Abstract: The present invention relates to a surface modified overhead conductor with a coating that allows the conductor to operate at lower temperatures. The coating is an inorganic, non-white coating having durable heat and wet aging characteristics. The coating preferably contains a heat radiating agent with desirable properties, and an appropriate binder/suspension agent. In a preferred embodiment, the coating has L* value of less than 80, a heat emissivity of greater than or equal to 0.5, and/or a solar absorptivity coefficient of greater than 0.3.

Abstract: A heat wire type airflow meter having a resistance element disposed within an airflow, the rate of which is measured, and a detection circuit for producing an airflow rate signal by detecting resistance change of the element depending on the airflow rate, in which the resistance element comprises a heat wire coil, lead wires attached to the heat wire coil at both ends thereof, a ceramic layer covering the heat wire coil and junctions of the heat wire coil and the lead wires to form a cylindrical member in such a manner that the heat wire coil is contained therein coaxially and along an inner surface thereof and a glass layer for coating an outer surface of the cylindrical member.

Abstract: Wire-wound resistor covered with a layer of enamel on the basis of a zinc borosilicate having a composition:______________________________________ SiO.sub.2 6-18 CaO 5-12 B.sub.2 O.sub.3 35-60 Al.sub.2 O.sub.3 5-15 Na.sub.2 O 2-12 ZrO.sub.2 5-10 ZnO 10-25 CoO 0,1-2 ______________________________________wherein Al.sub.2 O.sub.3 +ZrO.sub.2 exceeds twice the Na.sub.2 O-content and some maxima for permissible contents of other oxides, including coloring oxides, are indicated.This enamel provides a proper solution of the problem of composing an enamel being adequately alkali-proof and being located in the proper range of coefficients of expansion for Ni-Cr and Ni-Cu-wire.

Abstract: An automatic electric cigar lighter, particularly a cigar lighter igniting unit for automobiles and the like. The cigar lighter comprises a holder device presenting an outwardly facing socket, and a unique ignitor plug receivable in the socket. Disposed at the inner end of the plug is a heating element which is electrically connected in circuit with a heat-responsive switch that is also carried by the plug. The socket in addition to its grounding circuit has a "hot" contact which is engageable with a cooperable contact on the plug to effect the circuit through the heating element. The plug comprises a manually operable part by which the heat-responsive switch can be closed, thereby to complete the heating circuit through the element. A bimetallic member is also carried by the plug, engageable with one of the switch parts and normally lying in a circuit-opening position wherein it maintains the switch parts separated and from which it can be shifted to a closed-circuit position.