(under subclass 226) Subject matter wherein the casing or housing is formed as a single thin elongated member, such as a tube, one end being closed over the resistance element, with flexible leads externally connected or joined to terminals or with leads extending into the other end of the member for connection to the resistance element, together with structure or configuration, such as a handle or a particular shape of the member, which permits or facilitates free movement of the elongated member with the resistance element therein.
(1) Note. Most of the patens in this subclass are subcombinations of instruments adapted to perform particular functions such as thermometers, immersion heaters, and soldering irons, no significant structure being claimed relating to the performance of these functions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
28+, for probe type resistors whose resistance value is responsive to ambient temperature. See also (1) Note above.
228, for probe type resistors extending through and secured to a wall or plate.
315+, for resistors with supporting handles. SEE OR SEARCH CLASS
219, Electric Heating,
538+, for electric heaters formed as probes, especially subclasses 850+ for soldering irons; and subclass 437 for immersion fluid heaters. See also (1) Note above.
324, Electricity: Measuring and Testing,
149, for electrical testing or measuring devices with probes or prods.
