Patent ID: 8574045
Filing Date: 2013-11-05
Classification: E03B,E03F,F16L

Abstract:
1. A frost-free vent assembly apparatus for pipe systems comprising: a riser pipe having a longitudinal axis with distal and proximal ends, the proximal end comprising a flange configured to secure the riser pipe to a pipe or surface, the distal end of the inner cylindrical surface of the riser pipe having a plurality of radially arranged vertical grooves parallel to the longitudinal axis and designed to receive one or more ridges, the distal end of the riser pipe comprising a plurality of equidistant radially arranged openings along the riser pipe cylindrical surface, the equidistant openings having a plurality of equidistant air vanes horizontally and perpendicularly arranged to the longitudinal axis; a rotatable vent control component having a longitudinal axis with distal and proximal ends, the proximal end configured to secure the vent control component concentrically within the riser pipe, the outer cylindrical surface of the vent control component comprising: a plurality of radially arranged vertical grooves and a plurality of radially arranged vertical ridges designed to fit within the radially arranged vertical grooves of the distal end of the inner cylindrical surface of the riser pipe, wherein the plurality of radially arranged vertical grooves of the outer cylindrical surface of the vent control component converge inward toward the longitudinal axis of the vent control component at the distal end of the vent control component; and an annular protrusion extending outward from the outer cylindrical surface of the vent control component and configured to create a gap between the outer cylindrical surface of the vent control component and the riser pipe such that air flow is still permitted when the plurality of radially arranged grooves of the vent control component is not aligned with the radially arranged openings of the riser pipe; and a mesh component located between the rotatable vent control component and the inside of the riser pipe.