Patents by Inventor Charles A. Cluff

Charles A. Cluff 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).

  • Publication number: 20200348062
    Abstract: A method of heating a component within a heating, ventilation and air conditioning (HVAC) system is provided. The method includes maintaining a non-heating condition of the HVAC system component when the HVAC system component is in a non-operational state. The method also includes determining when the HVAC system component will switch from the non-operational state to an operational state, the determination based on a threshold parameter being met. The method further includes operating a heating device from the non-heating condition to a heating condition to heat the HVAC system component from a temperature to a target temperature suitable for the operational state of the HVAC system component.
    Type: Application
    Filed: October 3, 2018
    Publication date: November 5, 2020
    Inventors: Charles A. CLUFF, Jun Pyo LEE, Sathish R. DAS, Charles A. SEYMOUR
  • Publication number: 20200284251
    Abstract: A high pressure threshold detection circuit (100) is provided. The high pressure threshold detection circuit includes a pressure transducer (110) for measuring a pressure of a medium at an outlet (104) of a compressor (102). The high pressure threshold detection circuit (100) includes a controller (120). The controller (120) includes a comparator (123) and a switch (125). The comparator (123) and the switch (125) are electrically coupled. The switch (125) is electrically coupled to an enable circuit (131). The pressure transducer (110) is electrically coupled to the comparator (123) to provide a signal to the comparator (123) based on the pressure measured at the outlet (104). The comparator (123) outputs a control signal (111) to the switch (125) when the signal (111) is equal to or greater than a reference value (126). The switch (125) opens the enable circuit (131) to disable compression of the medium by the compressor (102) in response to the control signal (111).
    Type: Application
    Filed: September 25, 2018
    Publication date: September 10, 2020
    Inventor: Charles A. Cluff
  • Publication number: 20200248944
    Abstract: An illustrative example refrigerant system includes a compressor configured to pressurize a refrigerant fluid. The compressor includes a sump portion. A heater is situated to heat at least the sump portion. A controller is configured to selectively operate the heater to apply heat to at least the sump portion while the compressor is off to establish and maintain a superheat condition in the compressor.
    Type: Application
    Filed: January 17, 2020
    Publication date: August 6, 2020
    Inventor: Charles A. Cluff
  • Publication number: 20200224947
    Abstract: An illustrative example refrigerant system includes a compressor configured to pressurize a refrigerant fluid. The compressor includes a sump portion. A heater is situated to heat at least the sump portion. A controller is configured to selectively operate the heater to apply heat to at least the sump portion while the compressor is off and continue operating the heater when the compressor turns on until a temperature of the compressor or a temperature of fluid discharged from the compressor satisfies at least one criterion.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 16, 2020
    Inventor: Charles A. Cluff
  • Publication number: 20200224908
    Abstract: An illustrative example method of controlling a heat pump system includes operating in a defrost mode to provide heat to an outdoor heat exchanger for defrosting at least a portion of the outdoor heat exchanger, controlling a fan to be inoperative during the defrost mode, operating in a heating mode to provide heat within a temperature-conditioned space subsequent to operating in the defrost mode, controlling the fan to remain inoperative for an initial period at a beginning of operating in the heating mode, and controlling the fan to operate during the heating mode after the initial period to cause airflow across at least the portion of the outdoor heat exchanger.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 16, 2020
    Inventor: Charles A. Cluff
  • Publication number: 20190368790
    Abstract: A heating and cooling system includes a compressor having a discharge outlet and a suction inlet; a first heat exchanger; a second heat exchanger; a four-way valve including: a body including a first port connected to the discharge outlet, a second port connected to the first heat exchanger, a third port connected to the suction inlet and a fourth port connected to the second heat exchanger; a slider positioned in the body; and an actuator assembly configured to impart linear motion to the slider; and a controller configured to send a command to the actuator assembly to move the slider to one of a first position, a second position or a third position.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 5, 2019
    Inventors: Sathish R. Das, Charles A. Cluff
  • Publication number: 20190310005
    Abstract: In a method for operating a compressor (22) having an inlet (26) and an outlet (28), the method includes: running the compressor to compress a fluid; shutting down (422) the compressor; determining (420) a condition-dependent threshold restart pressure difference (threshold) across the compressor; relieving the pressure-difference to reach the threshold; and, after the threshold is reached, restarting (434) the compressor.
