Patents by Inventor David A. DeFusco

David A. DeFusco 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 actuator force fight mitigation mechanism
    Patent number: 11391384
    Abstract: A control valve for a multi-stage hydraulic actuator includes a valve body defining a translation axis, a spool disposed within the valve body and movable along the translation axis, and a flange. The flange is fixed relative to the spool and has an aperture disposed externally of the valve body to removably fix the spool to a spool of a redundant control valve independently connected to the multi-stage hydraulic actuator for mitigating force fights between actuators coupled to the control valve.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: July 19, 2022
    Assignee: Sikorsky Aircraft Corporation
    Inventor: David A. DeFusco
  • HYDRAULIC ACTUATOR FORCE FIGHT MITIGATION MECHANISM
    Publication number: 20200003314
    Abstract: A control valve for a multi-stage hydraulic actuator includes a valve body defining a translation axis, a spool disposed within the valve body and movable along the translation axis, and a flange. The flange is fixed relative to the spool and has an aperture disposed externally of the valve body to removably fix the spool to a spool of a redundant control valve independently connected to the multi-stage hydraulic actuator for mitigating force fights between actuators coupled to the control valve.
    Type: Application
    Filed: August 14, 2019
    Publication date: January 2, 2020
    Inventor: David A. DeFusco
  • Hydraulic actuator force fight mitigation mechanism
    Patent number: 10458557
    Abstract: A control valve for a multi-stage hydraulic actuator includes a valve body defining a translation axis, a spool disposed within the valve body and movable along the translation axis, and a flange. The flange is fixed relative to the spool and has an aperture disposed externally of the valve body to removably fix the spool to a spool of a redundant control valve independently connected to the multi-stage hydraulic actuator for mitigating force fights between actuators coupled to the control valve.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: October 29, 2019
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventor: David A. DeFusco
  • HYDRAULIC ACTUATOR FORCE FIGHT MITIGATION MECHANISM
    Publication number: 20170307090
    Abstract: A control valve for a multi-stage hydraulic actuator includes a valve body defining a translation axis, a spool disposed within the valve body and movable along the translation axis, and a flange. The flange is fixed relative to the spool and has an aperture disposed externally of the valve body to removably fix the spool to a spool of a redundant control valve independently connected to the multi-stage hydraulic actuator for mitigating force fights between actuators coupled to the control valve.
    Type: Application
    Filed: March 16, 2017
    Publication date: October 26, 2017
    Inventor: David A. DeFusco