(19)
(11) EP 0 280 195 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.03.1990 Bulletin 1990/13

(43) Date of publication A2:
31.08.1988 Bulletin 1988/35

(21) Application number: 88102374.1

(22) Date of filing: 18.02.1988
(51) International Patent Classification (IPC)4: B25D 17/08, B25D 17/24
(84) Designated Contracting States:
BE CH DE FR GB IT LI NL SE

(30) Priority: 21.02.1987 JP 38397/87
29.06.1987 JP 162036/87

(71) Applicant: YAMADA JUKI CO., LTD.
Nishi-ku Kobe (JP)

(72) Inventor:
  • Miyagawa, Shigeru
    Nishi-ku Kobe (JP)

(74) Representative: Reinhard - Skuhra - Weise & Partner 
Postfach 44 01 51
80750 München
80750 München (DE)


(56) References cited: : 
   
       


    (54) Percussion apparatus with tool holder


    (57) A percussion apparatus comprises a vertically extending tubular housing (2), an end cap (28) removably mounted to the lower end of the housing, and a tool holder (34) extending through the end cap as elastically supported thereby and slidably movable axially of the housing. A chisel (18) extends through the holder and has a head located within the housing to be hit by a hammer rod (13) axially reciprocated in the housing. A tool holding device (37) is mounted on the holder outside the end cap for selecting a first condition in which the chisel is prevented from falling off the holder while being allowed to move axially within a limited range, and a second condition in which the chisel is allowed to be completely removed from the holder.







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