Fastener with Shaving Inhibitor

• US 20100172718A1
• Filed: 01/07/2009
• Published: 07/08/2010
• Est. Priority Date: 01/07/2009
• Status: Active Grant

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Fischer, Robert B., Scachilti, Craig R., Dorman, Kenneth H., Dill, Michael C., GONG, Yongping, Panasik, Cheryl L.
• Granted Patent: US 8,647,038 B2
• Time in Patent Office: Days
• US Class Current: 411/417
• CPC Class Codes: F16B 25/0031 the screw being designed to be screwed into different materials, e.g. a layered structure or through metallic and wooden parts
• CPC Class Codes: F16B 25/0068 with multiple-threads, e.g. a double thread screws
• CPC Class Codes: F16B 25/0084 characterised by geometric details of the tip
• CPC Class Codes: F16B 25/103 by means of a drilling screw-point, i.e. with a cutting and material removing action

Abstract

A fastener with shaving inhibitor for fastening a material such as a metal sheeting panel to a substrate such as metal or wood. The fastener has a notch angled leftwardly with respect to an axis of the fastener, the notch having a first end and a second end, a leading face and a trailing face, each face having outer edges and a common edge at their intersection. At least one of the leading and trailing faces may be substantially planar but may have other shapes, such as concave. Leftwardly angled notch with faces having outer edges may attract and then cut shavings formed from material being installed, thereby reducing the quantity and/or length of shavings, prolonging the life of the material or the structure to which the material is fastened.

Claims

1. A fastener, comprising:

a body having a proximal end, a distal end and an axis,

a head at said proximal end,

a drilling tip at said distal end,

a thread extending radially outwardly from said body, said thread having a first end spaced from said drilling tip and a second end spaced from an underside of said head, and

a notch in said body and said thread, said notch having a first end, a second end, a leading face and a trailing face,

wherein said leading face and said trailing face are angled about 20 degrees leftward with respect to said axis, said second end is spaced about 4/10 inch from said drilling tip, said leading face is generally concave, said trailing face is generally planar, and said trailing face is generally perpendicular to a plane that is tangent to said body at an intersection of said trailing face and said body.

2. A fastener, comprising:

a body having a proximal end, a distal end and an axis,

a head at said proximal end,

a drilling tip at said distal end,

a thread extending radially outwardly from said body, said thread having a first end spaced from said drilling tip and a second end spaced from an underside of said head, and

a notch in said distal end of said body and in said thread, said notch having a first end, a second end, a leading face and a trailing face, wherein said leading face and said trailing face are angled leftward with respect to said axis.

3. A fastener according to claim 2, wherein each of said leading face and said trailing face is angled between about 10 degrees and about 30 degrees leftward with respect to said axis.

4. A fastener according to claim 3, wherein each of said leading face and said trailing face is angled about 20 degrees with respect to said axis.

5. A fastener according to claim 4, wherein at least one of said leading face and said trailing face is generally planar.

6. A fastener according to claim 2, wherein said leading face and said trailing face intersect at an edge, said edge angled leftward with respect to said axis.

7. A fastener according to claim 6, wherein said leading face, said trailing face and said edge are substantially similarly angled leftward with respect to said axis.

8. A fastener according to claim 6, wherein said leading face is concave.

9. A fastener according to claim 2, wherein when said fastener is installed in a substrate, said leading face directs a shaving formed from said substrate into said notch and an outer edge of said trailing face cuts said shaving away from said substrate.