Self-locking seal ring

Details Self-locking seal ring Self-locking seal ring

2007-01-23

2007-01-23

Engle, Patricia (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Piston ring or piston ring expander or seat therefor

Reexamination Certificate

active

10977371

ABSTRACT:
A self-locking seal ring is disclosed. The self-locking seal ring includes a ring body having a tab end segment on one end and a channel end segment on the opposite end. A lock tab is provided on the tab end segment, and a lock channel is provided on the channel end segment for receiving the lock tab. The self-locking seal ring is easy to install in a ring groove in a main butterfly plate of a butterfly valve, for example, and facilitates optimum sealing of the main butterfly plate with respect to the butterfly valve housing.

REFERENCES:
patent: 1271077 (1918-07-01), Probasco
patent: 2485862 (1949-10-01), Caza
patent: 4533149 (1985-08-01), Vater et al.
patent: 4844487 (1989-07-01), Eakin
patent: 5513857 (1996-05-01), Watanabe et al.

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