Patent · US Expired

Center-free large roller bearing

US5074677A · kind A · utility

19Cited by

5References

8Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Dietrich Andree · Dortmund, DE
Dieter Becker · Neunburg vorm Wald, DE
Heinrich Siemensmeyer · Dortmund, DE
Johannes Wozniak · Lippstadt, DE

Key dates

Filing date	Aug 16, 1990
Grant date	Dec 24, 1991
Priority date	—
Expiry date	Aug 16, 2010

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/2696
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A large open-center roller bearing consisting of single or multiple outer and inner rings with rollers rolling over races between the rings, wherein one ring can accommodate an ultrasonic probe and the other ring has a contact surface. The object is to provide a bearing that can be simply and reliably tested by ultrasound. One or more contact surfaces (19, 24, and 25) extend around one or more of the outer surfaces of the ring (2 or 3) being tested.

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