Patent ID: 7865995

Claim:
An apparatus for cleaning a gas tube having a longitudinal direction, the apparatus comprising: an actuator; and a plunger head attached to the actuator, wherein the actuator is configured to reciprocate the plunger head along the longitudinal direction between a retracted position and an extended position and to rotate the plunger head from a first angular position to a second angular position; wherein at least a portion of the plunger head is located within the gas tube when the plunger head is in the extended position; and wherein the plunger head comprises at least one tine including a portion that extends parallel to the longitudinal direction when the plunger head is positioned within the gas tube, wherein the plunger head comprises: a support member; and a plurality of tines including the at least one tine extending from the support member, respective ones of the plurality of tines including a first portion extending radially away from a longitudinal axis extending through the support member and longitudinally away from a coupling location on the support member and a second portion extending away from the first portion parallel to the longitudinal axis.