Patent · US Expired

Weathervane with magnetic bearing

US4895023A · kind A · utility

4Cited by

3References

8Claims

0Family size

Assignee

Franklin France · FR

Inventors

Michel M. Roubinet · Paris, FR
Jacques A. Bauman · Saint-Fargeau-Ponthierry, FR

Key dates

Filing date	Oct 5, 1988
Grant date	Jan 23, 1990
Priority date	—
Expiry date	Oct 5, 2008

Classification

Technology area (CPC G)Physics
CPC primaryG01P13/02
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A weathervane includes a pointer (8a, 8b) provided with a vane and mounted for rotation about a vertical shaft (1) by a magnetic bearing. The magnetic bearing is comprised of a lower block (2a) made integral with the shaft (1) and of an upper block (2b) capable of rotating freely about the shaft. An upper face of the lower block (2a) and a lower face of the upper block (2b) are each provided with a permanent magnet (10a, 10b), which face each other and are oriented so that they have the same polarity. The pointer (8a, 8b) is made integral with the upper block (2b).

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