Global patent index - EP 1029332 A1

EP 1029332 A1 2000-08-23 - CASCADING ELECTROMAGNETIC ARMATURE

Title (en)

CASCADING ELECTROMAGNETIC ARMATURE

Title (de)

GESTUFTER ELEKTROMAGNETANKER

Title (fr)

INDUIT ELECTROMAGNETIQUE EN CASCADE

Publication

EP 1029332 A1 (EN)

Application

EP 98956490 A

Priority

  • US 9823342 W
  • US 6403597 P

Abstract (en)

[origin: WO9923674A1] The present invention is a two or more-piece cascading armature for use in a solenoid. The cascading armature comprises a core (174) of conductive material slidably disposed within at least one conductive sleeve (176), which, in turn, is disposed in the solenoid housing. The core and sleeve are operably linked. In various embodiments, the cascading armature may contain multiple conductive sleeves in varying sizes and proportions to the core. When the cascading armature is installed in the conductive housing, both the sleeve rim (179) and the core face (172) are presented to the pole member face across the working air gap. In the deactivated position the working air gap is different for the core and the sleeve because the rim of the sleeve extends beyond the core and is accordingly closer to the pole member face than the core.

IPC 1-7 (main, further and additional classification)

H01F 3/00; H01F 7/00; H01F 7/08

IPC 8 full level (invention and additional information)

H01F 7/16 (2006.01); H01F 3/00 (2006.01); H01F 7/08 (2006.01)

CPC (invention and additional information)

H01F 7/081 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9923674 A1 19990514; EP 1029332 A1 20000823; EP 1029332 A4 20010124; JP 2001522140 A 20011113

INPADOC legal status

2001-05-02 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20010306

2001-01-24 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20001213

2001-01-24 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-01-24 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7H 01F 3/00 A, 7H 01F 7/00 B, 7H 01F 7/08 B, 7H 01F 7/16 B

2000-08-23 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000531

2000-08-23 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE