(19)
(11) EP 0 353 359 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.04.1990 Bulletin 1990/17

(43) Date of publication A2:
07.02.1990 Bulletin 1990/06

(21) Application number: 88307221.7

(22) Date of filing: 04.08.1988
(51) International Patent Classification (IPC)5: B27B 33/14
(84) Designated Contracting States:
CH DE FR GB LI SE

(71) Applicant: BLOUNT, INC.
Portland Oregon 97201 (US)

(72) Inventor:
  • Wold, John K.
    West Linn Oregon (US)

(74) Representative: Jones, Ian et al
W.P. THOMPSON & CO. Celcon House 289-293 High Holborn
London WC1V 7HU
London WC1V 7HU (GB)


(56) References cited: : 
   
       


    (54) Centre link for a saw chain


    (57) An articulated saw chain having pivotally interconnected centre drive links (10) and side links (14,16), the side links having bottom edges that incur splaying as a result of the side links pounding the guide bar rail edges (20) during cutting action. An inset portion (30) is provided on the centre links (10) in the area of overlap defined by the bottom edges on being pivoted relative to the centre links. The inset portions (30) provide added clearance to permit substantial splaying of the bar engaging bottom edge surface (28) of the side links without interference and binding.







    Search report