Sealing plug for a steam-generator tube

Details Sealing plug for a steam-generator tube Sealing plug for a steam-generator tube

1989-10-12

1991-01-22

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

165 71, F16L 5500

Patent

active

049863134

ABSTRACT:
The plug comprises a tubular body (2), closed at one of its ends by a bottom (3), a bush (5) placed inside the body (2) in an expansion zone and an expander core (6). The bush (5) has at least two elastic cylindrical sectors, separated by at least two longitudinal slots (8), and an actuating surface (5c) widened in the direction of the bottom (3) of the plug. The expander core (6) engaged inside the slotted bush (5) has a corresponding actuating surface (6c) on its outer surface. The plug (1) can be expanded by shifting the expander core (6) towards the open end of the body (2) of the plug opposite its bottom (3), and can be removed simply by pushing the expander core (6) against the bottom (3) of the body (2) of the plug (1).

REFERENCES:
patent: 1794369 (1931-03-01), Edgar
patent: 3119177 (1964-01-01), Knecht
patent: 3156373 (1964-11-01), Willis
patent: 4765374 (1988-08-01), Ermold et al.
patent: 4771810 (1988-09-01), Ermold et al.

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