US PATENT SUBCLASS 454 / 49
WORKSTATION VENTILATOR (E.G., HOOD, OFFTAKE, ETC.)

Current as of: June, 1999
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454 /   HD   VENTILATION

49WORKSTATION VENTILATOR (E.G., HOOD, OFFTAKE, ETC.) {5}
50  DF  .~> Spray booth {2}
56  DF  .~> Covered workbench chamber (e.g., fume hood, etc.) {2}
63  DF  .~> Movable {2}
66  DF  .~> Having inlet airway
67  DF  .~> Having canopy exhaust hood

DEFINITION

Classification: 454/49

WORKSTATION VENTILATOR (E.G., HOOD, OFFTAKE, ETC.):

(under the class definition) Subject matter particularly adapted to exhausting fumes, vapors, steam, dust, or other undesirable air pollutants from a task area where such pollutants have been generated.

(1) Note. The task area may be a welding, painting, industrial process, or other area where a pollutant generating job is performed.

(2) Note. Subject matter comprising specific details of the pollutant generating device beyond those relating to ventilation structures are properly classified with the device.

(3) Note. Means for conducting away naturally occurring, normally present particles from an area so as to render the area particle free (e.g., clean room, etc.) is not included in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

168+, for a mine ventilator.

197, for a window related, bed or couch ventilator.

SEE OR SEARCH CLASS 4, Baths, Closets, Sinks, and Spittoons, particularly

209+, for bathroom ventilators.

15, Brushing, Scrubbing, and General Cleaning, particularly

300.1, for a cleaning machine using air blast or suction devices.

30, Cutlery, particularly

41.5, 124+, and 133 for a cutlery device combined with various types of material disposal means.

83, Cutting, particularly

98+, for cutting devices having fluid current product handling means.

96, Gas Separation: Apparatus, for gas separation apparatus.

104, Railways, particularly

52, for a smoke remover for use in roundhouses and train sheds over locomotive smoke stacks. 126, Stoves and Furnaces, particularly

299+, for a stove hood.

144, Woodworking, particularly

252.1+, for a device for catching and confining the flying shavings and sawdust from a cutting machine and for conveying them away from the machine.

266, Metallurgical Apparatus, particularly

158, and 159 for metallurgical apparatus with hood or offtake means for handling gases exhausted by treating means.

451, Abrading,

453, and 456 for a particle collector or a dust hood with air exhausting means for drawing off dust developed in a grinding operation.