Title (en)

ANGULAR MOTION MEASURING DEVICE

Title (de)

VORRICHTUNG ZUR DREHBEWEGUNGSMESSUNG

Title (fr)

DISPOSITIF DE MESURE DE MOUVEMENT ANGULAIRE

Publication

EP 1040372 A1 20001004 (EN)

Application

EP 98961316 A 19981217

Priority

• GB 9803814 W 19981217
• GB 9726764 A 19971218

Abstract (en)

[origin: WO9932906A1] A measuring device such as a gravity gradiometer has a levitation coil (26) and a float body (12). The float body (12) is capable of being magnetically levitated by the coil (26) on a levitation axis (L) about which angular movement of the float body (12) relative to the coil (26) is to be detected. Angular motion of the float body (12) is effected using field-modulating strips (36) which are carried by the float body (12) and which are rotatable with the latter relative to pairs of coils (38, 40; 42, 44). The levitation coil (26) lies on the surface of a sphere. The float body (12) has a concave lift surface sensitive to levitational forces exerted by the levitation coil (26) in use. The lift surface also lies on the surface of a sphere.

IPC 1-7

G01V 7/00; G01C 9/14

IPC 8 full level

G01C 9/14 (2006.01); G01V 7/00 (2006.01)

CPC (source: EP)

G01C 9/14 (2013.01); G01V 7/00 (2013.01)

Citation (search report)

See references of WO 9932906A1

Designated contracting state (EPC)

DE ES FR GB IT NL

DOCDB simple family (publication)

WO 9932906 A1 19990701; AU 1677699 A 19990712; EP 1040372 A1 20001004; GB 9726764 D0 19980218; ZA 9811643 B 19990624

DOCDB simple family (application)

GB 9803814 W 19981217; AU 1677699 A 19981217; EP 98961316 A 19981217; GB 9726764 A 19971218; ZA 9811643 A 19981218