US 11,988,063 B2
Spring-loaded self-adjusting stuffing box
Branden Wiggins, Aztec, NM (US)
Filed by Branden Wiggins, Aztec, NM (US)
Filed on Sep. 24, 2021, as Appl. No. 17/484,879.
Claims priority of provisional application 63/084,753, filed on Sep. 29, 2020.
Prior Publication US 2022/0098953 A1, Mar. 31, 2022
Int. Cl. E21B 33/08 (2006.01); E21B 17/042 (2006.01)
CPC E21B 33/08 (2013.01) [E21B 17/042 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An improved wellhead stuffing box device comprising:
an elongate stuffing box configured to attach to a wellhead stuffing box having an upper end thereof, the elongate stuffing box comprising:
a spring configured to be received in the elongate stuffing box and having a corresponding first end and second end;
an adapter plate configured to interface between an existing packing in the elongate stuffing box and the first end of the spring;
a loading plate configured to interface with the second end of the spring, wherein the loading plate is provided with an exterior-threaded tubular portion extending upwardly from the second end of the spring, wherein a top end portion is provided on the loading plate extending upwardly from the exterior-threaded tubular portion and wherein a plurality of opposed flat surfaces is provided about the top end portion of the loading plate;
an elongate tubular body provided with inner threads on an upper portion thereof, wherein the exterior-threaded tubular portion of the loading plate is configured to threadingly engage the inner threads of the upper portion of the elongate tubular body, wherein interior threads are provided on a lower portion of the elongate tubular body, an outer wall provided about the upper end of the wellhead stuffing box, an exterior-threaded portion is provided on the outer wall of the wellhead stuffing box and is configured to threadingly engage the interior threads of the lower portion of the elongate tubular body;
wherein the plurality of opposed flat surfaces at the top end portion of the loading plate extend through and upwardly from the upper portion of the elongate tubular body; and
wherein the adapter plate is free to move longitudinally within the elongate stuffing box on a concentric axis parallel to a polish rod therein.