The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 1990
Filed:
Feb. 03, 1989
Festo K.G., Esslingen, DE;
Abstract
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.