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1. (WO1988003200) APPAREIL DE NETTOYAGE POUR EXCAVATEURS
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS

1. A cleansing apparatus for excavators of the type comprising a pivoted arm or stick (2) and a bucket (1) carried by. said arm via a transverse hinge pin (19), c h a r a c t e r i z e d in that at least one support arm (8, 20) is hingedly connected to the stick (2) or the bucket (1) and carries a substantially cylindrical brush (7) which is rotatable about a shaft (14) substantially parallel to the hinge pin (19) of the bucket and which, by pivotment of the support arm, is movable be- tween a lowered position in which it is rotated for sweeping away a layer of material remaining after the removal of filling material over a buried conduit (5) in order to expose the conduit, and a raised position in which the brush abuts against the stick. *
* 2. Apparatus as claimed in claim 1, c h a r a c t e r i z e d in that the support arm (20) is hingedly connected to the bucket ( 1 ) with its hinge pin coaxial with the hinge pin (19) about which the bucket is pivotal relative to the stick (2).
3. Apparatus as claimed in claim 1, c h a r a c t e r i z e d in that the support arm (8), in addition to being pivotal, is telescopically extensible.
4. Apparatus as claimed in any one of the preceding claims, c h a r a c t e r i z e d in that the brush (7) is rotatable by means of a hydraulic motor (17) mounted on the support arm (8)' and/or within an associated drive shaft (14).
5. Apparatus as claimed in any one of the preceding claims, c h a r a c t e r i z e d in that the rotary brush (7) is arranged to cooperate with a cover (18) serving to guide material which is swept by the brush in a direction away from the bucket, back into the bucket along a trajectory around and above the brush.