Receptacles – Closures – Having inflatable gasket or packing
Patent
1982-02-17
1984-11-13
Smith, Robert I.
Receptacles
Closures
Having inflatable gasket or packing
138 93, 217 78, 277 34, F16L 5512
Patent
active
044820763
ABSTRACT:
A plug means for effecting a temporary blockage of a passage through which liquid is designed to flow. The subject plug means includes a frame means capable of being readily disassembled and embodying in the assembled state dimensions corresponding to the cross-sectional dimensions of the passage in which the plug means is to be employed, and inflatable means mountable on the frame means and co-operable therewith for providing a liquid tight seal in the passage. The frame means comprises a frame member including a plurality of readily interconnectable sections of plate, the latter each possessing a high strength-to-weight ratio; interconnecting means for effecting the interconnection of the plurality of plate sections; and securing means cooperable with means provided in the side walls of the passage for securing the frame means and thereby the plug means in the passage in blocking relation thereto. The inflatable means includes at least one resilient member that is provided with a rim in the form of an inflatable bead. The inflatable means is mountable on the frame member so as to be positionable substantially in circumferentially enveloping relation relative thereto. The inflatable means further includes an externally accessible inflation means connected to the inflatable bead, and operable to effect the inflation thereof.
REFERENCES:
patent: 694171 (1902-02-01), Mink
patent: 2366911 (1945-01-01), Laird
patent: 2604224 (1952-07-01), Howe
patent: 2697534 (1954-12-01), Topley
patent: 2714024 (1955-07-01), Greene
patent: 3343708 (1967-09-01), Haas
patent: 3371986 (1968-03-01), Brown
patent: 4342336 (1982-08-01), Satterthwaite
Combustion Engineering Inc.
Fournier, Jr. Arthur E.
Smith Robert I.
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