Patents by Inventor Raj A. Desai

Raj A. Desai 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: 20240359480
    Abstract: Inkjet printing systems and methods dynamically control meniscus pressure at a nozzle to more reliably deliver ink to a substrate. The systems and methods include inferring an angle of a longitudinal axis of a printhead relative to the vertical reference axis based on an orientation signal from an orientation sensor, determining a target feed fluid pressure upstream of the nozzle and a target recirculation fluid pressure downstream of the nozzle, thereby to maintain a target pressure differentiation across the nozzle based, at least in part, on the inferred angle of the longitudinal axis, and controlling a variable feed pump speed and a variable recirculation pump speed to obtain the target feed fluid pressure and the target recirculation fluid pressure.
    Type: Application
    Filed: July 8, 2024
    Publication date: October 31, 2024
    Inventors: Matthew H. Mellin, Kjersta Lynn Larson-Smith, Edward Greene, Raj A. Desai
  • Patent number: 12053989
    Abstract: Inkjet printing systems and methods dynamically control meniscus pressure at a nozzle to more reliably deliver ink to a substrate. The systems and methods include inferring an angle of a longitudinal axis of a printhead relative to the vertical reference axis based on an orientation signal from an orientation sensor, determining a target feed fluid pressure upstream of the nozzle and a target recirculation fluid pressure downstream of the nozzle, thereby to maintain a target pressure differentiation across the nozzle based, at least in part, on the inferred angle of the longitudinal axis, and controlling a variable feed pump speed and a variable recirculation pump speed to obtain the target feed fluid pressure and the target recirculation fluid pressure.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: August 6, 2024
    Assignee: The Boeing Company
    Inventors: Matthew H. Mellin, Kjersta Lynn Larson-Smith, Edward Greene, Raj A. Desai
  • Publication number: 20220339947
    Abstract: Inkjet printing systems and methods dynamically control meniscus pressure at a nozzle to more reliably deliver ink to a substrate. The systems and methods include inferring an angle of a longitudinal axis of a printhead relative to the vertical reference axis based on an orientation signal from an orientation sensor, determining a target feed fluid pressure upstream of the nozzle and a target recirculation fluid pressure downstream of the nozzle, thereby to maintain a target pressure differentiation across the nozzle based, at least in part, on the inferred angle of the longitudinal axis, and controlling a variable feed pump speed and a variable recirculation pump speed to obtain the target feed fluid pressure and the target recirculation fluid pressure.
    Type: Application
    Filed: July 6, 2022
    Publication date: October 27, 2022
    Inventors: Matthew H. Mellin, Kjersta Lynn Larson-Smith, Edward Greene, Raj A. Desai
  • Patent number: 11413877
    Abstract: Inkjet printing systems and methods dynamically control meniscus pressure at a nozzle to more reliably deliver ink to a substrate. The systems and methods include inferring an angle of a longitudinal axis of a printhead relative to the vertical reference axis based on an orientation signal from an orientation sensor, determining a target feed fluid pressure upstream of the nozzle and a target recirculation fluid pressure downstream of the nozzle, thereby to maintain a target pressure differentiation across the nozzle based, at least in part, on the inferred angle of the longitudinal axis, and controlling a variable feed pump speed and a variable recirculation pump speed to obtain the target feed fluid pressure and the target recirculation fluid pressure.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: August 16, 2022
    Assignee: THE BOEING COMPANY
    Inventors: Matthew H. Mellin, Kjersta Lynn Larson-Smith, Edward Greene, Raj A. Desai
  • Patent number: 11333183
    Abstract: A fastener-receiving insert system includes a fastener-receiving insert having a proximal end and a distal end and at least one adhesive-dispensing chamber adjacent to the distal end of the insert, containing at least one part of an adhesive material within a chamber wall. The fastener-receiving insert system further includes a puncturing device operably engaged with and configured to puncture the chamber wall to release the at least one part of the adhesive material around the fastener-receiving insert.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: May 17, 2022
    Assignee: The Boeing Company
    Inventors: Raj A. Desai, Christopher Brad Long, Christopher J. Mills
  • Publication number: 20210362178
    Abstract: Inkjet printing systems and methods dynamically control meniscus pressure at a nozzle to more reliably deliver ink to a substrate. The systems and methods include inferring an angle of a longitudinal axis of a printhead relative to the vertical reference axis based on an orientation signal from an orientation sensor, determining a target feed fluid pressure upstream of the nozzle and a target recirculation fluid pressure downstream of the nozzle, thereby to maintain a target pressure differentiation across the nozzle based, at least in part, on the inferred angle of the longitudinal axis, and controlling a variable feed pump speed and a variable recirculation pump speed to obtain the target feed fluid pressure and the target recirculation fluid pressure.
    Type: Application
    Filed: May 21, 2020
    Publication date: November 25, 2021
    Applicant: The Boeing Company
    Inventors: Matthew H. Mellin, Kjersta Lynn Larson-Smith, Edward Greene, Raj A. Desai
  • Publication number: 20210190111
    Abstract: A fastener-receiving insert system includes a fastener-receiving insert having a proximal end and a distal end and at least one adhesive-dispensing chamber adjacent to the distal end of the insert, containing at least one part of an adhesive material within a chamber wall. The fastener-receiving insert system further includes a puncturing device operably engaged with and configured to puncture the chamber wall to release the at least one part of the adhesive material around the fastener-receiving insert.
    Type: Application
    Filed: December 18, 2019
    Publication date: June 24, 2021
    Inventors: Raj A. Desai, Christopher Brad Long, Christopher J. Mills