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US 7,094,140 B2Granted
Abrasive sanding surface
AssigneeOnfloor Technologies, L.L.C.
InventorsSimon Palushi, Howard Goldberg
Life of this patent
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Abstract
An abrasive sandpaper system having a backing plate (16) with a canted outer periphery (28) and an off-centered aperture (26) for interlocking with lugs (18) of a power driver (12). The sandpaper (30) has a canted outer periphery (38) for riding over raised edges (45) of an uneven wood deck. The backing plate may have a pocket (50) with a side wall (60) to receive the substrate layer (58) of sandpaper (54).
Claims4
An abrasive sandpaper system for a power tool comprising:
- a backing plate constructed to be mounted on a driver of said power tool with a positive interlocking device;
- a substrate being semi-rigid to retain its shape when not flexed under load and removably mountable to said backing plate;
- said substrate having an abrasive surface being made from hard grit particles being affixed onto said substrate;
- said interlocking device comprises said backing plate having at least one off-centered aperture sized to interlock with complementarily shaped and similarily sized off-centered lugs on said driver such that the lug abuts both radial sides of the aperture;
- and
- a central screw for clamping the backing plate onto said driver and securing said lugs into said apertures.
3 more elements
Dependencies are inferred from the claim text.