Adjustable drop nipple
AssigneeA-T-O Inc.
InventorGeorge S. Mountford
Life of this patent
Estimating the term…
Abstract
An adjustable drop nipple is disclosed for connecting a pendant sprinkler to a sprinkler system. The nipple includes outer and inner telescoped pipes with a gripping means therebetween which permits an adjustment of the telescoped relation of the pipes for a desired position of the pendant sprinkler below a drop ceiling.
Claims10
An adjustable drop nipple for a fire extinguishing sprinkler system to connect a sprinkler at the underside of a room ceiling with a nipple in water distributing piping above the room ceiling, said adjustable drop nipple comprising a sealing coupling having one end engaging said nipple, an elongated sleeve on the exterior of said sealing coupling extending toward said distributing piping and partially overlying said nipple, a tube telescopically arranged in said sealing coupling and nipple and extending outwardly of the other end of said sealing coupling, a tapered surface formed in said sealing coupling with the largest diameter of said tapered surface being adjacent said other end thereof, a rotatable lock nut on said sealing coupling through which said tube extends and enclosing a split ring movable toward and away from said tapered surface upon rotation of said rotatable lock nut, said split ring arranged for wedging action between said tube and said tapered surface of said coupling and resilient seal means in said sealing coupling engaging said tube and spaced with respect to said tapered surface and said split ring.
Dependencies are inferred from the claim text.