Bellows type mechanical seal

Details Bellows type mechanical seal Bellows type mechanical seal

2005-11-08

2005-11-08

Hutton, Doug (Department: 2179)

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

C277S404000

Reexamination Certificate

active

06962339

ABSTRACT:
A sealing system for sealing one end of a rotating shaft from fluids. The sealing system includes a resilient bellows element connected at each end to a thrust plate. The bellows acts like a compression spring forcing the thrust plates against respective sealing elements and thereby forming two dynamic seals around the shaft. Each of the dynamic seals alternately rotate with the shaft, depending upon the respective forces of friction acting on each.

REFERENCES:
patent: 2464136 (1949-03-01), Jenkins
patent: 3028163 (1962-04-01), Heinrich
patent: 3218086 (1965-11-01), Donley
patent: 3391941 (1968-07-01), Donley
patent: 3492008 (1970-01-01), Donley
patent: 3507504 (1970-04-01), Donley
patent: 3560004 (1971-02-01), Donley et al.
patent: 3601413 (1971-08-01), Darnell
patent: 4819948 (1989-04-01), Merrifield
patent: 4936593 (1990-06-01), Finney
patent: 5435574 (1995-07-01), Victor et al.

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