Self centering buffing pad with low temperature tuft bonding adhesive
AssigneeMinnesota Mining and Manufacturing Company
InventorsDavid C. Roeker, Ronald L. Ott
Life of this patent
Estimating the term…
Abstract
A buff adapted for self centering engagement with a backup pad comprising a circular body with a first fastener portion on its face surface. The buff includes a stiff flexible backing having a generally planar circular central portion and an annular flange only slightly larger than the diameter of the backup pad projecting from one side surface of its central portion, a second fastener portion fixed on the side surface of its central portion and adapted for engagement with the fastener portion on the backup pad, and a multiplicity of projecting tufts having central portions adhered in the backing by a thermoplastic adhesive that melts and adheres at a temperature under 100.degree. C.
Claims4
A buff adapted for self centering engagement with a backup pad comprising a circular body of a predetermined diameter adapted to be rotated about its axis by a drive motor, having a generally planar circular coaxial face surface, and a first fastener portion on said face surface, said buff comprising:
- a stiff flexible backing having a generally planar circular central portion and an annular flange integral and coaxial with said central portion projecting from one side surface of said central portion, said flange having an inner diameter only slightly larger than the diameter of said backup pad,
- a second fastener portion on said one side surface of said central portion adapted for engagement with the fastener portion on a said backup pad;
- and
- a multiplicity of tufts having central portions engaged in said backing and distal end portions projecting from the side of said backing opposite said one side along said central portion and said flange.
In combination a backup pad comprising a circular body of a predetermined diameter adapted to be rotated about its axis by a drive motor and having a generally planar circular coaxial face surface, and a first fastener portion on said face surface;
- and
- a buff comprising:
- a stiff flexible backing having a generally planar circular central portion and an annular flange integral and coaxial with said central portion projecting from one side surface of said central portion, said flange having an inner diameter only slightly larger than the diameter of said backup pad,
- a multiplicity of tufts having central portions engaged in said backing and distal end portions projecting from the side of said backing opposite said one side along said central portion and said flange;
- and
- a second fastener portion on said one side surface of said central portion adapted for engagement with the first fastener portion on said backup pad.
Dependencies are inferred from the claim text.