WIDE FLAP WHEEL

• US 3,645,049 A
• Filed: 10/21/1968
• Issued: 02/29/1972
• Est. Priority Date: 10/21/1968
• Status: Expired due to Term

• Current Assignee: Conrad T. Freerks, James C. Huppert, Ralph E. James
• Original Assignee: Conrad T. Freerks, James C. Huppert, Ralph E. James
• Inventors: Freerks, Conrad T., Huppert, James C., James, Ralph E.
• Primary Examiner(s): Simpson, Othell M.
• Application Number:
  US04/769,041
• Time in Patent Office: 1,226 Days
• Field of Search: 51/330-338 15/179-183
• US Class Current: 451/469
• CPC Class Codes: B24D 13/06 the flaps or strips being individually attached

Abstract

An abrasive flap-wheel comprising a plurality of abrasive packets secured about the periphery of a rotating hub wherein each packet comprises a plurality of abrasive sheets attached to a flexible securing root, the root being affixed to the rotating hub within a peripheral opening.

Claims

1. A replaceable abrasive packet adapted to be inserted into a keyhole-shaped opening located adjacent to the periphery of a rotatable rigid core wherein said opening has a longitudinally extending chamber defined by a substantially cylindrical wall, and a radial-axial slot extending from the chamber to the periphery of the core, said packet comprising:

1. a plurality of abrasive sheets overlapped to form a tablet of said sheets;

2. a securing root which is relatively inextensible when subjected to centrifugal force caused by the rotation of the core, said root comprising a loop of flexible material formed into a. a bulbous portion to be positioned within the longitudinally extending chamber to afford engagement with a portion of the cylindrical wall for radially securing said root to the rigid core, and b. two juxtaposed end portions extending from said bulbous portion and overlapping said abrasive sheets;

3. a spacer located between said end portions and radiallyaxially extending from a position adjacent said bulbous portion to a position radially beyond said inner edge of said tablet to provide additional stiffness to said two juxtaposed end portions; and

4. means securing said tablet of abrasive sheets to said juxtaposed end portions of said securing root wherein the radially inner edge of said tablet is positioned adjacent to said bulbous portion to afford locating said tablet closely adjacent to the periphery of the core and wherein the radially outer edge of said tablet will abrasively engage the material to be abraded upon rotation of the rigid core.

2. A replaceable abrasive packet according to claim 1 further comprising rod means affixed to said root within said bulbous portion for affording engagement with a portion of said cylindrical wall to additionally secure said root to the rigid core.

3. a spacer located between said end portions and radially-axially extending from a position adjacent said bulbous portion to a position radially beyond said inner edge of said tablet to provide additional stiffness to said two juxtaposed end portions;

and

4. A replaceable abrasive packet according to claim 1, wherein said spacer comprises a sheet of abrasive interposed between said end portions and extending to the radially outer edge of said abrasive sheets.

5. A replaceable abrasive packet according to claim 1, wherein said securing root comprises a flexible synthetic polymeric material.

6. A replaceable abrasive packet according to claim 1, wherein said securing root comprises a flexible rubbery material that is reinforced with a high strength fabric.

7. A replaceable abrasive packet adapted to be inserted into a keyhole-shaped opening located adjacent to the periphery of a rotatable rigid core wherein said opening has a longitudinally extending chamber defined by a substantially cylindrical wall, and a radial-axial slot extending from the chamber to the periphery of the core, said pocket comprising:

8. A replaceable abrasive packet according to claim 7, further comprising:

a spacer located between said end portions and radially-axially extending from a position adjacent said bulbous portion to a position radially beyond said inner edge of said tablet to provide additional stiffness to said two juxtaposed end portions.

9. A replaceable abrasive packet according to claim 1, wherein said flexible material includes a strip of nylon cloth impregnated with chlorosulfonated polyethylene.