US PATENT SUBCLASS 29 / 615
.~.~.~.~.~ With direct compression of powdered insulation

Current as of: June, 1999
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29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
592.1  DF  .~ Electrical device making {14}
610.1  DF  .~.~ Resistor making {6}
613  DF  .~.~.~ With envelope or housing {4}
614  DF  .~.~.~.~ Filling with powdered insulation {1}
615.~.~.~.~.~ With direct compression of powdered insulation

DEFINITION

Classification: 29/615

With direct compression of powdered insulation:

(under subclass 614) Process including compressing directly the powdered insulation, as by means of a die applied directly to the powder.

(1) Note. For classification in this subclass, the device exerting the compressive force must be applied directly to the powder. Compression by reduction of a metallic sheath, for example, is in subclass 614. See also subclasses 616 and 617 involving compression of the insulation to reduce it to a powder. Inclusion of a step of compressing by reducing the sheath, in addition to the direct application of a compressive, force does not preclude classification in this subclass.

SEE OR SEARCH CLASS

141, Fluent Material Handling, With Receiver or Receiver Coacting Means,

12, for a material handling process with material treatment including compacting.

264, Plastic and Nonmetallic Article Shaping or Treating: Processes,

109, for a process directed to forming an article by uniting discrete bulk assembled particles. See the search notes to Class 264 under (4) Note of this Class 29, subclass 602.1. 419, Powder Metallurgy Processes, for a process of forming an article by uniting discrete metal particles, especially

61+,.