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US 6,139,411 AGranted
Disc sander
AssigneeRyobi North America, Inc.
InventorsRobert G. Everts, Kenneth M. Brazell, Kenneth J. Weger
Life of this patent
Estimating the term…
Abstract
A disc sander having a scroll type vane pump embodied in a shroud enclosing the back side of a sanding disc. The inlet ports of the pump are coupled by a manifold to a location adjacent to the front face of the sanding disc at a location where the sanding dust and debris are generated. A tortious serpentine path is provided about the periphery of the pump housing which reduces pump noise and increases pump efficiency. The fins of the vane pump are provided on the back side of the sanding disc.
Claims23
A disc sander comprising:
- a base having a shroud, said shroud including a scroll type baffle forming a fan housing, the fan housing having at least one inlet port and an exit nozzle;
- an electric motor attached to said base, said electric motor having an output shaft extending normal to said shroud;
- a sanding disc attached to said shaft adjacent to said shroud, said sanding disc having a plurality of spaced apart fins extending into said fan housing and forming therewith a vane type pump;
- and
- an inlet manifold having an inlet disposed adjacent to a surface of said sanding disc on the side opposite said shroud and an outlet connected to said at least one inlet port to said fan housing the inlet manifold conducting an air flow from the region in front of the sanding disc on the side opposite the shroud into the fan housing.
2 more elements
A disc sander comprising:
- a base having at least a pair of mounting feet;
- a shroud attached to said base, said shroud having an annular lip;
- a motor having an output shaft said motor attached to said shroud;
- a sanding disc attached to said shaft of said motor;
- said sanding disc circumscribed by said annular lip;
- a scroll type baffle attached to said shroud on the side facing said sanding disc, said scroll type shroud and said sanding disc forming a pump housing;
- at least one inlet port for providing air to said pump housing;
- a plurality of spaced apart radial fins attached to said sanding disc and rotatable therewith, said plurality of radial fins extending into said pump housing;
- a manifold having an inlet provided adjacent to said sanding disc on the side opposite said motor and an outlet connected to said at least one inlet port to said pump housing the manifold conducting an air flow from the region in front of the sanding disc on the side opposite the motor into the fan housing;
- and
- an outlet nozzle for said pump housing.
8 more elements
Dependencies are inferred from the claim text.