Self-retaining door edge guard

1. A door edge guard which is self-retaining when fitted onto and protecting a trailing edge of an automotive vehicle door, the door edge guard comprising:

a metal strip which has length, width, and thickness, a first lengthwise side surface and a second lengthwise side surface which are widthwise opposite each other, a first lengthwise margin which comprises the first lengthwise side surface, a second lengthwise margin which comprises the second lengthwise side surface, and the strip having a transverse cross section which when viewed in a direction looking at the thickness of the metal strip is seen to comprise a) the second lengthwise margin having a first section adjoining the second lengthwise side surface, a second section confronting the first section, and a reverse bend through which the first section joins the second section, b) a curl which joins the second section at a location opposite the reverse bend, which curls in excess of 180° from the second section to cause the first lengthwise side surface to face toward one of the first and second sections which is nearer the first lengthwise side surface, the second section extending linearly away from the curl to the reverse bend, the first lengthwise side surface and the first lengthwise margin meeting at an outer corner and an inner corner, the latter corner being disposed nearer the one of the first and second sections which is nearer the first lengthwise side surface, the one of the first and second sections which is nearer the first lengthwise side surface having a first flat surface which faces the first lengthwise side surface and a second flat surface which is opposite the first flat surface, the second flat surface confronting a surface of the other of the first and second sections, and c) a non-metallic layer having a first zone covering the inner corner, a portion of the first lengthwise side surface adjoining the inner corner, and a portion of the first lengthwise margin adjoining the inner corner, the non-metallic layer having a second zone covering the first flat surface, the shortest distance from the first zone at the inner corner to the second zone where the second zone covers the first flat surface being coincident with an imaginary line which extends from the first zone at the inner corner and is perpendicular to the first flat surface, the shortest distance defining a throat opening which, upon initial advancement of the door edge guard onto a trailing edge of an automotive vehicle door, will become increasingly larger as the cross section expands with flexing of the curl to cause a trailing edge of an automotive vehicle door to be gripped between the first zone at the inner corner and the second zone covering the first flat surface during final advancement of the door edge guard onto a trailing edge of an automotive vehicle door.

2. A door edge guard as claimed in claim 1 in which the first section comprises the first flat surface of the one of the first and second sections which is nearer to and faces the first zone.

3. A door edge guard as claimed in claim 1 in which the second section comprises the first flat surface of the one of the first and second sections which is nearer to and faces the first zone.

4. A door edge guard as claimed in claim 1 in which the curl curls continuously between the second section and the second lengthwise side surface.

5. A door edge guard as claimed in claim 4 in which the curl curls continuously along a constant radius.

6. A door edge guard as claimed in claim 1 in which the curl curls continuously between the second section and a location spaced from the first lengthwise side surface and from that location the curl continues in a straight line to the first lengthwise side surface.

7. A door edge guard as claimed in claim 6 in which the curl curls continuously along a constant radius from the second section to a location spaced from the first lengthwise side surface and from that location the curl continues to the first lengthwise side surface along a smaller constant radius.

8. A door edge guard as claimed in claim 6 in which the curl curls continuously along a constant radius from the second and from that location continues to the first lengthwise side surface along a progressively smaller radius.

9. A door edge guard as claimed in claim 1 in which the metal strip comprises a top surface and a bottom surface extending between the side surfaces, and the non-metallic layer covers not only the first and second zones but also covers all portions of the top, bottom and side surfaces not covered by the first and second zones.

10. A door edge guard as claimed in claim 9 further comprising an additional non-metallic layer covering at least a portion of the non-metallic layer which covers the first and second zones and all portions of the top, bottom and side surfaces not covered by the first and second zones.

11. A door edge guard as claimed in claim 1 in which the metal strip comprises a top surface and a bottom surface extending between the side surfaces, and the non-metallic layer selectively covers less than the entirety of the top, bottom and side surfaces to leave the remainder of those surfaces uncovered.

12. A door edge guard as claimed in claim 11 further comprising an additional non-metallic layer selectively covering at least a portion of the non-metallic layer which selectively covers the remainder of the top, bottom and side surfaces left uncovered.

13. A door edge guard as claimed in claim 11 further comprising a primer paint coat covering to at least some of the remainder of the top, bottom, and side surfaces left uncovered, and a paint coat of a desired color covering the primer paint coat.

14. A door edge guard as claimed in claim 11 further comprising paint of a desired color covering at least a portion of the non-metallic layer.