Patent · US Expired

Process and a device for the rotation-angle-monitored tightening or loosening of screw connections

US5476014A · kind A · utility

48Cited by

1References

36Claims

0Family size

Assignee

Mercedes-Benz Group AG · DE

Inventors

Markus Lampe · Herrenberg, DE
Torsten Schmidt · Chemnitz, DE
Edgar von Hinueber · Sulzbach/Saar, DE

Key dates

Filing date	Dec 21, 1993
Grant date	Dec 19, 1995
Priority date	—
Expiry date	Dec 21, 2013

Classification

Technology area (CPC G)Physics
CPC primaryG01P15/0888
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a process and a device for the rotation-angle-monitored tightening or loosening of screw connections by means of power driven tools. The absolute rotation angle swept over in the screwing operation with respect to a fixed point about a swivel axis through the rotation axis of the screw connection is measured. An advantageous, relative-position free, absolute measurement of the rotation angle is effected by the use of an absolute rotation-rate measuring sensor. The rotation-rate sensor can herein be configured as a mechanical, compass-like gyroscope, as a rotation sensor or as an acceleration sensor, by means of which a measured value correlated with the absolute rotation angle can be recorded.

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