Anti-leakage device

Details Anti-leakage device Anti-leakage device

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/54 (2006.01) F16J 15/32 (2006.01) F16J 15/40 (2006.01)

Patent

CA 2170792

In a machine in which a rotating shaft extends into a housing through a gland, the shaft being rotated in only one direction, the housing containing lubricant, the gland including an opening of substantial length with an annular radially inwardly extending flange at an axially inner end, an anti-leakage device comprises a sleeve mounted on and around the shaft closely but to permit rotation of the shaft, and mounted against rotation in the gland opening. The sleeve has an annular seat, in which an O-ring is mounted, and a helical groove in a surface contiguous the shaft, the groove being formed in a direction with respect to the direction of rotation of the shaft to move fluid in a direction toward the housing. The clearances between the shaft and housing when the shaft is not rotating are such as to prevent the lubricant in the housing from leaking out.

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