Seal and a chamber having a seal

Details Seal and a chamber having a seal Seal and a chamber having a seal

1996-10-17

1997-09-09

Bueker, Richard

Coating apparatus

Gas or vapor deposition

Running length work

C23C 1600

Patent

active

056651651

ABSTRACT:
A vacuum chamber is provided with a pair of seals to enable a fibre to be continuously supplied into and removed from the vacuum chamber for application of a coating. The seals comprise a first chamber which is supplied with argon and a second chamber which is evacuated by a pump. The first chamber is connected to atmosphere by a first hypodermic tube, the first chamber is connected to the second chamber by a second hypodermic tube and the second chamber is connected to the interior of the vacuum chamber by a third hypodermic tube. The hypodermic tubes are coaxial and are telescoped together. The fibre is arranged to pass sequentially through the hypodermic tubes into the vacuum chamber. The argon supplied to the first chamber reduces the air flow down the hypodermic tubes. The seal maintains the pressure in the vacuum chamber and does not contaminate the fibre.

REFERENCES:
patent: 3667626 (1972-06-01), Torelli et al.
patent: 4480585 (1984-11-01), Gattuso
patent: 4494478 (1985-01-01), Lacour et al.
patent: 4587135 (1986-05-01), Diener et al.
patent: 4787227 (1988-11-01), Lievens et al.
patent: 4811583 (1989-03-01), Lievens et al.

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