Expandable seal assembly apparatus and method

Details Expandable seal assembly apparatus and method Expandable seal assembly apparatus and method

2005-01-25

2005-01-25

Hylton, Robin A. (Department: 3727)

Receptacles

Closures

Externally adjustable plug or gasket

C220S239000, C220S233000, C277S646000

Reexamination Certificate

active

06845876

ABSTRACT:
The expandable seal assembly can be used to seal the contents of a container. When air pressure is applied to a chamber, rods with leaf springs on a distal end extend outward mating an expandable elastic to the inside edge of the container to be sealed. A spring-mounted ball valve maintains the pressure in the chamber when the source of the air pressure applied to the chamber is removed.

REFERENCES:
patent: 3606070 (1971-09-01), Shepherd
patent: 3820682 (1974-06-01), Davella
patent: 3896663 (1975-07-01), Ogura
patent: 4763511 (1988-08-01), Mathison et al.
patent: 4991651 (1991-02-01), Campbell
patent: 6286553 (2001-09-01), Morgan

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