Pipes and tubular conduits – With closures and plugs – Inflatable
Patent
1985-05-06
1986-09-23
Marcus, Stephen
Pipes and tubular conduits
With closures and plugs
Inflatable
138 89, 138 90, F16L 5512
Patent
active
046129618
ABSTRACT:
The sealing device for a tube of the invention is constructed bowl-shaped and consists of a jacket, which can be pressed areally against the inner wall of a tube to be sealed. The jacket on the forward side extends into a sealing lip. There is an end partition. The sealing lip has a free end, and by means of a spreading device can be pressed, including the free end, against the inner wall of a tube. In a preferred embodiment, the device has a hydraulically or pneumatically fillable inner space.
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Cornaby K. S.
Marcus Stephen
Peters Leo James
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