Patent · US Expired

Means for monitoring holding brake wear

US6651494B1 · kind B1 · utility

4Cited by

3References

11Claims

0Family size

Assignee

Mammesmann AG · DE

Inventors

Thomas Herterich · Schillingsfürst, DE
Wolfgang Ruppel · Bad Liebenzell, DE
Eberhard Schemm · Lohr am Main, DE

Key dates

Filing date	Aug 26, 2000
Grant date	Nov 25, 2003
Priority date	—
Expiry date	Apr 9, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D2121/22
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A highly dependable process and device for monitoring wear for a holding brake is performed via an electronically controlled brake test. A shaft which is drivable by a motor can be braked by the holding brake. A reference angular position which is to be traveled by the motor during the brake test and which deviates from the current actual angular position of the motor is preset along with a maximum limit torque to be applied by the motor during the brake test are preset for the motor. During the brake test, the actual angular position of the shaft is monitored to determine whether the shaft rotates. The existence of wear in the holding brake is evidenced by rotation of the shaft during the brake test.

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