Relief valve
AssigneeEaton Corporation
InventorThomas A. Novak
Life of this patent
Estimating the term…
Abstract
An improved pressure relief valve for tubeless tires or the like is provided. The pressure relief valve includes a novel poppet valve dust cover structure which will automatically reposition the dust cover after each opening or cycle of the relief valve and which will allow the dust cover to act as a secondary poppet valve surface during venting of the pressurized container in which the valve is mounted to increase the rate of fluid flow through the valve. The valve is designed to be sealingly mounted in an aperture in a wall of the pressurized container and may be mounted therein by means of a threaded connection, a clamp connection, a snap-in connection from the interior of the container or a push-in connection from the exterior of the container. The dust cover is attached to the main poppet valve member for axial movement therewith.
Claims16
A pressure relief valve for maintaining the pressure within a pressurized container no greater than a predetermined maximum pressure, said valve comprising:
- a valve body adapted to be sealingly mounted in an aperture in a wall of said pressurized container, said valve body having an axially extending passage therethrough, said passage having an inlet for fluid communication with the interior of the pressurized container and an outlet for fluid communication with the exterior of the container, said passage defining a valve seat interposed between said inlet and said outlet;
- an axially movable poppet member slidably received in said passage interposed between said valve seat and said outlet, said poppet member having a surface for sealing contact with said valve seat to prevent fluid flow through said passage;
- means for biasing said poppet member toward said valve seat;
- a valve stem extending from said poppet member towards said outlet, said stem attached to said poppet member for axial movement therewith;
- and
- a cover member exterior of said valve body and attached to said valve stem causing said cover member to move axially therewith and preventing relative axial movement therebetween, said cover member being sufficiently large to cover said outlet, said cover member being axially spaced from said poppet member such that said cover member will contact said outlet when the poppet member surface sealingly contacts said valve seat, said cover being formed of resilient material such that said cover member is axially flexible in the regions adjacent the outer periphery thereof.
A pressure relief valve comprising a body mountable to a pressurized container, said body defining an axially extending passage therethrough having an inlet in fluid communication with the interior of the container and an outlet, said passage having a valve seat intermediate said inlet and said outlet, a poppet slidably mounted in said passage, said poppet having a surface biased to normally contact said valve seat to block the flow of fluid through said passage, and a cover member exterior of and coaxial with the outlet, said cover member generally rigidly mounted to said poppet causing said cover member to move axially therewith and preventing relative axial movement therebetween, said cover member axially spaced from the surface of said poppet designed to contact said valve seat by a distance substantially equal to the separation of said valve seat and said outlet, said cover being formed of resilient material such that said cover member is axially flexible in the regions adjacent the outer periphery thereof.
Dependencies are inferred from the claim text.