Scroll thrust bearing

Details Scroll thrust bearing Scroll thrust bearing

2005-08-02

2005-08-02

Joyce, William C. (Department: 3682)

Bearings

Rotary bearing

Antifriction bearing

C384S619000, C074S086000, C418S055100

Reexamination Certificate

active

06923577

ABSTRACT:
A scroll thrust bearing having both-end conical rollers are rolling elements, being low in cost, high in precision, large in load capacity, and excellent in durability. A plurality of both-end conical rollers are held rotatably between a pair of bearing plates, and the relation of the scroll swirl radius (R) of both-end conical roller and the dimension (H) between opposite tracks of the both bearing plates is set in a range of 1<H/R<5. As compared with the preset scroll swirl radius (R) of both-end conical roller, the section curvature in the contact portion with the tracks of the both bearing plates of the conical surfaces of the both-end conical roller is kept as small as possible in a practical range, so that the surface pressure acting on the conical surfaces of the both-end conical roller is kept as small as possible.

REFERENCES:
patent: 419089 (1890-01-01), Wagner
patent: 3740108 (1973-06-01), Fernlund
patent: 4715733 (1987-12-01), Rood
patent: 5752775 (1998-05-01), Tsutsui et al.
patent: 5846000 (1998-12-01), Tanishiki
patent: 6123605 (2000-09-01), Yano
patent: 6152712 (2000-11-01), Ueda
patent: 2001-82489 (2001-03-01), None

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