Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1976-07-20
1977-06-07
Duzan, James R.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29238, 29239, 29427, B23P 1904
Patent
active
040273733
ABSTRACT:
A method and apparatus for removing a flow control device mounted between two opposed flanges of a pipeline wherein the flanges are clamped together by a plurality of studs. The method comprises the steps of clamping a pair of axially expandable flange spreaders to hold the opposed flanges in axial aligned position. Next, all of the studs are removed or loosened to permit access to the flow control device. Stop means are appended to the flange spreaders at the inside basis of the flanges. Lastly, the flange spreaders are expanded to permit removal of the flow control device from the pipeline. Reversal of the procedure will permit reassembly of the pipeline.
Each of the flange spreaders comprises a pair of interconnected members that are axially expandable or contractable, and initially are clamped in position to hold the opposing flanges in axial alignment. The stop means will be appended to the members to engage the inner face of the opposing flanges whereby on axially expanding the flange spreaders the opposing flanges will be axially forced apart. The flange spreaders may include a jackscrew threadedly connected to a base having a portion abutting the inner face of one of the flanges, and a jackscrew stop adapted to be connected to the jackscrew to abut the inner face of the other flange.
REFERENCES:
patent: 864166 (1907-08-01), Herrick
patent: 1305805 (1919-06-01), Jones
patent: 1831082 (1931-11-01), Spilsbury
patent: 1894835 (1933-01-01), Smith et al.
patent: 2161013 (1939-06-01), Breza
Kwast Theodore Emil
Smith Gordon Marlon
Bell Edward L.
Duzan James R.
Smith Robert E.
The Singer Company
Weinstein Harold
LandOfFree
Flange spreader does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flange spreader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flange spreader will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1228780