(under subclass 18) Subject matter wherein the electromagnetic operator which furnishes the drive for the variable tuning unit is a solenoid and/or relay device.
(1) Note. The solenoid may periodically act to load an energy storage device such as, for example, a spring with the energy storage device then acting to drive the variable tuning element. In these cases, the solenoid is considered to have furnished the drive for the variable tuner and the subject matter is properly classifiable in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
10+, for tuners which are remotely controlled and use a solenoid as a driver means.
SEE OR SEARCH CLASS
310, Electrical Generator or Motor Structure, 14, 23+, 30, and 34+ for solenoid motor structure, per se.
335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,
220+, for magneto-mechanical motive devices.
361, Electricity: Electrical Systems and Devices,
139+, for electric circuits for relays and electromagnets.
455, Telecommunications,
170.1+, for receivers with frequency selective means (i.e., tuners) with solenoid or relay means.
