Hydrogen vent for remote terminal cabinets
AssigneeHubbell Incorporated
InventorsJames H. Durham, Wilfred L. Gleadall, Richard A. Carmichael, Ray E. Medcalf
Life of this patent
Estimating the term…
Abstract
A roof vent for preventing the buildup of hydrogen gas produced by battery charging in a remote digital telephone cabinet is provided with a movable splash guard for blocking the vent outlet when impinged upon by water and/or wind, thereby preventing the entry of water into the cabinet. The vent also includes a weatherproof cover whose lower edge is formed with scallops or undulations to maintain air gaps between the cover and the cabinet roof.
Claims20
A vent for preventing the buildup of hydrogen gas in a remote terminal cabinet, comprising:
- a generally cylindrical body portion adapted to be affixed to a roof of a cabinet, said body portion having a vent inlet for communicating with the interior of the cabinet through an aperture in the cabinet roof, a vent outlet located above said vent inlet and disposed on a cylindrical side surface of said body portion for communicating with the exterior of said cabinet at a point above the cabinet roof, and an internal air passage communicating between said vent inlet and said vent outlet;
- an inverted cup-like cover portion affixed to an upper end of said body portion for covering said body portion and said vent outlet, said cover portion having downwardly extending, generally cylindrical side walls which extend around an outer periphery of said body portion with a gap therebetween;
- and
- a splash guard received in said gap for shielding said vent outlet against the entry of water, said splash guard comprising an upstanding, generally cylindrical collar which surrounds said body portion and is movable laterally between said body portion and said cover portion when impinged upon by wind or water to cover said vent outlet.
A vent for preventing the buildup of hydrogen gas in a remote terminal cabinet, comprising:
- means for providing an air passage between the interior of said cabinet and the exterior of said cabinet, said air passage having a vent outlet on a roof of said cabinet for communicating with the exterior of said cabinet;
- and
- an inverted cup-like cover for covering said vent outlet, said cover having a closed top and downwardly extending side walls which are scalloped to provide air gaps between said cover and the roof of said cabinet.
A method for preventing the entry of water into a remote terminal cabinet through a hydrogen gas vent mounted on a roof of said cabinet, comprising the steps of:
- providing said vent with a first vent opening and a movable member for covering and uncovering said first vent opening;
- allowing said movable member to move in response to forces applied by wind, rain or water to cover said first vent opening and thereby prevent the entry of water into said cabinet.
Dependencies are inferred from the claim text.