Coating apparatus – With means to apply electrical and/or radiant energy to work... – With electromagnetic and/or electrostatic removal of...
Patent
1978-12-28
1980-09-23
Capossela, Ronald C.
Coating apparatus
With means to apply electrical and/or radiant energy to work...
With electromagnetic and/or electrostatic removal of...
118326, 118DIG7, B01D 4500
Patent
active
042235995
ABSTRACT:
This invention teaches an improved exhaust system to be used with a paint spray booth and having a continuously operating power exhaust fan. The exhaust system has a damper that is opened when spraying actively is taking place in the spray booth and that is closed when there is no spraying actively taking place in the spray booth. A control switch is mounted in any of several locations to determine when the spray gun is in use or is not in use. Thus, the control switch is actuated when the spray gun is hung up . . . indicating a nonuse condition of the spray system; whereupon use of the spray gun lifts the gun from the hook to indicate spraying activity. A motor drives the damper to the opened position; and a spring biases the damper to the closed position. A timer is also used to delay the closing of the damper until between twenty and possibly two hundred seconds have lapsed after spraying activity has terminated. This purges the spray booth while yet allows for automatic damper control under normal spraying sequences of use and nonuse. A fire sensing switch is used to deenergize the damper motor to allow the damper to be closed in the event of a fire.
REFERENCES:
patent: 1789945 (1931-01-01), Ready
patent: 1859797 (1932-05-01), Ready
patent: 2694466 (1954-11-01), Bingman
patent: 3010451 (1961-11-01), Hodgins
patent: 3388746 (1968-06-01), Lihberg
patent: 3616745 (1971-11-01), Russell, Sr.
patent: 3773028 (1973-11-01), Schreibeis
patent: 3943375 (1976-03-01), Williamson
patent: 3951051 (1976-04-01), Dry
Capossela Ronald C.
Joyce Harold
Protectaire Systems Corp.
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