Rolling contact bearing with rotational speed measuring device

US5898388A · kind A · utility

Assignee

• Fag Automobiltechnik AG · DE

Inventors

• Heinrich Hofmann · Schweinfurt, DE
• Rainer Breitenbach · Gochsheim, DE
• Harald Merklein · Schweinfurt, DE
• Peter Niebling · Bad Kissingen, DE
• Roland Langer · Schwanfeld, DE
• Josef Binder · Huntington, US
• Marcus Weser · Hamburg, DE

Key dates

• Filing date: Mar 13, 1998
• Grant date: Apr 27, 1999
• Expiry date: Mar 13, 2018

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2326/02
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A rolling contact bearing with rotational speed measuring device, in particular a wheel bearing for motor vehicles for telemetric transmission of energy and signal between bearing and environment, insensitive to tolerances of the bearing and its surrounding parts, with simple and cost-effective construction and small dimensions. A first telemetry unit is integrated in the inter-ring seal. It comprises pulse transmitter, rotational speed sensor, telemetry electronics and a miniature coil, which is inductively coupled with a further telemetry unit, which is fitted axially outside the bearing, and which supplies the first telemetry unit with energy and receives its signals.