Patent ID: 9371198
Filing Date: 2016-06-21
CPC Classification: B65G,F16K

Claim Text:
1. An air flow regulator, comprising: a. a vertically oriented tube; b. a pair of open-ended telescoping tubular internal segments within the tube, an outer tubular segment being fixed and the other being slide ably movable along the fixed segment in the axial direction; c. a plate extending partially across the interior of the vertically oriented tube, positioned for contacting the movable one of the telescoping tubular segments and limiting travel of the moveable telescoping tubular segment, the plate covering an open upper end of the movable telescoping tubular segment upon contact therewith; d. a sail positioned in the vertically oriented tube below the telescoping segments; e. a strut connecting the sail and the moveable telescoping tubular segment; f. the baffle positioned to direct upward air flow within the tube into the telescoping tubular segments; the movable telescoping tubular segment moving vertically within the tube unitarily with the sail responsive to air flow upwardly through the tube against the sail.