Safety rotary transmission with face seal

Details Safety rotary transmission with face seal Safety rotary transmission with face seal

1987-06-09

1988-11-22

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 91, 277 93SD, 277 94, F16J 1534

Patent

active

047860618

ABSTRACT:
Safety rotary transmissions allow the transfer of fluid media from a stationary casing into the inside of a rotating shaft and back. The apparatus, which has only one face seal, is provided with a blocking device which prevents a contact of metallic parts of the face seal with one another even if there is severe wear of the sliding sealing ring. An exchange of the sealing ring is possible without dismantling the casing.

REFERENCES:
patent: 1528334 (1925-03-01), Hurd
patent: 2818285 (1957-12-01), Greiner
patent: 2992842 (1961-07-01), Shevchenko et al.
patent: 3033579 (1962-05-01), Seaver
patent: 3080170 (1963-03-01), Colby

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