(under subclass 901) Subject matter including structure which provides adjustment of the telescoping position of the antenna sections in response to change in the pressure of a fluid.
(1) Note. For classification in this subclass there must be some claimed electrical limitation as opposed to a mere recitation of a fluid motor or expansible chamber device structure. The mere recitation that the device or a mounting therefor is formed of insulating or conducting material, if the claim is otherwise directed to a fluid motor or an expansible chamber device, will not preclude classification in a fluid motor or expansible chamber device class.
SEE OR SEARCH CLASS
60, Power Plants,
325+, for a fluid pressure means which may be used for extending or retracting antennas.
91, Motors: Expansible Chamber Type, appropriate subclasses for expansible chamber motors, per se. 92, Expansible Chamber Devices, appropriate subclasses for an expansible chamber device in which the piston or cylinder is disclosed as an antenna.
123, Internal-Combustion Engines, appropriate subclasses for fluid pressure means of the internal combustion (or explosive) type confined to a cylinder.
