Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1978-06-16
1980-03-25
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 45, 277 48, 277105, F16J 1546
Patent
active
041947460
ABSTRACT:
A shaft sealing apparatus for attachment about a rotatable shaft for preventing leakage along the shaft, has a housing with a fixed end plate and a movable gland follower for defining a stuffing box about the shaft. One or more packing assemblies are positioned axially adjacent one another in the stuffing box. Each packing assembly has a compressible packing encircling the shaft, a fluid filled elastomeric compression torus or ring encircling the compressible packing and an axially movable spacer positioned around the shaft adjacent the compressible packing and the compression ring. The spacer may be hollow with an input and exit port for circulating a coolant fluid therethrough. The spacer may also have a radial passageway which is opened to the surface of the shaft whereby lubricant can be applied to the shaft. The gland follower exerts a constant axial force on the packing assemblies.
REFERENCES:
patent: 315350 (1885-04-01), Shook
patent: 2369823 (1945-02-01), Freed
patent: 2822192 (1958-02-01), Beatty
patent: 3226126 (1965-12-01), Plate
patent: 3338583 (1967-08-01), Isdale
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