Pipes and tubular conduits – With closures and plugs – Inflatable
Patent
1988-05-18
1990-06-12
Michalsky, Gerald A.
Pipes and tubular conduits
With closures and plugs
Inflatable
376204, F16L 5512
Patent
active
049324411
ABSTRACT:
A pneumatically actuated nozzle dam or the like for placement internally of a passageway, enabling the passageway to be sealed off upon inflation of a pneumatically inflatable ring. The apparatus includes an elastomeric diaphragm provided with sidewalls projecting in a downstream direction and joined with sealing flaps surrounding the sidewall and projecting back in an upstream direction. An inflatable pneumatic element is positioned between the sidewall and sealing flap and connected to only one of them. Upon inflation, the sealing flap is forced against the walls of the passageway to provide a seal. If depressurization of the inflatable element occurs, the sealing flap is retained in operative position by pressure of the retained body of liquid on the upstream side of the seal. The new arrangement eliminates the need for redundancy of the pneumatic element and, at the same time, provides for greater safety.
REFERENCES:
patent: 4582451 (1986-04-01), Hollander, Jr.
patent: 4637588 (1987-01-01), Wilhelm et al.
patent: 4656714 (1987-04-01), Evans et al.
patent: 4770235 (1988-09-01), Rogers et al.
patent: 4826036 (1989-05-01), Lewis et al.
Carlson Edward R.
Corey Albert J.
Michalsky Gerald A.
The Presray Corporation
LandOfFree
Nozzle dam seal assembly for nuclear steam generator or the like does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nozzle dam seal assembly for nuclear steam generator or the like, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nozzle dam seal assembly for nuclear steam generator or the like will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-610472