US PATENT SUBCLASS 174 / 137 R
INSULATORS

Current as of: June, 1999
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174 /   HD   ELECTRICITY: CONDUCTORS AND INSULATORS

137 RINSULATORS {17}
138 R  DF  .~> Special application {10}
139  DF  .~> Combined {2}
146  DF  .~> Mid-line spacers {1}
148  DF  .~> Multiple insulator assemblies {2}
151  DF  .~> Through wall or plate {1}
154  DF  .~> Insulator and conductor embracing holder {1}
156  DF  .~> Divided insulator {1}
158 R  DF  .~> With insulator-supporting or attaching means {7}
167  DF  .~> With conductor receiving aperture or bushing type
168  DF  .~> With conductor holding means {3}
176  DF  .~> With terminal elements {5}
208  DF  .~> Link type
209  DF  .~> Sectional, multi-part, composite, or coated {1}
211  DF  .~> With moisture or dirt removing or shedding
212  DF  .~> Surface configuration
137 A  DF  .~> Coated
137 B  DF  .~> Compositions

Unofficial Alpha Subclasses: R A B

DEFINITION

Classification: 174/137

(under the class definition) Devices for electrically insulating one or more conductors or other articles or structures from one another or from a supporting structure or ground.

(1) Note. An insulating device within the meaning of this class may include in addition to the insulating body, per se, the necessary attachments or fittings for mounting or supporting the insulator or for securing a conductor or other article thereto.

(2) Note. See this class, subclass 8 and indented subclasses, particularly subclasses 30 and 31, for insulating devices utilizing fluids; subclass 40 and indented subclasses, for overhead installations, and subclass 68.1 and indented subclasses, particularly subclass 110 and indented subclasses, for insulated conductors.

(3) Note. Insulating devices limited by structure to use with particular art devices or claimed in combination with significant structure thereof will be found in the appropriate art classes. See Search Class below for those classes particularly noted.

(4) Note. For dielectric materials see Notes (1), (1.5), (2), and (3), (3.1) and (3.5) of the class definition of this class, and the classes listed therein, and also Class 156 Adhesive Bonding and Miscellaneous Chemical Manufacture, appropriate subclasses for laminated insulation fabrics and Class 162, Paper Making and Fiber Liberation, for paper.

(5) Note. For conductor or cable supports not claimed of insulating material, or otherwise restricted by electrical limitations, such as arcing devices, grounding means, etc., see Class 248, Supports, subclass 49 and indented subclasses. SEE OR SEARCH CLASS

16, Miscellaneous Hardware,

18+, for insulating casters, and subclasses 431+, for insulated handles.

52, Static Structures (e.g., Buildings),

408+, for a disparate sheet lamina between components of an in-situ construction and having no defined electrical significance except insulation in general.

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures,

228+, for a composition having a continuous phase of free metal made by consolidating metal particles.

105, Railway Rolling Stock,

60, for electric locomotive insulation.

238, Railways: Surface Track,

107, and 108, for railway tie insulation, and subclass 152 and indented subclasses, for insulated rail joints. 248, Supports,

345, for canopy insulators.

285, Pipe Joints or Couplings,

47+, for insulated pipe joints and couplings; and also the classes listed in note (4) of subclass 123.14 of this class.