Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal for a pipe – conduit – or cable
Reexamination Certificate
2005-03-22
2005-03-22
Stodola, Daniel P. (Department: 3676)
Seal for a joint or juncture
Seal between fixed parts or static contact against...
Contact seal for a pipe, conduit, or cable
C277S616000, C277S626000, C277S639000, C285S368000, C403S337000
Reexamination Certificate
active
06869081
ABSTRACT:
A gasket system for sealed interfaces utilizes a carrier ring having inner and outer compression stops to account for and control flange rotation effects in order to achieve a uniform and constant gasket seating stress across the sealing region. The inner compression stop provides a fixed fulcrum for flange rotation. The inner and outer compression stops have different heights, dependent upon the characteristic flange rotation, that allow the orientation of the sealing material to be angularly matched to the flange side profile and that allow the sealing material to be fully captured within the sealing region upon full compression, minimizing creep relaxation. A visual compression indicator on the circumference of the carrier ring permits assembly of the interface without the use of specialized or calibrated tools.
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An American National Standard “Metallic Gaskets for Pipe Flanges—Ring-Joint, Spiral-Wound, and Jacketed” ASME B16.20-1993 (Revision of ANSI B16.20-1973), The American Society of Mechanical Engineers, New York, NY.
Boswell Christopher J.
Jjenco, Inc.
Stodola Daniel P.
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