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1. WO1990004502 - DISPOSITIF DE NETTOYAGE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]
CLAIMS

1. Blade-protecting device (13, 14) for cleaning units (1) being provided with a rotary cutter or blade (3) which is supported on a shaft (6) and rotatable by means of a motor (11), the shaft (6) being mounted in a body (8), characterized in that the blade-protecting device (13, 14) comprises a hub part (13) having a diameter being smaller than the diameter or the largest dimension of the rotatable blade (3), said hub part (13) being arranged substantially coaxially with the shaft (6) adjacent the blade (3) and being freely rotatable relative the body (8), a number of fix, substantially radial arms (14) being rigidly attached to the hub part and extending past the periphery of the blade or of the circle described by the distal ends of the rotating blade, said arms (14) preferably being arranged in locations spaced equϊangularly distributed around the hub part.
2. Blade-protecting device according to claim 1, characterized in that said arms (14) are slightly bent in the direction (15) of rotation of the blades (3) in that part of the arm which projects beyond the periphery of the blade (3).
3. Blade-protecting device according to one of the preceding claims, characterized in that the arms (14) are bent slightly downwards past the edge of the blade (3).
4. Blade-protecting device according to anyone of the preceding claims, characterized in that the arms (14) are slightly bent along their entire free extent in the direction (15) of rotation of the blade (3).
5. Blade-protecting device according to one of the preceding claims, characterized in that the distance of the arms (14) to the blade (3) increases slightly towards the periphery of the blade (3).

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