James Mark Lieberman

US Patent:

D394871, Jul 24, 1990

Filed:

Nov 4, 1988

Appl. No.:

7/266991

Inventors:

James L. Lieberman - Boulder CO

US Classification:

D23209

US Patent:

20180038605, Feb 8, 2018

Filed:

May 11, 2017

Appl. No.:

15/592794

Inventors:

- Boulder CO, US
James L. Lieberman - Boulder CO, US

Assignee:

Environmental Information Services, Inc. - Boulder CO

International Classification:

F24F 7/06
F24F 11/00

Abstract:

The extraction room and ventilation system comprises an extraction room involving opposing supply and exhaust systems that provide a laminar type air flow configured to transmit fresh air flow to said extraction room at a rate of more than 1000 cubic feet per minute at a static pressure of more than 0.5 inch water. The extraction room is configured to use intrinsically safe or Class 1 Division 1, group D electrical appliances; a flammable gas detector, with an alarm and automatic ventilation system connected to said flammable gas detector; and be constructed in accordance with the International Fire Code & International Building Code definition for a One Hour Fire Rated Room construction. In another embodiment the ventilation system may be prefabricated or installed in a standardized movable unit such as a trailer or shipping container.