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US 4,899,495 AGranted
Disc wheel sanding machine
AssigneeFesto AG & Co.
InventorsKarl Attinger, Wolfgang Kuch, Peter Maier
Life of this patent
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AssigneeFesto AG & Co.
InventorsKarl Attinger, Wolfgang Kuch, Peter Maier
Estimating the term…
A disc wheel sanding machine includes a disc wheel rotated by a drive shaft. The sanding machine has a dust extraction device with a dust extraction hood comprising an extraction chamber which surrounds the disc wheel. The hood of the dust extraction device ends above the disc wheel bottom, and a closing wall in the form of a bristle ring or such like protrudes from the bottom of the hood and can be positioned on the work piece. The bristle ring only encircles a part of the periphery of the disc wheel and forms a suction slot diverging outwardly toward the front end in the direction of rotation of the disc wheel and is open toward the work piece. The sanding dust is sucked through the suction slot at the disc wheel periphery into the extraction chamber. The rear end of the bristle ring with regard to the direction of rotation closes in on the disc wheel periphery and forms a rear seal for the suction slot. Furthermore the hood comprises a sealing section extending over a portion the circumference which does not seal around the disc wheel, leaving a sealing distance allowing for the disc wheel rotation.
A disc wheel sanding machine, comprising a housing, a motor driven rotatable sanding disc mounted to said housing for rotation about a substantially vertical axis, said sanding disc having a round periphery with a horizontal sanding surface exposed out of said housing for contact with a work piece to be sanded, a dust extraction hood connected with said housing and including a sealing wall portion spaced closely around only a portion of the periphery of said disc and a further wall portion spaced closely to the periphery of said disc at a first end of said further wall with the spacing from the further wall portion to the disc widening along a peripheral direction of said disc to a second end of said further wall portion located radially outwardly with respect to the periphery of said disc and defining a dust withdrawal slot with said disc, extending into said dust extraction hood.
A disc wheel sanding machine comprising a housing, a motor driven rotatable sanding disc mounted to said housing for rotation and having a rounded periphery with a disc surface exposed out of said housing for contact with a work piece, a dust extraction hood connected to said housing and including a skirt portion extending around said disc having a sealing wall portion spaced closely around the periphery of said disc and a further wall portion forming a continuation of said sealing wall portion, said further wall portion having a first end spaced closely to said disc periphery, the distance from said further wall portion to said disc widening along a peripheral direction of said disc and said further wall portion having a second end positioned radially outwardly of said disc, said further wall cooperating with said disc periphery to define a dust withdrawal slot with a dust withdrawal slot opening adjacent said further wall second end.
Dependencies are inferred from the claim text.