(19)
(11) EP 0 499 459 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.04.1993 Bulletin 1993/14

(43) Date of publication A2:
19.08.1992 Bulletin 1992/34

(21) Application number: 92301164.7

(22) Date of filing: 12.02.1992
(51) International Patent Classification (IPC)5: B25D 17/00, B25D 11/10
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI NL PT SE

(30) Priority: 13.02.1991 GB 9103048
20.09.1991 GB 9120076

(71) Applicants:
  • Manning, John Patrick
    Teesside Airport, County Durham (GB)
  • Palmer, Robert Maurice
    Darlington, County Durham (GB)

(72) Inventor:
  • Manning, John Patrick
    Teesside Airport, County Durham (GB)

(74) Representative: Virr, Dennis Austin 
Urquhart-Dykes & Lord St. Nicholas Chambers Amen Corner
Newcastle-Upon-Tyne NE1 1PE
Newcastle-Upon-Tyne NE1 1PE (GB)


(56) References cited: : 
   
       


    (54) Powered tool


    (57) A tool in which the operating head is given an improved, controlled linear reciprocatory action includes a cam member (13; 44) and a cam follower (32; 40) mounted within a housing (10). Either the cam member or the cam follower is rotated by a drive means (12) and either the cam follower or the cam member is mounted for linear reciprocatory movement. The cam follower includes a rotary bearing (33; 41, 42) and a spring means (30) is provided to urge the cam member and cam follower out of interengagement. The tool operating head, for example a chisel bit, is given a pulsed and/or reciprocatory action under the ready control of the user.






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