Patent ID: 7287739

Claim:
A well choke apparatus, comprising: a choke housing having a flow passage; a choke element carried in the choke housing for linear movement in forward and rearward directions relative to the choke housing to vary a flow area through the flow passage; an actuator housing located rearward of the choke housing; an actuator rod extending forward from the actuator housing to the choke element for linearly moving the choke element; a drive mechanism having a motor and a drive train in the actuator housing for selectively extending and retracting the rod; and a quick closure assembly having a rearward side mounted to a forward side of the actuator housing and a forward side mounted to a rearward side of the choke housing for moving the actuator housing, the entire drive mechanism and the rod in unison with each other in a closing direction relative to the choke housing to cause the choke element to close the flow passage.