Pipe thread protector device

Details Pipe thread protector device Pipe thread protector device

1981-07-27

1983-11-15

Shepperd, John W.

Pipes and tubular conduits

End protectors

Threaded

138 89, F16L 5700

Patent

active

044150059

ABSTRACT:
A device for protecting threads on a pipe which includes an annular elastomeric sleeve dimensioned to fit around the outside of the pipe in a thread protective position, a plate extending transversely across one end of the elastomeric sleeve and acting as a stop limiting axial movement of the sleeve on the pipe, and a radially expansible internal gripping subassembly for selectably gripping the inside surface of the pipe to retain the thread protector device in operative position. The radially expansible, internal gripping subassembly includes, as a part thereof, a camming handle which is used to actuate an axially projecting shaft by cam action and to thus place the subassembly in compression, thereby causing an elastomeric material forming a part thereof to expand radially onwardly and frictionally engage the interior of the pipe.

REFERENCES:
patent: 2315538 (1943-04-01), Moeller
patent: 2547992 (1951-04-01), Baker
patent: 2937666 (1960-05-01), Maisch
patent: 2993616 (1961-07-01), Carlile et al.
patent: 3038502 (1962-06-01), Hauk et al.
patent: 3749131 (1973-07-01), Burger
patent: 3860037 (1975-01-01), Rowe
patent: 3964754 (1976-06-01), Murai et al.
patent: 4266578 (1981-05-01), Swain et al.

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