Trimodal piston driven sash operator

Details Trimodal piston driven sash operator Trimodal piston driven sash operator

1986-11-12

1988-10-04

Schwartz, Larry I.

49200, F23J 1100

Patent

active

047748788

ABSTRACT:
What is disclosed is a new and novel fume hood sash operator system and a fume hood containing such a system. The sash operator is constructed to operate from a pressure fluid cylinder so that the sash member can be stopped, started, moved up or down to accommodate changes in the flow of air moving through the hood structure and to provide a safe, durable, energy savings sash operating system.

REFERENCES:
patent: 3820446 (1974-06-01), Granbom et al.
patent: 3934496 (1976-01-01), Turko
patent: 4150606 (1979-04-01), Nelson
patent: 4363267 (1982-12-01), Greer
patent: 4377969 (1983-03-01), Nelson
patent: 4502375 (1985-03-01), Hignite et al.
patent: 4548128 (1985-10-01), Morikawa

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