US PATENT SUBCLASS 359 / 541
.~.~.~.~ With single transparent coating between spheres and atmosphere

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

515  DF  SIGNAL REFLECTOR {11}
534  DF  .~ Including a curved refracting surface {4}
536  DF  .~.~ Minute transparent spheres {4}
540  DF  .~.~.~ Placed on top of binder (e.g., resin, asphalt, glue, etc.) {1}
541.~.~.~.~ With single transparent coating between spheres and atmosphere

DEFINITION

Classification: 359/541

With single transparent coating between spheres and atmosphere:

(under subclass 540) Subject matter wherein a single coating, which is transparent to light, surrounds and either (1) completely envelopes the normally exposed surface of the sphere, (2) touches only a portion of the spheres, or (3) is an interface for the minute spheres where the spheres are confined but not touching the exposed surface.

(1) Note. This single coating will cover the sphere relative to the environment yet have no optical effect on the light that would impinge on a normally exposed surface of the sphere. If reference is made to protection of the reflector from moisture or foreign particle it belongs in subclass 514.

(2) Note. A transparent coating used simply to hold the spheres onto the binder is not considered a sealer as in subclass 514.

SEE OR SEARCH THIS CLASS, SUBCLASS:

514, for a sealed signal reflector to protect it from moisture or foreign particle.

SEE OR SEARCH CLASS

428, Stock Material or Miscellaneous Articles, 34, for light transmissive sheets with gas space therebetween and edge sealed (e.g., double glazed storm window, etc.).