Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Washer adjacent head and having a particular shape or...
Patent
1984-09-27
1986-04-15
Dorner, Kenneth J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Washer adjacent head and having a particular shape or...
411373, 411377, 411431, 411907, A47G 300, F16B 3714
Patent
active
045824622
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.
REFERENCES:
patent: 1254514 (1918-01-01), Lehmann
patent: 1694459 (1928-12-01), Volckhausen
patent: 2551834 (1951-05-01), Ferguson
patent: 2819642 (1958-01-01), Refrigeri
patent: 3548704 (1970-12-01), Kutryk
Dorner Kenneth J.
Lindsey Rodney M.
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