Dynamic pressure bearing device

Details Dynamic pressure bearing device Dynamic pressure bearing device

1990-11-07

1991-09-10

Footland, Lenard A.

Bearings

Rotary bearing

Fluid bearing

384115, 384126, 384292, F16C 2100

Patent

active

050468634

ABSTRACT:
A dynamic pressure bearing device induced a housing having a sleeve and a thrust receiver and a shaft fit into the sleeve. Herringbone-shaped grooves for generating dynamic pressure comprising outer groove segments and inner group segments are disposed to at least one of the inner cylindrical surface of the sleeve and the outer cylindrical surface of the shaft at two axially spaced apart positions. The axial length of the outer groove segment is longer than that of the inner groove segment, and the difference of the axial length for the outer and the inner groove segments is greater in the lower herringbone-shaped grooves than in the upper herringbone-shaped grooves.

REFERENCES:
patent: 1321478 (1919-11-01), Russler
patent: 4523800 (1985-06-01), Yamashita et al.
patent: 4596474 (1986-06-01), Van Roemburg
patent: 4797009 (1989-01-01), Yamazaki
patent: 4856918 (1989-09-01), Inoue et al.

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