EP 0838830 B1 20040121 - Electromagnetic trip with amorphous carbon film and his method of manufacturing
Title (en)
Electromagnetic trip with amorphous carbon film and his method of manufacturing
Title (de)
Elektromagnetischen Auslöser mit einer amorphen Kohlenstoffbeschichtung und sein Fertigungsverfahren
Title (fr)
Relais de déclenchement électromagnétique à revetement de carbone amorphe, et son procédé de fabrication
Publication
Application
Priority
FR 9613143 A 19961023
Abstract (en)
[origin: EP0838830A1] The surfaces (10, 14) of the core (1) and of the armature (8) are finished to give a coefficient of roughness between 0.03 and 0.05 mu m, defined as the mean height of the profile above and below the mean line. The peaks between the surfaces ensure point contact and the surfaces are covered in a layer of amorphous carbon of thickness less than 1 mu m. The DLC diamond layer comprises a mixture of sp<2> and sp<3> hybrids giving a Vickers hardness between 30 and 70 GPa and a coefficient of friction of about 0.1 for a load of 5 N. The enrichment of this layer is by the physical or chemical deposition under vacuum of specific elements, notably fluorine, boron, silicon or nitrogen.
IPC 1-7
IPC 8 full level
H01H 71/32 (2006.01)
CPC (source: EP)
H01H 71/327 (2013.01)
Designated contracting state (EPC)
CH DE ES GB IT LI
DOCDB simple family (publication)
EP 0838830 A1 19980429; EP 0838830 B1 20040121; DE 69727278 D1 20040226; DE 69727278 T2 20041209; ES 2213811 T3 20040901; FR 2754933 A1 19980424; FR 2754933 B1 19981127
DOCDB simple family (application)
EP 97410111 A 19971007; DE 69727278 T 19971007; ES 97410111 T 19971007; FR 9613143 A 19961023