Duct closure
Abstract
A closure for an inclined duct having an open upper end and defining downwardly extending passageway. The closure includes a cap for sealing engagement with the open upper end of the duct. Associated with the cap are an array of vertically aligned plug members, each of which has a cross-sectional area substantially conforming to the cross-sectional area of the passageway at least adjacent the upper end of the passageway. The plug members are interconnected in a manner to provide for free movement only in the plane in which the duct is inclined. The uppermost plug member is attached to the cap means and the cap means is in turn connected to a hoist means which is located directly over the open end of the duct.
- Inventors:
-
- Canoga Park, CA
- Issue Date:
- Research Org.:
- Rockwell International Corp., Canoga Park, CA (United States)
- OSTI Identifier:
- 866428
- Patent Number(s):
- 4707323
- Assignee:
- Rockwell International Corporation (El Segundo, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- AC03-79ET37109
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- duct; closure; inclined; upper; defining; downwardly; extending; passageway; cap; sealing; engagement; associated; array; vertically; aligned; plug; cross-sectional; substantially; conforming; adjacent; interconnected; manner; provide; free; movement; plane; uppermost; attached; means; connected; hoist; located; directly; vertically aligned; downwardly extending; sealing engagement; sealing engage; /376/138/220/976/
Citation Formats
Vowell, Kennison L. Duct closure. United States: N. p., 1987.
Web.
Vowell, Kennison L. Duct closure. United States.
Vowell, Kennison L. Thu .
"Duct closure". United States. https://www.osti.gov/servlets/purl/866428.
@article{osti_866428,
title = {Duct closure},
author = {Vowell, Kennison L},
abstractNote = {A closure for an inclined duct having an open upper end and defining downwardly extending passageway. The closure includes a cap for sealing engagement with the open upper end of the duct. Associated with the cap are an array of vertically aligned plug members, each of which has a cross-sectional area substantially conforming to the cross-sectional area of the passageway at least adjacent the upper end of the passageway. The plug members are interconnected in a manner to provide for free movement only in the plane in which the duct is inclined. The uppermost plug member is attached to the cap means and the cap means is in turn connected to a hoist means which is located directly over the open end of the duct.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1987},
month = {Thu Jan 01 00:00:00 EST 1987}
}
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