Patent ID: 7878257
Filing Date: 2011-02-01
Classification: E21B

Abstract:
1. A downhole trigger mechanism comprising: at least two contact points spaced a longitudinal distance from one another, wherein the trigger mechanism is actuated when the contact points of the trigger mechanism are simultaneously contacted by at least two contact points of an actuator, and wherein the contact points of the actuator are spaced a longitudinal distance from one another; a housing having at least a first recess, a second recess, and a third recess; a first member at least partially disposed within the second recess, wherein at least a portion of an inner surface of the first member is one of the contact points of the trigger mechanism; wherein the first member comprises a first end and a second end; a second member disposed at least partially within the third recess, wherein at least a portion of the inner surface of the second member is one of the contact points of the trigger mechanism, wherein the second member comprises a first end and second end; a third member at least partially disposed between the second end of the first member and the first end of the second member, wherein the second member comprises a first end and a second end; a fourth member at least partially disposed within the first recess, wherein the fourth member comprises a first end and a second end, wherein the second end of the fourth member is adjacent the first end of the first member; and a fifth member at least partially disposed within the first recess, wherein the fifth member has an inner diameter that is adjustable, wherein the fifth member comprises a first end and a second end; and wherein the second end of the fifth member is aligned with the first end of the fourth member.