Title: Sealing apparatus

Abstract: Sealing apparatus used for sealing the gap between flanges which comprises an O-ring engaged with a circular groove formed in the coupling surface of one of the flanges and two backup rings engaged with the groove and the O-ring, each of the backup rings having an inclined surface to be axially urged by the O-ring whereby the upper backup ring is moved according to the gap to close it.

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Other info:

Inventors: Okada, Masashi (Okayama, JA)
Aoki, Takeshi (Okayama, JA)

Application Number: 633212
Filing Date: 1975-11-19
Publication_date: 1977-07-12
Assignee: Mitsui Shipbuilding and Engineering Co., Ltd. (Tokyo, JA)
Primary Class(es): 277/611 285/113
Other Classes:
US Patent Ref:

2614793	Oct, 1952	Storm	277/177.
3329447	Jul, 1967	Hitz	285/113.
3716245	Feb, 1973	Turolla	277/70.
3833227	Sep, 1974	Nillson	277/176.
3927891	Dec, 1975	Larker et al.	277/70.

Other Refs:
Primary Examiner: Smith, Robert I.
Assistant Examiner:
Attorney: Howson and Howson