Rigid polymeric cutting article, a rotary tool having the article attached thereto, and a method of using
Assignee3M Innovative Properties Company
InventorDean S. Holmes
Life of this patent
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Abstract
The Invention also provides the rotary tool having the article attached thereto and a method of using. The present invention relates to a cutting article having at least one rigid surface comprising a polymeric material designed for use with a rotary tool which is particularly useful for efficiently removing a material (such as a sealant, for example) from a substrate. Preferably the material is removed with minimal or no damage to the substrate.
Claims46
An article comprising:
- (a) a shaft;
- and
- (b) at least one blade attached to the shaft;
- wherein the article has at least one rigid side cutting surface comprising a polymeric material and at least one rigid bottom cutting surface comprising a polymeric material;
- wherein the article is adapted to remove material from a substrate in a manner such that the substrate is at least essentially undamaged.
An article comprising:
- (a) a shaft;
- and
- (b) at least one blade attached to the shaft;
- wherein the article has at least one rigid cutting surface comprising a polymeric material;
- wherein the article is adapted to remove material from a substrate in a manner such that the substrate is at least essentially undamaged;
- the article having a plurality of blades;
- wherein the blades are similarly shaped;
- wherein the blades are symmetrically positioned with respect to the shaft;
- and
- wherein the blades are helically disposed with respect to the shaft.
An article comprising:
- (a) a shaft;
- and
- (b) at least one blade attached to the shaft;
- wherein the article has at least one rigid cutting surface comprising a polymeric material;
- wherein the article is adapted to remove material from a substrate in a manner such that the substrate is at least essentially undamaged;
- and
- wherein each rigid cutting surface comprising a polymeric material has a flexural modulus of at least about 1000 MPa at 23° C. according to ASTM D790-98.
An article comprising:
- (a) a shaft;
- and
- (b) at least one blade attached to the shaft;
- wherein the article has at least one rigid cutting surface comprising a polymeric material;
- wherein the article is adapted to remove material from a substrate in a manner such that the substrate is at least essentially undamaged;
- and
- wherein each rigid cutting surface comprising a polymeric material each has a toughness of at least about 15 joules/meter according to ASTM D256A-97 Izod Impact Test.
An article comprising:
- (a) a shaft;
- and
- (b) at least one blade attached to the shaft;
- wherein the article has at least one rigid side cutting surface comprising a polymeric material and at least one rigid bottom cutting surface comprising a polymeric material;
- wherein the article is adapted to remove material from a substrate in a manner such that the substrate is at least essentially undamaged;
- wherein the rigid cutting surface is free of abrasive particles.
An article suitable for removing an elastomeric sealant from an aluminum coated substrate, the article comprising:
- a shaft;
- and
- a blade attached to the shaft;
- wherein the blade has a rigid side cutting surface comprising a polymeric material and a rigid bottom cutting surface comprising a polymeric material;
- wherein when the article is in an operating mode, the article is rotated about the shaft and the blade is positioned against the elastomeric sealant, the elastomeric sealant is removed from the aluminum coated substrate without removing portions of the aluminum coated substrate if the blade comes in contact with the aluminum coated substrate.
Dependencies are inferred from the claim text.