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1. (IN139/DELNP/2008) APPARATUS AND METHOD FOR SEPARATING FLANGES

Office : India
Application Number: 139/DELNP/2008 Application Date: 04.01.2008
Publication Number: 139/DELNP/2008 Publication Date: 01.08.2008
Grant Number: 290041 Grant Date: 01.12.2017
Publication Kind : B
Prior PCT appl.: Application Number:PCTGB2006002473 ; Publication Number:PCTGB2006002473 Click to see the data
IPC:
F16L 23/00
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
L
PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
23
Flanged joints
Applicants: EQUALIZER INTERNATIONAL LIMITED.
Inventors: STEPHEN ROBERT
Priority Data:
Title: (EN) APPARATUS AND METHOD FOR SEPARATING FLANGES
Abstract:
(EN) The present invention provides a method and apparatus for separating or spreading flanges (70) of pipes typically comprising two bolt hole engaging devices (20) and a force transmission system. The force transmission system is arranged for selective coupling with the or each bolt hole engaging device (20) and capable of exerting a force thereon for selective movement of the flanges (70) relative to one another in order to separate the pipes. The bolt hole engaging device (20) comprises an expandable member (40) that is arranged to be at least partially accommodated within the bolt hole before expansion. The bolt hole engaging device (20) also comprises an expander means (38, 54), arranged to expand the expandable member (40) such that at least a portion of an outer surface of the expandable member (40) is expanded to contact the bolt hole. The expander means (38, 54) can comprise at least one wedge shaped member and an actuator means for causing relative movement between the wedge shaped member and the expandable member (40) to cause the expandable member (40) to expand. The expansion of an expandable member (40) within a bolt hole maintains a large surface area of the bolt hole engaging device (20) in contact with the bolt hole and thereby increases the friction between the device (20) and the flanges (70) to be spread, resulting in a more reliable apparatus.
Also published as:
NO20080576MXMX/a/2008/000135EP1907741US20090087248CN101213396EA200800214
WO/2007/003937