Mechanical seal device

Details Mechanical seal device Mechanical seal device

2006-02-28

2006-02-28

Glessner, Brian E. (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Diverse and distinct dynamic seals

C277S390000, C277S408000

Reexamination Certificate

active

07004473

ABSTRACT:
A primary object of the present invention is to achieve a high sealing performance, to collect hazardous gas contained in a sealed process fluid, and to realize an easy disposition of a mechanical seal device. A typical configuration is that the end face of a shaft sleeve engages a rotary shaft by a step shoulder of the shaft which is disposed in the sealed fluid side relative to the stationary seal ring, and that the inner diameter of the end face is set larger than the inner diameter of the sealed fluid pressure surface on the back face of the stationary seal ring. This construction makes it easy to dispose a mechanical seal device and with this mechanical seal device, the sealed process fluid is securely sealed.

REFERENCES:
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patent: 5249812 (1993-10-01), Volden et al.
patent: 5324048 (1994-06-01), Carmody
patent: 5435574 (1995-07-01), Victor et al.
patent: 5863047 (1999-01-01), Ellis
patent: 6293555 (2001-09-01), Sedy
patent: 6425583 (2002-07-01), Muraki
patent: 6517078 (2003-02-01), Schruefer et al.
patent: 6601854 (2003-08-01), Auber

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