Stuffing box assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 12, 1991
Grant Date -
N/A
app pub date -
Nov 22, 1989
filing date -
Nov 22, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stuffing box assembly comprising a body which has a bore defined by a generally cylindrical wall and a shaft extending concentrically through the bore. A sleeve is disposed in the bore in surrounding relationship to the shaft, the sleeve having a cylindrical portion and an annular flange, the sleeve defining an annulus between the cylindrical portion and the wall defining a bore. At least one and preferably several annular members formed of an elastomeric material are disposed in the annulus. A stop means limits movement of the annular member away from the flange portion of the sleeve, the annular members being disposed between the flange portion and the stop means. One or more seals or packings for sealing between the shaft and the wall are disposed between the shaft and the wall on the opposite side of the flange portion from the annular member. An adjustable packing gland or the like urges the seal or packings against the flange portion of the sleeve such that the annular member is compressed and exerts a reactive force against the flange portion, the annular members also serving to form a seal between the wall and the cylindrical portion of the sleeve.
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