Patents by Inventor Ronald R. LaPointe

Ronald R. LaPointe 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).

  • Rotary-action directional control valve
    Patent number: 4836249
    Abstract: An improved rotary-action directional flow control valve for hydraulic hydraulic motors and the like. The valve provides pressure-compensating constant flow in one or both directions. The valve has a main spool rotatable within a valve body to plural positions to determine flow direction, and one or more inner spools or the like in cavities within the main spool to provide the pressure-compensating. A plurality of spool voids and orifices form, with the valve body, flow channels between ports in the valve body.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: June 6, 1989
    Assignee: Webster Electric Co.,Inc.
    Inventor: Ronald R. LaPointe