(19)
(11) EP 0 940 202 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.08.2000 Bulletin 2000/33

(43) Date of publication A2:
08.09.1999 Bulletin 1999/36

(21) Application number: 98670001.1

(22) Date of filing: 03.04.1998
(51) International Patent Classification (IPC)7: B21J 15/02
(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: 05.03.1998 PT 944998 U

(71) Applicant: Portuleiter - Produtos Metalicos, Limitada
2120 Foros de Salvaterra (PT)

(72) Inventor:
  • Nunes, José Maria Martins
    2125 Marinhais (PT)

(74) Representative: Sousa da Silva Lourenço, Ludgero 
A TECNAL-Gabinete de Registos Limitada, Avenida Antonio Augusto de Aguiar, 80 r/c Esq.
1050 Lisboa
1050 Lisboa (PT)

   


(54) Process for mechanical riveting


(57) This utility model refers to a process for mechanical riveting whose evident object consists in allowing the definitive mechanical connection and fixing of parts and pieces, for instance hinges for hinged ladders, in a form that dismisses the means hitherto known and used in the art.
The fixing by this mechanical riveting process of, for instance, hinge (1) for hinged ladders consists in specially reamed recesses or drillings (3) made out in the inner parts (2) in a number depending from the applications and respective loads at stake, and in mechanical deformations or protrusions (5) made out by pressures exerted from outside upon the ends (4) of the outer parts of the connection to be established, in order to provoke the penetration of said deformations or protrusions (5) into said reamings (3).






Search report