Patent ID: 9341043
Filing Date: 2016-05-17
CPC Classification: E21B

Claim Text:
1. A pressure control apparatus, comprising: a bearing assembly configured to engage an item of oilfield equipment being delivered through the oilfield pressure control apparatus, wherein the bearing assembly has an upper portion and a lower portion; an upper stripper rubber coupled to the upper portion; a lower stripper rubber coupled to the lower portion and configured to seal around the item of oilfield equipment; a first misalignment limiter coupled proximate the lower stripper rubber, the first misalignment limiter configured to support the lower stripper rubber during lateral deflection of the lower stripper rubber created by movement of the item of oilfield equipment; wherein the first misalignment limiter further comprises a first seal bracing portion configured to laterally surround the lower stripper rubber, wherein the first seal bracing portion comprises a first cylindrical sleeve; wherein the first misalignment limiter further comprises a first equipment bracing portion configured to align an outer surface of the item of oilfield equipment as the item of oilfield equipment passes therethrough; wherein the first equipment bracing portion comprises a first abutting portion having a first abutting surface, wherein an inner diameter defined by the first abutting surface is greater than an inner diameter of the lower stripper rubber and greater than or equal to an inner diameter of the bearing assembly; and wherein an end of the first equipment bracing portion projects beyond a distal end of a nose of the lower stripper rubber.