Dust collection system for a belt sander
AssigneeBlack & Decker Inc.
InventorsJason R. Melvin, Michael J. Walstrum, Carl F. Merhar, III, Gregory A. Rice, John McKibben, Danielle V. Gayle, Jonah Myerberg
Life of this patent
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Abstract
An electrically powered belt sander comprising a housing, a dust flow path defined by the housing, a motor mounted in the housing at a first location and having an output shaft, a fan connectable to the motor output shaft and rotateably mounted in the housing at a second location a distance from the motor output shaft, a belt connectable between the motor output shaft and the fan whereby the rotation of the motor output shaft drives the rotation of the fan, and a damper located in the dust flow path and operable for blocking the dust flow path.
Claims13
An electrically powered belt sander comprising:
- a housing;
- a motor mounted in the housing at a first location and having an output shaft;
- a dust collection fan rotateably mounted in the housing at a second location a distance from the motor output shaft;
- a drive roller mounted in the housing;
- a first transmission between the motor output shaft and the drive roller;
- and
- a second transmission between the motor output shaft and the dust collection fan the second transmission selectably disconnectable for preventing rotation of the dust collection fan without disconnecting the first transmission to the drive roller.
A method of disabling the dust collection air flow of an electrically powered portable belt sander for sanding operation without dust collection, said method comprising the steps of:
- providing a portable belt sander including a motor, a drive roller driven by the motor via a first drive belt, and a dust collection fan driven by the motor via a second drive belt, and
- disconnecting the second drive belt.
An electrically powered belt sander comprising:
- a housing having a first end and a second end and defining a dust collection air flow path;
- a first roller assembly mounted in the housing proximate the first end of the housing;
- a second roller assembly mounted in the housing proximate the second end of the housing and including a driven pulley, the driven pulley including a first portion and a second portion;
- an abrasive belt mounted around the first roller and the second roller and defining a loop;
- a motor mounted in the housing between the first roller and the second roller and within the loop of the abrasive belt, the motor including an output shaft bearing a drive pulley;
- a radial dust collection fan rotatably mounted in the housing above the loop of the abrasive belt and within the dust collection air flow path, the fan including a suction center, a discharge volute, and a pulley portion;
- a first drive belt mounted around the drive pulley and the first portion of the driven pulley;
- a second drive belt mounted around the second portion of the driven pulley and the pulley portion of the dust collection fan;
- and
- a damper integrally and rotatably mounted in the housing and located in the dust flow path on the suction side of the dust collection fan and selectably movable from a first installed position, wherein the dust flow path is blocked, to a second installed position. wherein the dust flow path is not blocked, the damper including a switch extending thorough a slot in the housing, and the switch is user operable for rotating the damper between the first position and the second position.
Dependencies are inferred from the claim text.