Patent · US Expired

Detachable fastener including a screw element and a securing ring

US6935822B2 · kind B2 · utility

15Cited by

8References

18Claims

0Family size

Assignee

KAMAX-Werke Rudolf Kellermann GmbH & Co. KG · DE

Inventors

Gunther Hartmann · Munich, DE
Wolfgang Sommer · Gemünden (Wohra), DE
Frank Wagner · Reiskirchen, DE

Key dates

Filing date	Feb 6, 2003
Grant date	Aug 30, 2005
Priority date	—
Expiry date	Mar 28, 2023

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16B41/002
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A detachable fastener includes a screw element and a securing ring. The screw element and the securing ring each include cooperating wedge-shaped surface tooth arrangements and two different pairs of stop surfaces. The wedge-shaped surface tooth arrangements face one another and form sliding surfaces sliding upon one another in a loosening direction of rotation resulting in an increase of the axial force. The first pair of stop surfaces transmits torque in a tightening direction of rotation. The second pair of stop surfaces transmits torque in a loosening direction of rotation. The stop surfaces are arranged with a clearance existing between one another such that the wedge-shaped surface tooth arrangements can slide upon one another without skipping.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.