Electric heating – Metal heating – Cutting or disintegrating
Patent
1983-04-29
1986-01-21
Albritton, C. L.
Electric heating
Metal heating
Cutting or disintegrating
219 69R, 219 69E, 219 70, B23P 106
Patent
active
045659141
ABSTRACT:
A method and apparatus for demounting a metal plate spot welded to a metal member. In accordance with the method, a hollow electrode rod is placed in opposition to the periphery of a spot weld between the metal plate and the metal member, an electric arc is formed between the electrode rod and the metal plate, the periphery of the spot weld is melted with arc heat, and the resultant molten metal is drawn up through the hollow portion of the electrode rod. The method may be performed with an apparatus having a hollow internal rod which includes an electrode rod retaining portion at a forward tip end thereof. A rod retaining mechanism retains the internal rod for free longitudinal movement in opposite forward and rearward directions, elastically urged in the forward direction. A sliding block is movable in the forward and rearward directions, urged forward by an elastic member. Structure is provided to prevent movement of the sliding block forward of a predetermined forward position. A device is provided for engaging the sliding block with the internal rod and moving the sliding block and internal rod in a rearward direction to a predetermined rearward position. Also provided is a device for releasing engagement between the sliding block and the internal rod, a guide piece mounted on the retaining mechanism for establishing a reference position from which the free end of the electrode rod is movable a predetermined distance rearward of a metal member to be treated, and structure for drawing melted metal rearward through the hollow electrode rod and internal rod.
REFERENCES:
patent: 802707 (1905-10-01), Peters
patent: 2427588 (1947-09-01), Burnett
patent: 2510960 (1950-06-01), Danhier
patent: 2715172 (1955-08-01), Larkins, Jr.
patent: 2718581 (1955-09-01), Thomas
patent: 2751482 (1956-06-01), Stepath
patent: 2818490 (1957-12-01), Dixon et al.
patent: 3200231 (1965-08-01), Bejat
patent: 3306838 (1967-02-01), Johnson
patent: 3427423 (1969-02-01), O'Connor
patent: 3475312 (1969-10-01), Inoue
patent: 3524038 (1970-08-01), O'Kelly, Jr.
patent: 3561662 (1971-02-01), Duhaime et al.
patent: 3622735 (1971-11-01), Mainwaring
patent: 4023005 (1977-05-01), Bolin
Inaoka Koji
Maeda Masanori
Miura Tetsuro
Suzaki Hidenori
Albritton C. L.
Evans Geoffrey S.
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Method and apparatus for demounting a spot welded metal plate 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 and apparatus for demounting a spot welded metal plate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for demounting a spot welded metal plate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2299597