    Type: Application
    Filed: February 25, 2019
    Publication date: October 10, 2019
    Applicant: Carrier Corporation
    Inventors: Charles A. Cluff, Matthew T. Austin
  • Patent number: 9066085
    Abstract: A system, controller, and method for aligning a stereo camera of a vehicle mounted object detection system that includes a first camera and a second camera mounted spaced apart on a vehicle. An image from each camera at two different times is used to determine an observed displacement of an object relative to the vehicle. A predicted displacement of the object relative to the vehicle is also determined using either a difference of vehicle position measured based on other vehicle measurements or GPS, or a difference of size of the object in images taken at the two different times. Alignment is provided by determining a triangulation correction based on a difference of the observed displacement and the predicted displacement to correct for misalignment of the cameras.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: June 23, 2015
    Assignee: Delphi Technologies, Inc.
    Inventors: Charles A. Cluff, Ronald M. Taylor
  • Publication number: 20140168377
    Abstract: A system, controller, and method for aligning a stereo camera of a vehicle mounted object detection system that includes a first camera and a second camera mounted spaced apart on a vehicle. An image from each camera at two different times is used to determine an observed displacement of an object relative to the vehicle. A predicted displacement of the object relative to the vehicle is also determined using either a difference of vehicle position measured based on other vehicle measurements or GPS, or a difference of size of the object in images taken at the two different times. Alignment is provided by determining a triangulation correction based on a difference of the observed displacement and the predicted displacement to correct for misalignment of the cameras.
    Type: Application
    Filed: December 13, 2012
    Publication date: June 19, 2014
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Charles A. Cluff, Ronald M. Taylor
  • Patent number: 8387457
    Abstract: A collision sensor module configured to be attached to a surface of a vehicle. The module includes a collision sensor circuit board configured to detect acceleration indicative of a vehicle collision event. The exterior of the module is defined by a housing that includes a rigid part and a flexible part. The rigid part is configured to define a wing portion for attaching the rigid part to the surface, provide an underside surface of the rigid part to couple the collision sensor circuit board to the surface in a manner effective for the circuit board to detect when the vehicle is involved in a collision event. The flexible part is configured to sealingly contact the rigid part and the collision sensor circuit board in a manner effective to seal the protective cavity when the rigid part is attached to the surface and thereby protect the collision sensor circuit board.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: March 5, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Chris R. Snider, Charles A. Cluff
  • Publication number: 20120174669
    Abstract: A collision sensor module configured to be attached to a surface of a vehicle. The module includes a collision sensor circuit board configured to detect acceleration indicative of a vehicle collision event. The exterior of the module is defined by a housing that includes a rigid part and a flexible part. The rigid part is configured to define a wing portion for attaching the rigid part to the surface, provide an underside surface of the rigid part to couple the collision sensor circuit board to the surface in a manner effective for the circuit board to detect when the vehicle is involved in a collision event. The flexible part is configured to sealingly contact the rigid part and the collision sensor circuit board in a manner effective to seal the protective cavity when the rigid part is attached to the surface and thereby protect the collision sensor circuit board.
    Type: Application
    Filed: August 15, 2011
    Publication date: July 12, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: CHRIS R. SNIDER, CHARLES A. CLUFF
  • Publication number: 20120173080
    Abstract: A method and a system for assisting a vehicle operator to parallel park a vehicle. The method and system use only a single proximity sensor to detect a suitable parallel parking space and monitor the position of the vehicle when backing into the parallel parking space. Assistance to parallel park the vehicle may be as little as providing indications or warning to a vehicle operator while the vehicle operator backs the vehicle into the parallel parking space, or may be as much as taking complete control of the vehicle away from the vehicle operator, and autonomously parallel parking the vehicle.
    Type: Application
    Filed: December 29, 2010
    Publication date: July 5, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventor: CHARLES A. CLUFF
  • Publication number: 20110106383
    Abstract: A vehicle collision sensing system having sensor modules distributed about the vehicle configured to receive initialization signals for coordinating communication with a control module over a time multiplexed communication network that is part of the control module. The control module has a switch that is open when a first sensor module is initialized and closed when a second sensor module is initialized so that each sensor module can be individually initialized or programmed after installation in the vehicle. By individually initializing each sensor module after the sensor modules are installed in the vehicle, identical sensor modules can be installed at various locations about the vehicle and thereafter initialized to make each sensor module unique.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 5, 2011
    Applicant: Delphi Technologies, Inc.
