(under subclass 189) Subject matter including a clamp comprising a saddle shaped member transverse and astride one pipe with means to force a pipe end to a pipe side.
SEE OR SEARCH THIS CLASS, SUBCLASS:
180, for an elbow coupling including a saddle clamp.
309+, for a coupling comprising an essential catch having a manipulator with means to increase the contact pressure.
SEE OR SEARCH CLASS
251, Valves and Valve Actuation,
146+, for similar means for mounting a valve to a pipe side.