Center bearing assembly with rheological fluid for damping vibra

Details Center bearing assembly with rheological fluid for damping vibra Center bearing assembly with rheological fluid for damping vibra

1997-03-21

1998-03-24

Footland, Lenard A.

Bearings

Rotary bearing

Hydraulic or pneumatic bearing support

384446, 384544, F16C 2704

Patent

active

057305315

ABSTRACT:
An apparatus (10) includes a vehicle drive shaft (12), a roller bearing (16) supporting the drive shaft (12) for rotation, and a housing (18) which contains and supports the roller bearing (16) in a vehicle. The roller bearing (16) includes an inner race (34) rotatable within an outer race (36). The apparatus (10) further includes a damper assembly (20) which damps vibrations radially between the roller bearing (16) and the housing (18). The damper assembly (20) defines a closed chamber (150) containing rheological fluid (152), and has a flow-inducing part (80) projecting into the fluid (152). The flow-inducing part (80) of the damper assembly (20) is movable radially within the fluid (152) in response to radial vibrations of the outer bearing race (36).

REFERENCES:
patent: 4200003 (1980-04-01), Miller
patent: 4337982 (1982-07-01), Moringiello et al.
patent: 4392694 (1983-07-01), Reynolds
patent: 4867655 (1989-09-01), Barbic et al.
patent: 4921229 (1990-05-01), Hori
patent: 5029677 (1991-07-01), Mitsui
patent: 5354488 (1994-10-01), Shtarkman et al.
patent: 5452957 (1995-09-01), Duggan
Universal Joint and Driveshaft Design Manual, Advances in Engineering Series, No. 7, Chapter 6, Shaft Support Bearings, pp. 201-206, The Society of Automotive Engineers, Inc., 400 Commonwealth Ave., Warrendale, PA 15096 (date unknown).

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