Wall feedthrough

Details Wall feedthrough Wall feedthrough

1987-04-13

1989-01-24

Levy, Stuart S.

Elongated-member-driving apparatus

Explosive-type driving means

285162, 285915, F16J 902, F16L 304, F16L 502

Patent

active

047996897

ABSTRACT:
A duct seal for sealing a duct (4) to a substrate (20) such as a feedthrough comprises a sealing member (6), a biasing member (8), such as a wrapped spring sheet and an insert (12) positioned between the substrate (20) and the sealing member (6). The biasing member (8) can be operated, through the insert (12) from the outside of the duct. When the substrate is a feedthrough (20), for example, it is advantageous that the biasing member (8) is operated through the insert rather than through the feedthrough (20) itself, since it allows the feedthrough to be temporarily sealed against contaminants.

REFERENCES:
patent: 3663026 (1972-05-01), Mincuzzi
patent: 4114898 (1978-09-01), Bainard et al.
patent: 4426086 (1984-01-01), Fournie et al.
patent: 4643436 (1987-02-01), Jackowski

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