Rotary, flat metallic fluid-tight and thrust-resisting seal and

Details Rotary, flat metallic fluid-tight and thrust-resisting seal and Rotary, flat metallic fluid-tight and thrust-resisting seal and

1987-03-26

1988-02-02

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 961, 277134, 51281SF, F16J 1534, B24B 2302

Patent

active

047225335

ABSTRACT:
In the process for the machining of a rotary flat fluid-tight seal by grinding, the working surface of the grinding wheel has imparted to it an inclination with respect to the annular surface of the seal, in such a manner as to leave behind on the said surface of the seal traces which are termed "in half-sun" at the intersection of the grinding wheel and of the seal along a chord. The inclination is provided by modifying the height of one of two headstocks of a grinding machine and by pivoting the table of the grinding machine in a horizontal plane. The fluid-tight seal thus produced provides a leakage flow of lubricating fluid and thus can be used as an axial thrust seal and bearing of a rotary shaft, especially for pumps.

REFERENCES:
patent: 2136036 (1938-11-01), Avery
patent: 2367850 (1945-01-01), Dusevoir
patent: 3744805 (1973-07-01), Heinrich
patent: 3796466 (1974-03-01), Lasch
patent: 4361988 (1982-12-01), Gramlich
patent: 4420162 (1983-12-01), Yanai et al.
patent: 4444399 (1984-04-01), Yanai et al.
patent: 4525957 (1985-07-01), Daniels

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