Zone-forming apparatus

Details Zone-forming apparatus Zone-forming apparatus

1992-10-23

1994-09-27

Joyce, Harold

Ventilation

Having protecting air current

Surrounding protected area

454233, F24F 306, F24F 1300

Patent

active

053503376

ABSTRACT:
A zone-forming apparatus adapted to direct a jet-stream in a radial direction by a guide member, the jet-stream being emitted from jet-stream generator which is arranged above the apparatus, and an air curtain thus formed is utilized to define a working space.

REFERENCES:
patent: 2210458 (1940-08-01), Keilholtz
patent: 2817281 (1957-12-01), Schwan et al.

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