Patents by Inventor Thomas W. St. Clair

Thomas W. St. Clair 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).

  • Slide gate damper system
    Patent number: 4783048
    Abstract: A slide gate damper system comprises (a) a duct frame adapted for mounting in a duct, (b) a gate support frame mounted outside the duct in association with the duct frame; (c) guide rails positioned on the frame members of the gate support frame, (d) a slide gate positioned within the gate support frame, (e) a power source mounted on the slide gate and movable therewith and (f) a drive mechanism operatively connecting the power source to the gate support frame. Mounting of the power source on the slide gate and adapting the drive mechanism accordingly results in a slide gate damper system with reduced overall weight and support structure.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: November 8, 1988
    Inventor: Thomas W. St. Clair