Mandrel for vertical-type pipe expanding apparatus

Details Mandrel for vertical-type pipe expanding apparatus Mandrel for vertical-type pipe expanding apparatus

1990-11-21

1992-03-24

Cuda, Irene

Metal working

Means to assemble or disassemble

Heat exchanger

29890044, 72478, B23P 1526

Patent

active

050975900

ABSTRACT:
A mandrel for use in a vertical-type pipe expanding apparatus comprising a reciprocating member provided above pipes to be expanded and vertically movable by extending and contracting means; an attachment plate provided adjacent to the underside of the reciprocating member, having a predetermined space gap formed on the upper side, and also having a plurality of penetration holes bores through the attachment plate to hold a plurality of pipe expanding mandrels in such a manner as to prevent the mandrels from slipping off in the direction toward their tip ends, when the mandrels are inserted into the penetration holes to extend vertically downwardly therethrough, the proximal ends of the mandrels being capable of projecting through the reciprocating member from below to above; and a pressing attachment removably installed into the space gap and having pressing surfaces formed to make the proximal ends of the mandrels actuatable in match with positions of the pipes to be expanded. The proximal ends of the mandrels vertically downwardly extending through the respective penetration holes of the attachment plate are provided with engagement steps having the larger diameter than shafts of the mandrels to prevent a drop of the mandrels. The pipes are expanded in any desired array pattern just by replacing the pressing attachment.

REFERENCES:
patent: 4106322 (1978-08-01), Moshnin et al.
patent: 4584765 (1986-04-01), Gray
patent: 4771536 (1988-09-01), Uanderlaan et al.
patent: 4930338 (1990-05-01), Tokura
patent: 4980966 (1991-01-01), Milliman et al.
patent: 5003691 (1991-04-01), Milliman et al.

Affiliated with

Also associated with

Rating

Mandrel for vertical-type pipe expanding apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mandrel for vertical-type pipe expanding apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mandrel for vertical-type pipe expanding apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2000947