| 摘要 |
<p>A flanged fitting comprises a flanged tubular member for positioning in an opening in a floor or roof to form a tubular conduit therethrough. The fitting may be provided with an upstanding tubular member to which a secondary tubular member may be attached in the nature of a vent. A sleeve is engaged about the tubular member as by a clamping member thereon with one portion of the sleeve being a larger diameter than the other and having a plurality of circumferentially spaced finger-like sections which are frangible. This invention is distinguishable from others by reason of the sleeve engaging the tubular member in such a way that it is adjustable upwardly against the underside of the floor or roof thereby clamping the flanged fitting thereagainst, with the frangible spaced fingers of the sleeve providing engagement around irregular surfaces of the floor or roof.</p> |
