Gas injection apparatus and process to form a controlled atmosph

Details Gas injection apparatus and process to form a controlled atmosph Gas injection apparatus and process to form a controlled atmosph

1994-12-22

1996-10-29

Joyce, Harold

Ventilation

Workstation ventilator

Having inlet airway

228219, 454187, B23K 3102

Patent

active

055690750

ABSTRACT:
A gas injection apparatus and process to form a controlled atmosphere in a confined space, comprising at least one assembly of ducts installed in series and/or in parallel, of which at least a part (2, 12, 13) of a duct comprises gas injection apertures. The assembly is supplied by at least one gas supply main (9, 14, 15), each main being connected to the assembly at the level of a primary connection node (8, 16, 17), the dimensions of the assembly observing the following relationship:

REFERENCES:
patent: 3597833 (1971-08-01), Frederick et al.
patent: 4580716 (1986-04-01), Barresi et al.
patent: 5161727 (1992-11-01), Leturmy et al.
patent: 5203489 (1993-04-01), Gileta et al.
patent: 5364007 (1994-11-01), Jacobs et al.
patent: 5393948 (1995-02-01), Bjorkman, Jr.

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