Line blind

Details Line blind Line blind

1979-08-27

1982-08-10

Bell, Jr., Houston S.

Pipes and tubular conduits

With closures and plugs

Laterally insertable

F16L 5510

Patent

active

043433324

ABSTRACT:
A line blind includes seal rings on either side of a spectacle plate interposed in a pipe, and a special camming arrangement including two cooperating sets of longitudinally directed sloping teeth circularly arranged which operate on slight rotational movement of one, while the other is held stationary, to force engagement under pressure between the seal rings and the plate.

REFERENCES:
patent: 608899 (1898-08-01), Ottney
patent: 1727677 (1929-09-01), Siebert et al.
patent: 2035548 (1936-03-01), Johnson
patent: 2455658 (1948-12-01), Dons et al.
patent: 2600497 (1952-06-01), Hamer
patent: 2865393 (1958-12-01), Edge et al.
patent: 3099292 (1963-07-01), Ausburn
patent: 3165124 (1965-01-01), Ausburn et al.
patent: 3319661 (1967-05-01), Shindler
patent: 3598154 (1971-08-01), Brundage
patent: 4036260 (1977-07-01), Davis et al.

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