B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/58
B24B 21/08 (2006.01) B24B 21/14 (2006.01)
Patent
CA 1254391
ABSTRACT OF THE DISCLOSURE The invention relates to a wide belt sander for the treatment of surfaces of materials where the sanding belt 3 is provided on th sliding contact 6 pressing against the blank 1 with air discharge perforations 10 and 11 provided on the lower side of the sliding contact for the formation of a dynamic air cushion 18 between sliding contact 6 and sanding belt 3. The technologically-advantageous operating properties of such a machine, however, area accompanied by a relatively high comsumption of air. With the aid of the invention, the consumption of air is reduced by providing in the are of the edges 13 of the sanding belt 3 at the running surface 9 of the sliding contact, air-sealing elevations 14, the thickness of which corresponds substantially with the thickness of the air cushion formed between sliding contact 6 and sanding belt 3 (FIG. 2).
472201
Johannsen Hans-Peter
Ridout & Maybee Llp
LandOfFree
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