Sheave block and seal assembly therefor

Details Sheave block and seal assembly therefor Sheave block and seal assembly therefor

F - Mech Eng,Light,Heat,Weapons

16

J

277/38

F16J 15/32 (2006.01) B66D 3/06 (2006.01) F16C 33/74 (2006.01) F16J 15/54 (2006.01)

Patent

CA 1123866

-7- Sheave Block and Seal Assembly Therefor Abstract A seal assembly and a sheave block utilizing said assembly in which a housing mounts a central shaft on which a plurality of sheaves are rotatably mounted. A free-floating spacer ring is positioned on the central shaft between each of the sheaves and between a sheave and the housing and has a hard wearing smooth surface as provided by chrome-plating, and a pair of lip seals of elastic material are positionable, one on each face of a sheave and an adjacent-surface of the housing, with each having a part thereof defining a hard wearing low friction bearing surface for sealing engagement with the surface of the spacer ring.

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