US PATENT SUBCLASS 353 / 57
.~ Blower

Current as of: June, 1999
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353 /   HD   OPTICS: IMAGE PROJECTORS

52  DF  TEMPERATURE CONTROL {5}
57.~ Blower {4}
58  DF  .~.~> Plural
59  DF  .~.~> Common motor for blower and slide changer
60  DF  .~.~> Air directed against face or back of object
61  DF  .~.~> Particular air ducts or deflector

DEFINITION

Classification: 353/57

(under subclass 52) Subject matter including a fan or rotor and means to rotate the fan or rotor to move cooler air into the projector and to move warmer air out of the projector to cool the parts of the projector.

SEE OR SEARCH CLASS

352, Optics: Motion Pictures,

202, for a motion-picture projector light source with ventilating and cooling, and subclasses 146+ for film cooling.

362, Illumination,

294, for a light projector or a subcombination of an image projector with no image-projecting structure including ventilating or cooling means. See also, section VII of the Class Definitions of this Class 353.