Pipe expanding apparatus

Details Pipe expanding apparatus Pipe expanding apparatus

1990-11-20

1992-03-31

Jones, David

Metal deforming

With tool carrier

With guide for rectilinearly moving tool

72373, 7245306, 29727, 29890044, B21D 3712

Patent

active

050996770

ABSTRACT:
A pipe expanding apparatus comprising a reciprocating member to which a plurality of pipe expanding mandrels are attached to be capable of being inserted into a plurality of pipes to be expanded under pressure, a plurality of guide posts penetrating through the reciprocating member at desired locations for slidably guiding the reciprocating member, and extending and contacting apparatus which is mounted on a frame uprightly provided on a base, and is operated to reciprocate the reciprocating member for expanding the pipes. The extending and contracting apparatus is constituted by at least one pair of cylinders disposed at both lateral side ends of the reciprocating member, respectively, for inserting the mandrels attached to the reciprocating member into the pipes to be expanded under pressure when actuated.

REFERENCES:
patent: 3824668 (1974-07-01), Wightman
patent: 4597171 (1986-07-01), Kitayama et al.
patent: 4766667 (1988-08-01), Gray
patent: 4980966 (1991-01-01), Milliman et al.

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