Patent ID: 9377124
Filing Date: 2016-06-28
CPC Classification: F16K

Claim Text:
1. A solenoid assembly for a transmission, comprising: a solenoid portion; a valve portion, the movement of the valve portion controlled by the solenoid portion; a valve member being part of the valve portion; a magnet core being part of the solenoid portion; an armature being part of the solenoid portion, the armature moveable toward and away from the magnet core for moving said valve member; a return spring disposed between the magnet core and the armature, the return spring biasing the armature away from the magnet core; a magnetic sleeve, the sleeve having a large diameter portion integrally formed with a small diameter portion, the sleeve large diameter portion surrounding the armature and at least part of the magnet core, and the sleeve small diameter portion surrounding the valve portion, such that the valve portion is substantially contained within the sleeve; a supply port formed as part of the sleeve small diameter portion, such that the supply port receives fluid and the supply port is in fluid communication with the valve portion; a first valve seat being part of the valve portion and surrounded by the sleeve small diameter portion, the valve member being selectively in contact with the valve seat; a control port formed as part of the sleeve small diameter portion such that the control port is in fluid communication with the valve portion; an exhaust port formed as part of the sleeve small diameter portion, such that the exhaust port is in fluid communication with the valve portion; a coil for moving said armature, the coil at least partially surrounding the sleeve, the coil being part of the solenoid portion; and a yoke ring at least partially surrounding the coil and being magnetically connected with the core and welded with the sleeve.