US 11,719,342 B2
Packing structure for compression packing
Jacques Gourde, Ascot Corner (CA); and Maryse Labonté, Ascot Corner (CA)
Assigned to 9245-4404 Quebec Inc., Sherbrooke (CA)
Filed by 9245-4404 QUEBEC INC., Sherbrooke (CA)
Filed on Dec. 8, 2021, as Appl. No. 17/545,360.
Claims priority of provisional application 63/124,178, filed on Dec. 11, 2020.
Prior Publication US 2022/0186836 A1, Jun. 16, 2022
Int. Cl. F16J 15/20 (2006.01); F16J 15/18 (2006.01)
CPC F16J 15/20 (2013.01) [F16J 15/188 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A packing structure for a stuffing box comprising and elongated resilient body for wrapping around a shaft and having an ovoid or approximately polygonal cross-section, the resilient body having a shaft contacting side, an upper side, lateral sides, and a contoured hollow center having a crescent shape defining a concave upper side with upper corners at each end of the concave upper side, and
wherein the upper corners, in an uncompressed state of the packing structure, are substantially above a lowest point of the concave upper side in a direction substantially perpendicular to a long axis of the shaft,
the contoured hollow center further comprising a substantially straight portion opposite the concave upper side that is substantially parallel to the long axis of the shaft and having rounded lower corners at each end of the substantially straight portion, the crescent shape contoured hollow center being substantially symmetrical about an axis perpendicular to the long axis of the shaft and configured to enable the upper side of the resilient body to be resiliently and downwardly compressed towards the hollow center upon application of a compression force on the packing structure exerted substantially parallel to a rotation axis of the shaft to generate a substantially centered pressure distribution along the shaft contacting side, and
wherein the resilient body is configured to dynamically cooperate with the stuffing box and the shaft associated therewith to generate a centered pressure distribution along the shaft contacting side when the packing structure is compressed in the stuffing box.