US PATENT SUBCLASS 335 / 209
MAGNETS AND ELECTROMAGNETS

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

209MAGNETS AND ELECTROMAGNETS {10}
210  DF  .~> Electron or ion beam deflecting type {3}
215  DF  .~> Magnetostrictive-type device
216  DF  .~> Superconductive type
217  DF  .~> Temperature-responsive type (e.g., temp. compensation means) {1}
219  DF  .~> Combined with diverse-type art device
220  DF  .~> With magneto-mechanical motive device (e.g., electromagnet with armature) {21}
283  DF  .~> Blade sharpening or conditioning type magnets
284  DF  .~> For magnetizing or demagnetizing
285  DF  .~> Work or object holding type {4}
296  DF  .~> Magnet structure or material {4}

DEFINITION

Classification: 335/209

(under the class definition) Subject matter comprising magnets, which may be permanent magnets, electromagnets or a combination of the two types, or electromagnets with armatures, designed or arranged to perform external mechanical work.

(1) Note. Coils, or coils with core whose proximate and sole purpose is to introduce inductance in an electrical circuit and which are not designed to perform external work are classified in Class 336, Inductor Devices.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1, through 208, for magnets or electromagnets used in magnetically operated switches.

SEE OR SEARCH CLASS

29, Metal Working,

602.1+, for methods of manufacturing transformers and inductances, and residual methods of manufacturing magnets and electromagnets which do not fall into Classes 148, 252 or 361. For the lines between these classes see the extensive notes to Class 29, subclass 602.1 and Class 148, Metal Treatment, subclass 100. 148, Metal Treatment,

100, 122 for processes of improving the magnetic properties of material having at least one component which is a free metal or alloy, other than by mere magnetization, and subclasses 31.55 and 31.57 for stock resulting from such processes.

198, Conveyors: Power-Driven,

381, 439 and 619 for magnetic type conveyors.

209, Classifying, Separating and Assorting Solids,

38, 39, 40, 212, 213+, and 478 for magnetic sorting or separation of solids.

210, Liquid Purification or Separation,

222+, for such subject matter having magnetic means to effect the purification or separation.

221, Article Dispensing, appropriate subclasses and see especially

212, for magnetic article holding discharge assistants and the controls therefor.

242, Winding, Tensioning, or Guiding, 430+, for a process or apparatus for forming an article (e.g., a motor core, inductor, capacitor, or resistor) by winding material onto a core.

250, Radiant Energy,

281+, for ionic separation or analysis methods and apparatus which use magnets or electromagnets.

252, Compositions,

62.51+, for processes of making magnetic compositions, and the resulting product when it is claimed as stock or bulk material.

324, Electricity: Measuring and Testing,

200, for magnetic testing devices utilizing magnets and electromagnets or inductors, and subclasses 76.11+ for electric meters utilizing magnets and electromagnets.

336, Inductor Devices, appropriate subclasses for the structure of transformers and inductive reactors of general utility. See (1) Note above.

600, Surgery,

9+, for electromagnets utilized in surgery and diagnostics.