Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1983-06-21
1985-06-18
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 27, 277 74, 277 75, 277 72FM, 277 961, F16J 1538, F16J 1540, F16J 1548
Patent
active
045237646
ABSTRACT:
A fluid sealed shaft seal has a radial sealing gap formed between radial surfaces of a first seal ring rotating with a shaft, and a second stationary seal ring biased toward the first ring and connected over a packing element to a housing. The stationary seal ring carries at least one sealing fluid supply bore and at least one sealing fluid discharge bore for supplying and discharging sealing fluid to and from the gap, to maintain a gap width. Spiral grooves are provided radially outwardly or radially inwardly of the supply and discharge bores for supplying an auxiliary sealing fluid to establish a high pressure annular area to prevent escape of the sealing fluid from the gap.
REFERENCES:
patent: 2895751 (1959-07-01), Standish
patent: 3109658 (1963-11-01), Barrett et al.
patent: 3527465 (1970-09-01), Guinard
patent: 3804424 (1974-04-01), Gardner
Albers Rolf
Aschenbruck Emil
Kotzur Joachim
Neuhaus Gunter
M.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft
Ward Robert S.
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