|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||H01F-003/02 H01F-007/08 F16K-031/06|
|미국특허분류(USC)||251/129.15 ; 251/129.07 ; 251/325 ; 137/625.65 ; 137/625.68 ; 335/255 ; 335/262|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 29 인용 특허 : 9|
A solenoid for a hydraulic valve has an armature chamber having chamber walls. A pole core forms one of the chamber walls and has an axial central bore. An armature is slidably arranged in the armature chamber. The armature has a central receptacle. An armature piston is arranged in the central receptacle of the armature and extends through the axial central bore of the pole core. The armature piston consists of a nonmagnetic material. The armature piston acts on a valve member when moved by the armature piston. The armature piston is a tubular member fo...
[ What is claimed is:] [1.]1. A solenoid comprising:an armature chamber (30) having chamber walls;a pole core (17) forming one of said chamber walls and having an axial central bore (52);an armature (45) slidably arranged in said armature chamber (30);said armature (45) having a central receptacle (46);an armature piston (50) arranged in said central receptacle (46) of said armature (45) and configured to extend through said axial central bore (52) of said pole core (17), wherein said armature piston (50) consists of a nonmagnetic material;said armature ...