Device for preparing pipe ends for jointing

Details Device for preparing pipe ends for jointing Device for preparing pipe ends for jointing

2007-05-01

2011-11-15

Crispino, Richard (Department: 1747)

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Rod or tubular preform

C425S393000, C425S466000, C425S468000, C072S392000

Reexamination Certificate

active

08057215

ABSTRACT:
A device for the preparation of pipe ends, prior to jointing them together using an inserted close-fitting spool and an external close-fitting sleeve, consists of a plain cylindrical mandrel (10) adapted to be firmly fixed centrally inboard of an end zone of the bore of a pipe (12) so as to project from the end of the pipe, a hydraulic cylinder (46) adapted to be removeably mounted co-axially on the projecting end of the mandrel, and a piston (48) in the cylinder slideable along the mandrel and adapted to carry an interchangeable annular tool, whereby the tool can be force fed axially along the mandrel into the pipe to modify the bore thereof.

REFERENCES:
patent: 2266795 (1941-12-01), Parker
patent: 3170236 (1965-02-01), Massingill
patent: 3412592 (1968-11-01), Ramsay
patent: 3857666 (1974-12-01), Barnett
patent: 4545951 (1985-10-01), Gordon
patent: 5582842 (1996-12-01), Wise et al.
patent: 5785906 (1998-07-01), Prenger et al.
patent: 5863569 (1999-01-01), Leopoldo et al.
patent: 338347 (1927-01-01), None
patent: 0 284 773 (1988-10-01), None
patent: 2356598 (2001-05-01), None
patent: 02130127 (1990-05-01), None

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