EP 1029391 A1 20000823 - ELECTROMECHANICAL TRANSDUCER
Title (en)
ELECTROMECHANICAL TRANSDUCER
Title (de)
ELEKTROMECHANISCHER WANDLER
Title (fr)
TRANSDUCTEUR ELECTROMECANIQUE
Publication
Application
Priority
- GB 9803298 W 19981103
- GB 9723194 A 19971103
Abstract (en)
[origin: WO9923744A1] The electromechanical transducer consists of a stator (1) having a plurality of inner pole pieces (2) that describe a helix and a rotor having magnetic poles that similarly describe a helix. The rotor is constrained, for example by means of a spiral spring, so that the rotor can only move axially, no rotary movement is permitted. Each pole piece (2) of the stator is connected to a radial core (3) about which respective coils (5,6) are wound. Thus, the coils too describe a helix about the axis of the stator (1). The structure of the transducer results in the magnetic circuit having a helical component that contributes to the axial movement of the rotor. The transducer benefits from many of the advantages of rotary motors whilst providing linear movement.
IPC 1-7
IPC 8 full level
H02K 33/16 (2006.01); H02K 35/02 (2006.01); H02K 41/02 (2006.01)
CPC (source: EP)
H02K 33/16 (2013.01); H02K 35/02 (2013.01); H02K 41/02 (2013.01)
Citation (search report)
See references of WO 9923744A1
Designated contracting state (EPC)
DE ES FR GB IT NL
DOCDB simple family (publication)
WO 9923744 A1 19990514; EP 1029391 A1 20000823; GB 9723194 D0 19980107
DOCDB simple family (application)
GB 9803298 W 19981103; EP 98951600 A 19981103; GB 9723194 A 19971103