Patent · US Expired

Arrangement in a rotatable device to protect against over-tightening

US5795116A · kind A · utility

24Cited by

7References

8Claims

0Family size

Assignee

SANDVIK AB · SE

Inventors

Peter Frank · Budapest, HU
Klaus Kraft · Heidelberg, DE
Erwin Nitz · Schmalkalden, DE
Magnus Aspeby · Sandviken, SE

Key dates

Filing date	Mar 10, 1997
Grant date	Aug 18, 1998
Priority date	—
Expiry date	Mar 10, 2017

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16B31/02
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A rotatable device, such as a screw, a bolt, etc., comprises a cylindrical clip (4) inserted into a bore (3) in the head of the rotatable device. The clip (4) is compressed to a certain extent when inserted into the bore in order to confer to the clip a springing effect on the wall of the bore. Further, the clip comprises a socket for the insertion of a suitable turning key. When turning the key, only a maximum torque is transferable to the rotatable device. If this value is exceeded, the clip starts sliding in the bore.

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