Belt grinder attachment for powered rotary tools
First Claim
1. A belt grinder attachment in combination with a hand held rotary powered tool, said attachment comprising:
- a body member having a first axial through bore adapted to receive one end of said tool therein, and a second blind bore in said body member extending normal to the axis of said first bore;
a straight unitary arm having one end received in said second blind bore to extend substantially normal to an elongated axis of the tool;
spring means in said second blind bore biasing said arm outwardly from said body member;
a driven pulley assemby mounted on the opposite free end of said arm and within a plane defined by said arm, said plaane lying normal to the axis of said first axial through bore, said assembly including a driven pulley mounted for rotation about its own axis which is normal to the plane of said arm;
a drive pulley adapted to be mounted on one end of and driven by the tool, said drive pulley being positioned in said plane and aligned with said driven pulley; and
an endless grinding belt mounted on and passing around said drive and driven pulleys to follow a path along said plane with the width of said belt extending normal to said plane.
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Accused Products
Abstract
A belt grinder attachment for powered rotary tools mounts an abrasive belt for movement transverse to the axis of the tool for ease of alignment of the belt on a work piece. The attachment body member can either be threaded onto the tool housing or be clamped thereon. An arm extends from the body member and is radially adjustable for tensioning the belt. A driven pulley assembly is mounted on the free end of the arm and provides for the belt to run either directly on opposite sides of the arm or to one side only. The normal chuck of the tool is replaced by a drive pulley and the belt extends around both the drive and driven pulleys.
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Citations
19 Claims
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1. A belt grinder attachment in combination with a hand held rotary powered tool, said attachment comprising:
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a body member having a first axial through bore adapted to receive one end of said tool therein, and a second blind bore in said body member extending normal to the axis of said first bore; a straight unitary arm having one end received in said second blind bore to extend substantially normal to an elongated axis of the tool; spring means in said second blind bore biasing said arm outwardly from said body member; a driven pulley assemby mounted on the opposite free end of said arm and within a plane defined by said arm, said plaane lying normal to the axis of said first axial through bore, said assembly including a driven pulley mounted for rotation about its own axis which is normal to the plane of said arm; a drive pulley adapted to be mounted on one end of and driven by the tool, said drive pulley being positioned in said plane and aligned with said driven pulley; and an endless grinding belt mounted on and passing around said drive and driven pulleys to follow a path along said plane with the width of said belt extending normal to said plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification