Pivot assembly

Details Pivot assembly Pivot assembly

1987-12-21

1988-09-20

Kundrat, Andrew V.

Joints and connections

Articulated members

Pivoted

403227, 180 95, F16C 1106

Patent

active

047721510

ABSTRACT:
A pivot assembly provides limited pivotal motion between a relatively stationary member and a relatively moveable member which is supported on the stationary member. The stationary member is secured to a vehicle frame and the moveable member forms a portion of an endless track supporting frame. The pivot assembly includes a plurality of elastomeric bearings between the stationary and moveable members and a loading member to compress and preload the bearings. Conventional pivot assemblies utilize metal sleeve, roller or ball bearings to provide relative pivotal motion between stationary and cooperative moveable members. Such metal bearings require constant lubrication, and seals to contain the lubrication, and produce objectionable noise and vibration. The subject pivot assembly requires no lubrication or seals and generates low levels of noise and vibration by isolating the stationary and moveable members with the elastomeric bearings. The dual tapered, elastomeric preloaded bearings restrain and capture the relatively moveable member axially and radially without a thrust bearing.

REFERENCES:
patent: 2346574 (1944-04-01), Guy
patent: 2845310 (1958-07-01), Butkus
patent: 2935347 (1960-05-01), Liversage
patent: 2937040 (1960-05-01), Hutton
patent: 3989126 (1976-11-01), Katzer
patent: 4133401 (1979-01-01), Allen et al.
patent: 4141423 (1979-02-01), Cline et al.
patent: 4150468 (1979-04-01), Harbottle
patent: 4175806 (1979-11-01), Taylor

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