Patent ID: 9574621
Date: 2017-02-21
CPC Classifications: F16D

Claim:
1. A clutch assembly, comprising: a cover adapted for connecting to a driving member extending along a central axis and having a threaded inwardly facing surface; an adjusting ring having a threaded outwardly facing surface threadably received in the inwardly facing surface of the cover for selective rotation with respect to the cover about the central axis to change a relative axial position of the adjusting ring relative to the cover; a pressure plate coaxially mounted on the cover for axial movement relative to the cover; a friction disc adapted for connection to a driven member coaxially mounted on the cover adjacent the pressure plate; a lever reacting against the adjusting ring to move the pressure plate into and out of engagement with the friction disc; and an elastically compressible seal assembly centered on the central axis and extending between an axially facing surface of the cover and an axially facing surface of the adjusting ring opposing said axially facing surface of the cover to prevent contamination from passing the seal assembly and accumulating on the threaded inwardly facing surface of the cover.