US PATENT SUBCLASS 338 / 283
ZIGZAG OR SINUOUS RESISTANCE ELEMENT

Current as of: June, 1999
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338 /   HD   ELECTRICAL RESISTORS

283ZIGZAG OR SINUOUS RESISTANCE ELEMENT {10}
284  DF  .~> Element includes integral stiffening structure
285  DF  .~> Element extends along groove in base
286  DF  .~> Helical
287  DF  .~> Compound or multiple zigzag {1}
289  DF  .~> Element includes conductive jumpers or spacers
290  DF  .~> Element projects in or through an opening or a slot in a support or frame
291  DF  .~> With transverse element stiffening or reinforcing rod or strip
292  DF  .~> Element forms a coating
293  DF  .~> Planar
294  DF  .~> Cylindrical

DEFINITION

Classification: 338/283

(under the class definition) Subject matter where the resistance element is composed of at least three elongated portions extending side by side and/or coextensive and electrically separate, the alternate adjacent ends being electrically connected by being in contact or integral, or by resistive or conductive material to provide a series path through the elongated portions.

(1) Note. The elongated portions need not be straight, but may be curved or zigzag. Further, if straight, the portions need not extend in parallel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51, for a resistor with a heat radiation type resistance element formed as a zigzag.

58, for ventilated zigzag type resistors.

114+, for a deformable variable resistor whose element has a zigzag shape.

226+, for incased, embedded, or housed zigzag or sinuous resistors. 280+, for zigzag or sinuous bent ribbon resistors.

295, for plural resistance elements generally connected by a jumper.

296+, for helical or wound resistors.

SEE OR SEARCH CLASS

219, Electric Heating,

200+, for electric heaters of zigzag or sinuous shape, and subclass 540 for radiating plate heaters whose resistance elements may have a zigzag or sinuous shape.