Patent · US Expired

Automatic balancing device

US7159952B2 · kind B2 · utility

4Cited by

5References

7Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Christian Koschel · Augsburg, DE
Rolf Spangenberg · Gauting, DE
Eberhard Lang · Erligheim, DE

Key dates

Filing date	Mar 14, 2005
Grant date	Jan 9, 2007
Priority date	—
Expiry date	Mar 14, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/2128
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An automatic balancing device for a rotatable system includes a track (18) arranged about a rotational axis (H) of the rotatable system and having two surfaces (22a, 22b) inclined toward each other in a direction of a centrifugal force acting (F) acting on at least one balancing body (20) which is received in a cross-section formed by the two inclined surfaces (22a, 22b) and limited by an elastic locking element (24) arranged therebetween for displacing the at least one balancing body (20) away from the inclined surfaces (22a, 22b) in a direction opposite the direction of the centrifugal force (F) and for pressing the at least one balancing body (20) against an inner boundary of the track (18) for locking the balancing body (20) when a rotational speed of the system is below a predetermined threshold.

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