Plug for use in thermal-medium passages in air conditioning syst

Details Plug for use in thermal-medium passages in air conditioning syst Plug for use in thermal-medium passages in air conditioning syst

1983-07-19

1985-07-30

Marcus, Stephen

Pipes and tubular conduits

With closures and plugs

Inflation stem type

F16L 5509, F16L 5512

Patent

active

045315507

ABSTRACT:
A plug assembly for use in a thermal-medium passage in a unit curtain wall, for example, comprises a circular gasket seat having a central cylinder with an annular elastomeric gasket placed on the gasket seat around the central cylinder, and a sleeve fitted over the central cylinder and fastened thereto by a fastener such as a hexagonal socket head cap screw threaded through a bottom of the sleeve axially into the central cylinder. When the plug assembly is to be put in the thermal-medium passage, the plug assembly is inserted into the passage with the fastener slightly loosened. After the plug assembly has been pushed to a desired position in the passage, the fastener is tightened by a tightening tool until the annular elastomeric gasket is resiliently squeezed between the sleeve and the gasket seat radially outwardly against an inner circumferential wall of the passage. A heat-transporting medium such as hot water can be prevented by the annular elastomeric gasket from flowing through the passage. The plug assembly is retained in position by a setscrew threaded through a passage wall against the sleeve.

REFERENCES:
patent: 922544 (1909-05-01), Turner et al.
patent: 2512041 (1950-06-01), Steele
patent: 2743034 (1956-04-01), Wheatley
patent: 2763293 (1956-09-01), Kruck
patent: 2923323 (1960-02-01), Franck
patent: 3326404 (1967-06-01), Gardner
patent: 3494504 (1970-02-01), Jackson
patent: 3901167 (1975-08-01), Reese
patent: 4310029 (1982-01-01), Dudek
patent: 4385643 (1983-05-01), Noe

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