US PATENT SUBCLASS 65 / 21.1
.~ Self-supporting particle making (e.g., bead, ball, granule, etc.)

Current as of: June, 1999
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65 /   HD   GLASS MANUFACTURING

17.1  DF  PROCESSES {32}
21.1.~ Self-supporting particle making (e.g., bead, ball, granule, etc.) {4}
21.2  DF  .~.~> By molten glass comminuting
21.3  DF  .~.~> Spheroidizing or rounding of solid glass particles
21.4  DF  .~.~> Hollow or porous particle
21.5  DF  .~.~> With mechanical shaping or subdividing

DEFINITION

Classification: 65/21.1

Self-supporting particle making (e.g., bead, ball, granule, etc.):

(under subclass 17.1) Processes for a process directed to forming individually distinct separate particulate material, particles of which are self-supporting at least in one stage of manufacture.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19+, for processes in which slag is utilized as the starting material.

141, for apparatus for melt comminuting by shock cooling melt by enhancing surface contact with a cooling fluid.

142+, for particulate bead or ball making apparatus.

376+, for a process of making a fiber.

SEE OR SEARCH CLASS

241, Solid Material Comminution or Disintegration, 23, and 65+ for processes and apparatus for comminuting hard glass combined with heating and/or cooling of the glass where the temperature modification does not effect a change in a physical or chemical property of the glass (e.g., removing water of hydration, annealing).

425, Plastic Article or Earthenware Shaping or Treating: Apparatus,

222, for a tumbling type agglomerating means for particulate material; and subclasses 332+ for means rolling a discrete charge of stock to form a ball; see the search notes thereunder.