, Hrudaya Mahapatro
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Publication number: 20130017112Abstract: The present disclosure relates to a control circuit for a variable displacement pump in a vehicle transmission, including: a regulator valve configured to regulate displacement control fluid to the variable displacement pump; and a response limiter in communication with the regulator valve, configured to mitigate pressure oscillations in the control circuit.Type: ApplicationFiled: January 31, 2012Publication date: January 17, 2013Inventors: Derek B. Kinch, Mark Richard Dobson, Lev Pekarsky, Hrudaya Mahapatro
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Publication number: 20100313970Abstract: A system for regulating pressure supplied to a transmission control element, includes a control pressure source and line pressure source, a latch valve that opens and closes communication with the line pressure source in response to control pressure, and a regulator valve including a spool for regulating line pressure and producing control element pressure when the latch valve is closed, and an auxiliary piston responsive to line pressure and contacting the spool for connecting line pressure to the control element when the latch valve is open.Type: ApplicationFiled: June 10, 2009Publication date: December 16, 2010Inventors: Hrudaya Mahapatro, Robert O. Burkhart, John Butwin
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Patent number: 7192005Abstract: A method and system for controlling a solenoid-operated pressure regulator valve to achieve high compliance with respect to a commanded current in accordance with a precalibrated transfer function. A dither frequency imposed on applied current is changed at precalibrated regulated pressure values to avoid dynamic instability.Type: GrantFiled: July 15, 2004Date of Patent: March 20, 2007Assignee: Ford Global Technologies, LLCInventors: Gary Denyer, Bud Burkhart, Jacob Povirk, Stephen Siatczynski, Hrudaya Mahapatro, Robert Pavlik
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Publication number: 20060011878Abstract: A method and system for controlling a solenoid-operated pressure regulator valve to achieve high compliance with respect to a commanded current in accordance with a precalibrated transfer function. A dither frequency imposed on applied current is changed at precalibrated regulated pressure values to avoid dynamic instability.Type: ApplicationFiled: July 15, 2004Publication date: January 19, 2006Applicant: FORD MOTOR COMPANYInventors: Gary Denyer, Bud Burkhart, Jacob Povirk, Stephen Siatczynski, Hrudaya Mahapatro, Robert Pavlik