Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1985-04-05
1986-11-18
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 64, 277105, 277193, F16J 1518
Patent
active
046231528
ABSTRACT:
An improvement for a stuffing box for sealing a shaft, such as a valve stem, in a first housing, such as a valve body, where the shaft extends through the housing and original seal devices are provided in an annular chamber or packing gland between the housing and the shaft with a first compression device provided to compress the packing longitudinally with respect to the shaft to allow radial expansion of the material and sealing in the packing gland where the present invention provides a second housing, which is generally cylindrical in shape to also surround the shaft and define an annular space and is split into first and second halves adapted to be connected together to surround the shaft and define a second packing gland, a packing compression device, which is longitudinally split and has a bearing surfaces which are adapted to be received in the annular area or packing gland defined by the second housing, so that second packing material can be received within the second packing gland and compressed by the split packing compression device where fastener means are provided to selectively urge the packing compressing device into the second housing to provide a seal between the shaft and the second housing and the first housing.
REFERENCES:
patent: 589725 (1897-09-01), Hodge et al.
patent: 947889 (1910-02-01), Dorsey
patent: 1174788 (1916-03-01), Winn
patent: 1776797 (1930-09-01), Sheldon
patent: 1971542 (1934-08-01), Taylor
patent: 3081096 (1963-03-01), Woodbury
patent: 3738666 (1973-06-01), Adams
Steutermann Edward M.
Ward Robert S.
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