(19)
(11) EP 0 074 234 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.10.1983 Bulletin 1983/43

(43) Date of publication A2:
16.03.1983 Bulletin 1983/11

(21) Application number: 82304559

(22) Date of filing: 31.08.1982
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI NL SE

(30) Priority: 02.09.1981 GB 8126604

(71) Applicants:
  • John Macdonald & Company (Pneumatic Tools) Limited
     ()
  • Allan, David Thomson
     ()

(72) Inventor:
  • Allan, David Thomson
     ()

   


(54) Improvements in scabbling apparatus


(57) O There is described apparatus for scabbling concrete in which the cylinder block which has a plurality of scabbling bit-carrying pistons mounted for reciprocal movement within a frame such that it is free to move within the frame in the direction of reciprocation of the piston.






Search report