Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Patent
1994-02-28
1995-11-14
Cuda, Irene
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
2940203, 294266, 138 89, B23P 1526
Patent
active
054654831
ABSTRACT:
A method of removing a metal plug from a conduit includes the steps of simultaneously applying a static pull force and repetitive impulses to the plug. The method is particularly suited to removing a plug from a heat exchanger tube in a nuclear powered steam generator. A tool for practicing the method on such plugs includes a first hydraulic actuator for first moving an expansion member out of engagement with an interior plug wall, a second hydraulic actuator capable of attachment to the plug for applying a static pull force to the plug, and an arrangement connecting an air impact tool to the second hydraulic actuator for applying, simultaneously with the static force, high-frequency impulses to the plug entirely through solid members.
REFERENCES:
patent: 3120700 (1964-02-01), Chuplis, Jr.
patent: 3613212 (1971-10-01), Miller
patent: 3791011 (1974-02-01), Keys
patent: 4366617 (1983-01-01), Nanstiel et al.
patent: 4390042 (1983-06-01), Kucherer
patent: 4436117 (1984-03-01), Martin
patent: 4571802 (1986-02-01), Calhoun et al.
patent: 4734972 (1988-04-01), Hawkins
patent: 4751944 (1988-06-01), Sinha et al.
patent: 4776072 (1988-10-01), Jacquier
patent: 4787420 (1988-11-01), Wilhelm
patent: 4793056 (1988-12-01), Kurokawa et al.
patent: 4800637 (1989-01-01), Overbay
patent: 4829660 (1989-05-01), Everett et al.
patent: 4903392 (1990-02-01), Stickel et al.
patent: 5117548 (1992-06-01), Griffith et al.
patent: 5255717 (1993-10-01), Nelson et al.
Boone Paul J.
Costlow Annette M.
Everett James W.
Fink David J.
Roberts James J.
Butler Marc
Cuda Irene
Westinghouse Electric Corporation
LandOfFree
Method for removing a metallic plug from a tube does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for removing a metallic plug from a tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for removing a metallic plug from a tube will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1213188