Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1980-10-20
1987-04-28
Parker, Roscoe V.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51273, 403356, 403357, B24B 2300
Patent
active
046603298
ABSTRACT:
A portable abrading or polishing tool including a motor which drives orbitally a head carrying a working pad to which sandpaper or the like may be attached, with the motor of the device driving a carrier about a first axis, and with the carrier mounting the head to turn relative thereto about a second axis. The head and carrier are connected together by bearings, preferably including a large bearing near the head and a smaller bearing offset toward the motor. A counterweight structure is connected to the carrier and located near the axially outer end of the bearings for close coupling with the head and reduction of vibration in use. Fasteners attaching the counterweight to the carrier may serve a secondary purpose of forceably pulling the head and bearings from the carrier during disassembly. An elastomeric handle extending over the motor prevents transmission of low temperatures to a user's hand, and cushions engagement with the motor. The elastomeric handle and an upper portion of a shroud are desirably of generally polygonal, preferably square, horizontal section for best engagement with a user's hand. The pad carrying head may be held against rotation during removal of the pad by a tool extending through an opening in the shroud into engagement with an irregularity formed on the head. A key for retaining the shaft and rotor of the motor against relative rotation is spring urged radially to take up play between the parts.
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"High Performance Pneumatic Finishing Sanders", Hutchins Manufacturing Company, Cat. No. H76 100MTC.
Green William P.
Hutchins Manufacturing Company
Parker Roscoe V.
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