(under subclass 272) Elements wherein provision is made to prevent freezing of the meter; or for expansion or yielding or for the fracture of some particular part to prevent injury to other portions of the meter in the event of freezing of the metered fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
201, for anti-freeze constructions of meter boxes of enclosing the meter.
SEE OR SEARCH CLASS
138, Pipes and Tubular Conduits,
26-, 35 for other types of frost constructions capable of
general application and not tied up with meter structure. 220, Receptacles,
89.1+, and 265+ for frangible closures and attachments of general application in metallic receptacles.
285, Pipe Joints or Couplings,
1, for fracturable or yieldable flanged joints between two parts of a meter casing wherein said parts are no more in effect than two pipe members.
