(under the class definition) Subject matter wherein means are provided for modifying or controlling the temperature of the oscillator or elements thereof.
(1) Note. For example, included in this subclass are oscillators provided with (1) crystal ovens for controlling or maintaining the oscillator crystal temperature constant, (2) means for forcing a cooling fluid through a cavity resonator of the oscillator, (3) means for circulating a fluid through a hollow conductor comprising the inductor of the LC frequency determining element of the oscillator, (4) an oscillator tube wherein the anode or cathode structure of the tube is provided with passages through which a cooling fluid is passed or wherein the external terminal of the anode electrode may include cooling fins.
SEE OR SEARCH THIS CLASS, SUBCLASS:
66, for oscillators combined with an external temperature responsive means for controlling a characteristic (e.g., frequency or amplitude) of the oscillator.
69, for oscillators including temperature modifying means, combined with an outer casing or housing.
176, for oscillators in general including temperature or current responsive means in the oscillator circuit for stabilizing the oscillator frequency.
SEE OR SEARCH CLASS 174, Electricity: Conductors and Insulators,
15.1+, for means for cooling electrical apparatus wherein no details of the apparatus are claimed. See the search notes to subclass 15.1 and the class definition search notes of Class 174 for other fields of search with respect to modifying the temperature of particular electrical apparatus.
