Patent ID: 9316076
Filing Date: 2016-04-19
CPC Classification: E21B,F16K,H01F,Y10T

Claim Text:
1. Apparatus for use in operating a downhole well tool comprising: a solenoid housing having an outer wall, a first end, a second end, and a solenoid housing bore, the solenoid housing bore being generally longitudinal extending along an axis through the first end and the second end, wherein the solenoid housing bore creates an inner wall of the solenoid housing, the solenoid housing further having at least one port connecting to the solenoid housing bore through the solenoid housing; at least one plunger disposed in the solenoid housing bore; an electromagnetic solenoid coil disposed at least in part around the plunger; a ball disposed in the solenoid housing bore between the plunger and the second end, the ball movable within the solenoid housing bore by way of a linkage with the plunger; a ball seat member having a seat surface end, an outer wall, a distal end, and a ball seat member bore through the seat surface end and the distal end, the ball seat member being positioned within the solenoid housing bore such that the seat surface end faces the ball, the ball seat member further being removable through the second end of the solenoid housing; at least one ball seat member filter positioned within the ball seat member bore proximate to the ball seat member distal end; a lock nut having a lock nut first end, a lock nut second end, a lock nut bore extending between the lock nut first end and the lock nut second end creating a lock nut inner wall, and threads on the lock nut inner wall for coupling to the outer wall of the solenoid housing proximate the second end; and a seal member having a seal member first end, a seal groove in the seal member first end, a seal member second end, and a seal member bore through the seal member first end and the seal member second end generally aligned longitudinally with the lock nut bore and the solenoid housing bore, wherein the seal member first end is adjacent to the lock nut second end.