Patents by Inventor Shailendra J SHRIVASTAVA

Shailendra J SHRIVASTAVA 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).

  • Hydraulic system for hydro-mechanical machines comprising rotary mechanism and boom cylinder
    Patent number: 11814814
    Abstract: This disclosure relates to a hydraulic system for a hydro-mechanical machine comprising a rotary mechanism and a boom cylinder The hydraulic system includes a primary accumulator configured to receive and store high-pressure fluid in response to starting and stopping of the rotary mechanism. A control system configured to enable passage of the high-pressure fluid stored in the primary accumulator to a rotary control valve configured to control the rotary mechanism, and a boom control valve configured to control the boom cylinder through the hydraulic supply circuit, based on a predefined pressure threshold associated with the primary accumulator. A secondary accumulator coupled to the primary accumulator and the control system via the hydraulic supply circuit is configured to store surplus high-pressure fluid provided by the primary accumulator through the hydraulic supply circuit.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: November 14, 2023
    Assignee: L&T TECHNOLOGY SERVICES LIMITED
    Inventors: Atul Chandra Tripathi, Shailendra J Shrivastava
  • HYDRAULIC SYSTEM FOR HYDRO-MECHANICAL MACHINES COMPRISING ROTARY MECHANISM AND BOOM CYLINDER
    Publication number: 20220397133
    Abstract: This disclosure relates to a hydraulic system for a hydro-mechanical machine comprising a rotary mechanism and a boom cylinder The hydraulic system includes a primary accumulator configured to receive and store high-pressure fluid in response to starting and stopping of the rotary mechanism. A control system configured to enable passage of the high-pressure fluid stored in the primary accumulator to a rotary control valve configured to control the rotary mechanism, and a boom control valve configured to control the boom cylinder through the hydraulic supply circuit, based on a predefined pressure threshold associated with the primary accumulator. A secondary accumulator coupled to the primary accumulator and the control system via the hydraulic supply circuit is configured to store surplus high-pressure fluid provided by the primary accumulator through the hydraulic supply circuit.
    Type: Application
    Filed: March 18, 2020
    Publication date: December 15, 2022
    Inventors: ATUL CHANDRA TRIPATHI, SHAILENDRA J SHRIVASTAVA
  • Hydraulic system for hydro-mechanical machines comprising rotary mechanism
    Patent number: 11118604
    Abstract: This disclosure relates to a hydraulic system for a hydro-mechanical machine comprising a rotary mechanism. The hydraulic system includes a primary accumulator configured to receive and store high-pressure fluid in response to stopping of the rotary mechanism. A control system coupled to the primary accumulator through a hydraulic supply circuit is configured to enable passage of the high-pressure fluid stored in the primary accumulator to a rotary control valve configured to control the rotary mechanism, through the hydraulic supply circuit, based on a predefined pressure threshold associated with the primary accumulator. A secondary accumulator coupled to the primary accumulator and the control system via the hydraulic supply circuit is configured to store surplus high-pressure fluid provided by the primary accumulator through the hydraulic supply circuit.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: September 14, 2021
    Assignee: L&T TECHNOLOGY SERVICES LIMITED
    Inventors: Atul Chandra Tripathi, Shailendra J Shrivastava
  • HYDRAULIC SYSTEM FOR HYDRO-MECHANICAL MACHINES COMPRISING ROTARY MECHANISM
    Publication number: 20210018019
    Abstract: This disclosure relates to a hydraulic system for a hydro-mechanical machine comprising a rotary mechanism. The hydraulic system includes a primary accumulator configured to receive and store high-pressure fluid in response to stopping of the rotary mechanism. A control system coupled to the primary accumulator through a hydraulic supply circuit is configured to enable passage of the high-pressure fluid stored in the primary accumulator to a rotary control valve configured to control the rotary mechanism, through the hydraulic supply circuit, based on a predefined pressure threshold associated with the primary accumulator. A secondary accumulator coupled to the primary accumulator and the control system via the hydraulic supply circuit is configured to store surplus high-pressure fluid provided by the primary accumulator through the hydraulic supply circuit.
    Type: Application
    Filed: November 9, 2018
    Publication date: January 21, 2021
    Applicant: L&T TECHNOLOGY SERVICES LIMITED
    Inventors: Atul CHANDRA TRIPATHI, Shailendra J SHRIVASTAVA