US PATENT SUBCLASS 29 / 900
METHODS AND APPARATUS FOR ASSEMBLY BY ELECTROSTATIC ATTRACTION


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

900METHODS AND APPARATUS FOR ASSEMBLY BY ELECTROSTATIC ATTRACTION


DEFINITION

Classification: 29/900

METHODS AND APPARATUS FOR ASSEMBLY BY ELECTROSTATIC ATTRACTION:

Cross-reference art collection of documents wherein self-sustaining parts are juxtaposed, associated, or fastened to each other by the use of electrostatic attraction wherein one part is given an electrostatic charge.

(1) Note. The purpose of the processes of this subclass is usually the attachment of sheets and/or objects to each other for ready detachment at a measurably later time.

(2) Note. Adherence of liquids or of fluent solids to a solid material is excluded from this subclass; the objects of this subclass must be handled as units.

(3) Note. The subject matter of this subclass has not been clearly provided for in any patent class heretofore; thus, this subclass is established as a collection place for such art. Because it is impossible to locate all art classifiable herein, a search of this subclass cannot be considered

authoritative for patents issued before its establishment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

428+, for a process of mechanical assembly, and see the notes thereto for locus of other subject matter concerned with assembly of objects.

700+, for apparatus for mechanical assembly, and see the notes thereto for the locus of other subject matter concerned with assembly of objects. SEE OR SEARCH CLASS

53, Package Making, for a process or apparatus using electrostatic charging in package making.

83, Cutting, for electrostatic charging in a cutting process or apparatus.

118, Coating Apparatus,

621+, for electrostatic projection or attraction of liquid or fluent solid coating material to work.

156, Adhesive Bonding and Miscellaneous Chemical Manufacture,

60+, for a surface-bonding process using tacky or other adhesive substances.

198, Conveyors: Power-Driven,

691, for electrostatic means to enhance the adherence between a conveyor and its load.

226, Advancing Material of Indeterminate Length,

94, for electrostatic means enhancing adherence work being moved by an advancing means.

242, Winding, Tensioning, or Guiding, for a process or apparatus using electrostatic charging in winding or reeling. 250, Radiant Energy,

324+, for electrostatic charging of objects by corona discharge.

271, Sheet Feeding or Delivering,

18.1, for electrostatic separators and subclass 193 for electrostatic deliver conveyors.

361, Electricity: Electrical Systems and Devices,

225+, for electrostatic charging by other than corona discharge.

399, Electrophotography, for electric photography which involves charged photoconductive materials.

414, Material or Article Handling, for electrostatic charging used in material or article handling.

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

174.8, for means of applying electrostatic charges to an object in a plastic or earthenware shaping or treating machine.

427, Coating Processes, 13+, for a process of coating with a liquid or with fluent solids which utilizes an electrostatic charge.

430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof,

31+, for a process of electric photography including the electrostatic charging of chemically defined photoconductive materials.