Pipe joints or couplings – Frangible element
Patent
1989-03-13
1990-07-10
Arola, Dave W.
Pipe joints or couplings
Frangible element
285337, 285404, F16L 3500
Patent
active
049402595
ABSTRACT:
Pipe joint connections with set screws that have swivel-mounted feet. Such set screws when used with such connections flexibly and tenaciously retain pipe sections in the connections in the same manner that a toy "chinese puzzle" woven straw tube retains a person's fingers. The larger faces of such set screw feet allow the set screws to grip the pipe section with considerably less torque than that required by conventional set screws. Such connections form a flexible, strong coupling that maintains its holding power despite changes in pipe position and environmental factors such as temperature and pressure. Such connections are particularly well suited for joining polyvinyl chloride pipe sections to mechanical joint pipe fittings, valves and hydrants, although they are also extremely effective in joining conventional mechanical joint metal pipe sections to such attachments.
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FIG. 11.1 and Notes on p. 7 entitled "Rubber Gasket Joints".
Page No. "MJ-2" having at left top margin: U.S. Pipe Steps in Assembly of Mechanical Joint Pipe.
Page No. "MJ-3" having at left top margin: U.S. Pipe Standardized Mechanical Joint for Ductile Iron Pipe.
Arola Dave W.
Standard International, Inc.
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