(19)
(11) EP 0 160 287 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.01.1987 Bulletin 1987/03

(43) Date of publication A2:
06.11.1985 Bulletin 1985/45

(21) Application number: 85105161

(22) Date of filing: 26.04.1985
(84) Designated Contracting States:
DE FR GB SE

(30) Priority: 03.05.1984 IT 5333184

(71) Applicant: RIV-SKF OFFICINE DI VILLAR PEROSA S.p.A
 ()

(72) Inventor:
  • Colanzi, Franco
     ()

   


(54) Perfected hydraulic tappet with automatic slack take-up for internal combustion engines


(57) @ Tappet (1) having a pressure chamber (8) supplied by a pipe (10) having a cut-off valve (11) with a ball (12) floating in a respective truncated-cone seat (13), the said chamber (8) being defined by the upper part (23) of an outer coupling (16) forming part of a cup member (2) cooperating with a cam (9), by a lower annular wall (19) connecting the said outer coupling (16) to a corresponding integral inner coupling (18), by a plate (14) laser-welded for closing off the said upper part of the said outer coupling (16) and the said chamber (8), and by a piston (5) housed in sliding manner inside the said inner coupling (18).






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