Patents by Inventor Aleksandr Gershik

Aleksandr Gershik 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).

  • Method and system for improving stability of hydraulic systems with load sense
    Patent number: 7261030
    Abstract: A hydraulic circuit is disclosed that can include a flow control element, a pressure compensator connected via a pair of load sense lines to an inlet line and an outlet line, respectively, of a flow control element to provide a constant pressure drop across the flow control element, and a load sense line control valve installed in a load sense line to provide controllable resistance in a flow passage in opposite flow directions, the resistance in each flow direction being different. The load sense line control valve can include a restrictive orifice followed by a spring-loaded check valve in a first flow direction and at least one other restrictive orifice and a check valve in a second flow direction, the second flow direction opposing the first flow direction.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: August 28, 2007
    Assignee: HydraForce, Inc.
    Inventors: Zilek Liberfarb, Aleksandr Gershik, Michael Cannestra
  • Method and system for improving stability of hydraulic systems with load sense
    Publication number: 20060086244
    Abstract: A hydraulic circuit is disclosed that can include a flow control element, a pressure compensator connected via a pair of load sense lines to an inlet line and an outlet line, respectively, of a flow control element to provide a constant pressure drop across the flow control element, and a load sense line control valve installed in a load sense line to provide controllable resistance in a flow passage in opposite flow directions, the resistance in each flow direction being different. The load sense line control valve can include a restrictive orifice followed by a spring-loaded check valve in a first flow direction and at least one other restrictive orifice and a check valve in a second flow direction, the second flow direction opposing the first flow direction.
    Type: Application
    Filed: September 9, 2005
    Publication date: April 27, 2006
    Applicant: HydraForce, INc.
    Inventors: Zilek Liberfarb, Aleksandr Gershik, Michael Cannestra