Protective cover for an exhaust fan motor

Details Protective cover for an exhaust fan motor Protective cover for an exhaust fan motor

1981-12-18

1985-01-22

Joyce, Harold

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

98 1, 415121G, 415219R, 417313, F24F 702

Patent

active

044944500

ABSTRACT:
A protective cover for an exhaust fan motor or the like actuable to withdraw the same by normally restrained positive pressure from the motor upon the monitoring of hot fumes representing a fire, thereby to expose the motor to a cooling environment little different from or substantially the same as that of its normal operation.

REFERENCES:
patent: 3182581 (1965-05-01), Poederoyen et al.
patent: 3715967 (1973-02-01), Field
patent: 3728956 (1973-04-01), Field
patent: 4044785 (1977-08-01), Larsen

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