(under subclass 137) Devices for insulating a conductor from a wall or plate through which the conductor extends.
(1) Note. For such devices combined with or utilizing a
fluid, see this class, subclass 31.
(1.3) Note. For hermetically sealed envelopes of the type used for electric lamps and electric space discharge devices which have a metallic wall portion with a lead-in conductor which passes through and is insulated from the metal wall portion, and where structure of the envelope in addition to the bushing structure is recited, see subclass 50.56 of this class.
(1.5) Note. For the miscellaneous boxes and housings with bushings where structure in addition to the bushing structure is involved, and for the miscellaneous boxes and housings with means to couple a cable, wire or conduit to the box or housing, see subclass 65 of this class.
(2) Note. For such devices combined with conductive arcing or stress distributing means, see this class, subclasses 142 and 143.
(3) Note. For mere tubular or spool-type insulators not limited to use with a wall or plate, or combined in combination therewith, see this class, subclass 167 and the notes thereto. SEE OR SEARCH CLASS
343, Communications: Radio Wave Antennas, particularly
713+, for antennas with a vehicle wherein the antenna or its lead-in conductor is supported by, and may extend through and be insulated from, the vehicle body; and subclasses 888+ for antennas with a support for supporting the rod-like end portion of the antenna which may extend through and be insulated from a wall or plate.
