(19)
(11) EP 0 129 358 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.10.1985 Bulletin 1985/43

(43) Date of publication A2:
27.12.1984 Bulletin 1984/52

(21) Application number: 84303719

(22) Date of filing: 04.06.1984
(84) Designated Contracting States:
BE DE FR GB IT NL SE

(30) Priority: 15.06.1983 GB 8316254

(71) Applicant: BL TECHNOLOGY LIMITED
 ()

(72) Inventors:
  • King, Charles Spencer
     ()
  • Campbell, Ian Gordon
     ()

   


(54) Rivetting apparatus and method


(57) @ A portable or fixed rivetting system incorporates a base 11, a punch 14 and a flat anvil 12 having a substantial inertia and movable on base 11. A hollow rivet 17 is driven by punch 14 through sheet 15 and into sheet 16. A piercing edge 22 of the rivet cuts through sheet 15 and penetrates substantially into sheet 16. When the anvil 12 retracts t,o base 11 and increased rivetting force causes protuding portion 23 to flow outward, expanding the end of the rivet and thus setting it.






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