    Inventors: Charles A. Cluff, Michael K. Walden, Christopher E. Perkins
  • Publication number: 20110015804
    Abstract: A system and method are provided for communicating data synchronously with a plurality of crash sensors onboard a vehicle. The system includes a control unit comprising interface circuitry for communicating with a plurality of crash sensors and providing synchronization signals to the crash sensors. The system also includes a communication bus coupled to the control unit for communicating with the crash sensors. The system further includes a plurality of crash sensors connected to the communication bus for communicating with the control unit. Each of the plurality of crash sensors receives one or more synchronization signals and is capable of transmitting data in response to the synchronous signals. The plurality of crash sensors each comprises logic for comparing a sensed parameter to a threshold and transmitting data when the sensed parameter exceeds the threshold.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 20, 2011
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Charles A. Cluff, Robert H. Obremski, Mark R. Keyse
  • Patent number: 7805231
    Abstract: A vehicle crash sensing system and method are provided for sensing a vehicle crash event. The system includes a linear acceleration sensor located on a vehicle for sensing linear acceleration along a first sensing axis and generating a linear acceleration signal. The system has linear crash sensing logic for determining a crash event along the first sensing axis as a function of the sensed linear acceleration. The system also has signal processing circuitry for processing the linear acceleration signal and generating a processed linear acceleration signal. The system has an angular rate sensor located on the vehicle for sensing an angular roll rate of the vehicle about a second sensing axis and generating a roll rate signal. The system further includes rollover crash sensing logic for determining a rollover event of the vehicle about the second sensing axis as a function of the processed linear acceleration signal and the roll rate signal.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: September 28, 2010
    Assignee: Delphi Technologies, Inc.
    Inventors: Charles A. Cluff, Robert K Constable, Brian M. Stavroff, Robert R. McConnell
  • Patent number: 7658294
    Abstract: A nursing bottle comprising a fluid container having a cushiony exterior sidewall and an object disposed between the fluid container and the exterior sidewall to enable viewing of the object through the exterior sidewall.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: February 9, 2010
    Inventors: Todd Housley, Charles Cluff Squires
  • Publication number: 20090056446
    Abstract: A multiple-axis sensor package and method of assembling a multiple-axis sensor package are provided. The package includes a first accelerometer for sensing acceleration in a first sensing axis. The package also includes a second substrate having a second accelerometer for sensing acceleration in a second sensing axis. The package further includes one or more bent lead connectors connecting the first substrate to the second substrate, wherein the one or more bent lead connectors are bent so that the first sensing axis is different than the second sensing axis.
    Type: Application
    Filed: September 5, 2007
    Publication date: March 5, 2009
    Inventors: Charles A. Cluff, Chean F. Cheng, Aik Huang Chan, Joe Chua
  • Publication number: 20080251486
    Abstract: A nursing bottle comprising a fluid container having a cushiony exterior sidewall and an object disposed between the fluid container and the exterior sidewall to enable viewing of the object through the exterior sidewall.
    Type: Application
    Filed: April 12, 2007
    Publication date: October 16, 2008
    Inventors: Todd Housley, Charles Cluff Squires
  • Patent number: 7349783
    Abstract: A supplemental restraint deployment method utilizes measured vehicle speed and acceleration and the output of a closing velocity sensor that detects the presence and closing rate of an approaching object prior to contact with the vehicle. The closing velocity and vehicle speed are utilized for classification of an impending crash event, where the deployment options vary depending on the crash classification. In the ensuing crash event, a classification-dependent algorithm is executed to determine if, when and what level of restraint deployment is warranted based on measures of actual crash severity. Additionally, the algorithm is reset when the calculated change in vehicle velocity reaches the initial closing velocity.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: March 25, 2008
    Assignee: Delphi Technologies, Inc.
    Inventors: Robert J. Cashler, Junqiang Shen, Walter Kirk Kosiak, Russell L. Simpson, Charles A. Cluff
  • Publication number: 20080046147
    Abstract: A vehicle crash sensing system and method are provided for sensing a vehicle crash event. The system includes a linear acceleration sensor located on a vehicle for sensing linear acceleration along a first sensing axis and generating a linear acceleration signal. The system has linear crash sensing logic for determining a crash event along the first sensing axis as a function of the sensed linear acceleration. The system also has signal processing circuitry for processing the linear acceleration signal and generating a processed linear acceleration signal. The system has an angular rate sensor located on the vehicle for sensing an angular roll rate of the vehicle about a second sensing axis and generating a roll rate signal. The system further includes rollover crash sensing logic for determining a rollover event of the vehicle about the second sensing axis as a function of the processed linear acceleration signal and the roll rate signal.
    Type: Application
    Filed: June 29, 2006
    Publication date: February 21, 2008
    Inventors: Charles A. Cluff, Robert K. Constable, Brian M. Stavroff, Robert R. McConnell