.~ With protection or indication of pipe or trench
DEFINITION
Classification: 405/157
With protection or indication of pipe or trench:
(under subclass 154) Method or apparatus wherein a ditch is formed into which the conduit or string is to be laid, and wherein means is provided to guard against damage or injury either to the conduit or string or to people who may be in the ditch, or wherein means is provided to show where the conduit or string is subsequently buried under the surface of the earth.
(1) Note. The protection means prevents the trench wall from caving in or protects the pipe from being damaged after it is covered by earth. The indicator means may be positioned permanently or temporarily.
SEE OR SEARCH THIS CLASS, SUBCLASS:
282+, for trench shoring, per se.
SEE OR SEARCH CLASS
138, Pipes and Tubular Conduits,
104, for conduit combined with indicator means; and subclass 105 for conduit combined with a trench feature.
