US PATENT SUBCLASS 338 / 226
INCASED, EMBEDDED, OR HOUSED

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

Internet Version by PATENTEC © 1999      Terms of Use


338 /   HD   ELECTRICAL RESISTORS

226INCASED, EMBEDDED, OR HOUSED {22}
227  DF  .~> With resistance value indicator
228  DF  .~> Casing extends through plate
229  DF  .~> Probe type
230  DF  .~> Metal casing or housing cast around element
231  DF  .~> In liquid
232  DF  .~> Casing or housing readily openable and/or separable from element {1}
234  DF  .~> With gaseous or vacuum spacing between element and casing or housing {2}
238  DF  .~> Element inpowdered insulation with outer metallic sheath {3}
243  DF  .~> Element in insulation with outer metallic sheath {6}
252  DF  .~> Element embedded or enclosed in groove or recess {1}
254  DF  .~> Flattened resistance element between flat layers {1}
256  DF  .~> Casing or housing formed in plural layers external to element {1}
258  DF  .~> Resistance element formed as a coating on interior of casing or housing
259  DF  .~> Wound, braided, or woven casing or housing
260  DF  .~> Plural resistors {1}
262  DF  .~> Casing or housing formed as a coating {1}
267  DF  .~> Helical or wound element {3}
271  DF  .~> Terminal forms casing or housing
272  DF  .~> Terminal or lead surrounds and secured to casing or housing
273  DF  .~> Terminal or lead extends into end of elongated casing or housing {1}
275  DF  .~> Casing or housing formed on and hardened on resistor (e.g., molded)
276  DF  .~> Terminal or lead extends through casing or housing wall

DEFINITION

Classification: 338/226

(under the class definition) Subject matter wherein the resistance element is substantially completely covered or surrounded with a solid, liquid, or gaseous substance or a vacuum layer to provide a barrier or separation between the element and the outside, or together with any structure maintaining such substances or layer around the resistor.

(1) Note. A resistive wire, coiled resistive wire, wire of resistive metal, or wire of no significant resistive composition is classified in Class 174, Electricity: Conductors and Insulators, especially subclasses 110+. Where the covered wire includes structure other than a mere coil, which is peculiar to resistance or heating, such as a zigzag shape, or where the wire is of a nonmetallic composition such as carbon, or of a significantly resistive composition such as iron, classification is in this class (338), especially subclasses 314+. Electrically conductive or resistive wire with an insulating coating is classified in Class 428, Stock

Material or Miscellaneous, Articles, subclasses 375+, even if no structural limitations are recited. Metal coated conductive or resistive metal bases as compound metal stock are classified in Class 29, Metal Working, subclasses 194+. See also (2) Note under subclass 238 below.

(2) Note. Resistors claiming heat insulating or heat conducting casings or housings are classified here. The combination of a resistance used for heating purposes surrounded or incased by the structure to be heated or for distributing, directing, or concentrating the heating by the resistance is classified in Class 219, Electric Heating, especially subclasses 19+. See also ELECTRICAL RESISTANCE HEATERS in the Class Definition.

(3) Note. A resistor with a casing or housing claimed as an electrical shield or equivalent terminology is classified elsewhere (see the Search This Class, Subclass notes below).

SEE OR SEARCH THIS CLASS, SUBCLASS:

12, for a resistor actuated by a movable magnet through a housing or partition. 19, for photoconductive resistors with a transparent housing.

53+, for resistors with cooling gas or liquid circulation.

57, for resistors in a ventilating or vented casing.

64+, for resistors with electrical shielding. See also (3) Note above.

66+, for ignition interference suppression type resistors.

77, for plug boxes.

161, for a mechanically variable resistor whose element is incased, the casing being partly removed to form a track for the contact.

163, 164, 184, and 199, for mechanically variable resistors with housings.

210+, for flexible or folding resistors; and especially subclass 211 for impregnated flexible resistors; subclass 212 for tape or sheet resistors; and subclass 214 for cable type resistors.

216, for a resistor in a coaxial transmission line or wave guide.

220, for a resistor in a detachable electrical connector.

223+, for granular or powdered resistors.

310, for resistors whose element extends through a base.

332, for a resistor whose terminal embraces or surrounds the resistance element.

SEE OR SEARCH CLASS

166, Wells,

60, for electric heaters situated below ground level.

174, Electricity: Conductors and Insulators,

17+, and 50+, for boxes and housings limited by claimed structure to electrical use and not otherwise classifiable; and subclasses 68+ for conduits, cables, and conductors which may be embedded, incased or housed. See also (1) Note above.

219, Electric Heating,

463.1+, for an exposed planar support surface for material to be heated (e.g., hot plate, etc.) formed by a heating unit having a tubular shape, subclass 468.1 for an exposed planar support surface for material to be heated (e.g., hot plate, etc.) where a heating element is embedded in the planar support surface, or subclasses 535+ for a heater unit housing, casing, or support means (e.g., frame and a single sheet, etc.) that is specially formed or adapted to fit material to be heated (e.g., a pipe, etc.).

220, Receptacles,

2.1+, for envelopes for electric lamps or similar devices; and subclasses 3.2+ for outlet or junction box type receptacles. 336, Inductor Devices,

90+, for an inductor device with an outer casing or housing.