Baffled centrifugal lubrication spacer

Details Baffled centrifugal lubrication spacer Baffled centrifugal lubrication spacer

2005-02-15

2005-02-15

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Antifriction bearing

C384S465000, C384S466000

Reexamination Certificate

active

06854892

ABSTRACT:
The present invention relates to a spacer arrangement used in a duplex bearing system. The spacer arrangement has a lubricant chamber, a first spacer element within the lubricant chamber having a centrifugal ramp, and a second spacer element within the lubricant chamber having a baffle. The baffle divides the lubricant chamber into first and second chambers with each chamber communicating with one of the bearings in the duplex bearing system. The centrifugal ramp counteracts the effects of gravity and uses centrifugal forces to insure a supply of lubricant to one of the bearings, typically an upper bearing, in the duplex bearing system. The spacer arrangement has particular utility in a swashplate assembly used in helicopters, which swashplate assembly includes a stationary swashplate and a rotating swashplate with the duplex bearing arrangement being located between the two swashplates.

REFERENCES:
patent: 1378658 (1921-05-01), Clement et al.
patent: 2272757 (1942-02-01), Tcker
patent: 3759592 (1973-09-01), Carlson
patent: 4006944 (1977-02-01), Ando et al.
patent: 5102240 (1992-04-01), Oehy et al.
patent: 5735676 (1998-04-01), Loos
patent: 5803616 (1998-09-01), Persson et al.

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