US PATENT SUBCLASS 338 / 115
.~ Element in piled or stacked layers


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

68  DF  MECHANICALLY VARIABLE (E.G., RHEOSTAT) {24}
115.~ Element in piled or stacked layers


DEFINITION

Classification: 338/115

(under subclass 68) Subject matter wherein the element is formed of a plurality of layers of resistance material which layers are piled or stacked transversely to the direction of current flow through the resistance element, i.e., so that the current flowing through the resistance element will flow from pile to pile.

(1) Note. Usually the resistance element is formed of a plurality of plates or disks of resistance material which are connected together directly or through other plates or disks of conductive material. The plates or disks are piled transversely along the length of the element, as between the resistance terminals or transversely to the path of movement of a contact moving along the resistance element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

7+, for a pile type resistor whose resistance value is temperature compensated.

52, for a pile type resistor with heat dissipating projections.

101+, for pile type compressible resistors. 204+, for fixed resistors whose elements are formed in layers piled or stacked between terminals.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

117+, for high voltage dissipators, per se, wherein the discharge path may be resistive disks or buttons.

428, Stock Material or Miscellaneous Articles, appropriate subclasses, for a plural layer stock material product, note

411, for a plural layer material, one layer being of resistive material and one or more layers being conductive, so as to constitute one or more terminals; see especially subclasses 457+.

442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.),

117, for a coated or impregnated fabric which is electrical insulating or conductivity reducing.