US PATENT SUBCLASS 338 / 306
WITH BASE EXTENDING ALONG RESISTANCE ELEMENT

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

306WITH BASE EXTENDING ALONG RESISTANCE ELEMENT {7}
307  DF  .~> Resistance element and/or terminals printed or marked on base
308  DF  .~> Resistance element coated on base {1}
310  DF  .~> Resistance element extends through base
311  DF  .~> Resistance element mounted in a groove in base
312  DF  .~> Terminal extends in or through base
313  DF  .~> Terminal embraces base
314  DF  .~> Resistance element and base formed in layers

DEFINITION

Classification: 338/306

(under the class definition) Subject matter including a resistance element, and a non-resistive element in close physical relationship therewith to impart a rigidity or reinforcing to the resistance element not otherwise present.

(1) Note. Usually the resistance element is thin or flexible and extends along and in contact with the side of a base of insulating material, the base supplying the necessary rigidity. In the combination of an element and mounting means or a support as defined in subclasses 315+, the mounting means or support maintains the element as a whole, positioned with respect to other structure, as opposed to providing mere rigidity as in this subclasses (306+).

SEE OR SEARCH THIS CLASS, SUBCLASS:

207, for a resistor whose element and base are permanently folded or rolled.

210+, for flexible or folding resistors.

226, for incased, embedded, or housed resistors which may include a base.

279+, for a resistor formed as a bent ribbon which may include a base. 283+, for a zigzag or sinuous shaped resistor which may include a base.

296+, for helical or wound resistors with a form for the helix or winding.

SEE OR SEARCH CLASS

219, Electric Heating,

461.1, for an exposed planar support surface for material to be heated (e.g., hot plate, etc.) where a heating element is gapped from an underside of the support surface (e.g., ceramic plate, radiation type, etc.) and has a supporting, retaining, or mounting means for heating element or subclass 467.1 for an exposed planar support surface for material to be heated (e.g., hot plate, etc.) where a heating unit is contacting a planar underside of the support surface (e.g., sheet metal, etc.) and has a supporting, retaining, or mounting means for a heating element.

428, Stock Material or Miscellaneous Articles, appropriate subclasses for a plural layer product which may involve a layer of resistance material and a layer of nonresistance

material, see especially

457+, in which one of the layers is a metal.