US 4,582,462 A · Plastic protecting cap for a polygon nut

Abstract

A plastic protecting cap for the clamping on a polygon nut, with a cylinder casing, which overlaps the polygon nut. The technical problem of the present invention is the provision of a plastic protecting cap, which, by a turning movement, can be clamped safely and firmly on the polygon nut and can be released therefrom by turning in opposite direction again. On the internal face of the casing, at least, two axial profile webs are arranged at places corresponding to polygonal corners, each web comprises a groove profile, open against the axis, with a vertex angle equal to the polygon angle, the radial distance of the vertex of each groove profile from the profile axis being slightly smaller than the radial distance of each corner of the polygon nut profile from the profile axis, and one flange surface of the groove profile is longer, in circumferential direction, than the other flange surface.

Claims8

Dependent claims

A plastic protecting cap adapted to fit over a polygon nut having a plurality of polygonal corners each with a polygon angle, the protecting cap comprising:

(a) a generally cylindrical casing;
and
(b) a plurality of radially inwardly extending webs, each web comprising:
(i) a first flange surface;
(ii) a second, longer flange surface;
and,
(iii) an axially extending groove, the sides of the groove defining a vertex angle approximately equal to the polygon angle, the radial distance from a central axis to the vertex of the vertex angle being smaller than the radial distance from a central axis to the polygon corners of the nut.

4 more elements

Dependencies are inferred from the claim text.

Plastic protecting cap for a polygon nut

Life of this patent

Plastic protecting cap for a polygon nut

Life of this patent

Abstract

Claims8