(under subclass 137) Insulators in which the shape or external configuration of the insulating body is specially designed to modify its electrical and/or mechanical characteristics. This includes, for example, insulators (1) having petticoats, skirts, or flanges formed or proportioned to distribute electrical stresses or increase the leakage path or (2) having strengthening ribs formed thereon, or (3) shaped to afford tool engaging surfaces to facilitate mounting the insulator, or (4) streamlined to reduce wind resistance.
(1) Note. For insulators having a shape or surface designed to disperse or to facilitate shedding or removal of rain, moisture, or other foreign matter, see this class, subclass 211.
(2) Note. For insulators having a shape or surface modified to provide conductor receiving or attaching means, see this class, subclass 168 and indented subclasses, especially
subclasses 174 and 175.
(3) Note. For insulators having a shape or surface modified to provide terminal receiving or attaching means, see this class, subclass 176 and indented subclasses.
(4) Note. For insulators having interlinking passages or grooves formed therein, see this class, subclass 208.
(5) Note. For insulators having a shape or surface modified to provide support receiving or attaching means, see this class, subclass 158 and indented subclasses.
