(19)
(11) EP 0 916 424 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.01.2002 Bulletin 2002/04

(43) Date of publication A2:
19.05.1999 Bulletin 1999/20

(21) Application number: 98120940.6

(22) Date of filing: 04.11.1998
(51) International Patent Classification (IPC)7: B21D 1/06
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 13.11.1997 JP 32958797
29.10.1998 JP 30848298

(71) Applicants:
  • Kabushiki Kaisha Tokyo Engineering
    Kodama-gun, Saitama Pref. (JP)
  • Kabushiki Kaisha Sangoro
    Kodama-gun, Saitama Pref. (JP)

(72) Inventors:
  • Sunaga, Hideo c/o K.K. Tokyo Engineering
    Kodama-gun, Saitama Pref. (JP)
  • Fukushima, Yoshitake c/o K. K. SANGORO
    Kodama-gun, Saitama Pref. (JP)

(74) Representative: Beier, Ralph, Dipl.-Ing. 
Patentanwälte Staeger & Sperling Müllerstrasse 3
80469 München
80469 München (DE)

   


(54) Sheet metal repairing method and sheet metal working tool


(57) A dent portion in a sheet metal such as a car body is repaired by locating a bar above the dent portion, permitting a prescribed number of steel rods each having an engaging portion to be engaged to or inserted through the bar, welding one leading end of each of the steel rods to the dent portion in the sheet metal, and drawing the bar by using a drive means separately installed to pull up the steel rods together with the dent portion in the sheet metal, thereby to make the dent portion flat. The dent portion may be pulled out by locating a bar above the dent portion in the sheet metal, inserting a prescribed number of bolts through the bar, welding one leading end of each of the bolts to the dent portion in the sheet metal, screwing nuts to the bolts, and rotating the nuts to draw up the bolts. Thus, the dent portion can easily and appropriately be pulled out with a small rotating force.






Search report