Patents by Inventor Robert STAWINSKI

Robert STAWINSKI 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 stop valve for a camera crane
    Patent number: 8579525
    Abstract: A stop valve for a camera support such as a telescoping camera crane may include a valve pin engagable onto a valve seat, with a pin plate attached to the valve pin. A spring urges the valve pin in a first direction, which may be an opening direction or a closing direction. First and second dampener pins in first and second cylinders are attached to the pin plate. A closed loop fluid filled flow path connects the first and second cylinders. First and second check valves may be used to control flow in the flow path.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: November 12, 2013
    Assignee: Chapman/Leonard Studio Equipment, Inc.
    Inventors: Leonard T. Chapman, Robert Stawinski
  • HYDRAULIC STOP VALVE FOR A CAMERA CRANE
    Publication number: 20120070143
    Abstract: A stop valve for a camera support such as a telescoping camera crane may include a valve pin engagable onto a valve seat, with a pin plate attached to the valve pin. A spring urges the valve pin in a first direction, which may be an opening direction or a closing direction. First and second dampener pins in first and second cylinders are attached to the pin plate. A closed loop fluid filled flow path connects the first and second cylinders. First and second check valves may be used to control flow in the flow path.
    Type: Application
    Filed: October 20, 2011
    Publication date: March 22, 2012
    Applicant: CHAPMAN/LEONARD STUDIO EQUIPMENT, INC.
    Inventors: Leonard T. CHAPMAN, Robert STAWINSKI