Patent US2752579A successfully refreshed from Google Patents.
US2752579A
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US
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Pipe union with insulated contact plate
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-03-30
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Granted: 1956-06-26
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Expires: 1973-03-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Caldwell
- 👤 Patrick H Monaghan
- 👤 Robert C Rumble
- 👤 Leo V Uhrig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:48
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/02; F16L25/023; F16L25/026; Y; Y10; Y10S; Y10S277/00; Y10S277/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A PIPE UNION COMPRISED OF A FIRST METALLIC MEMBER ADAPTED TO BE CONNECTED RIGIDLY TO A PIPE HAVING A SEATING FACE ON AN END OPPOSITE A PIPE CONNECTING END, A SECOND METALLIC MEMBER ADAPTED TO BE CONNECTED RIGIDLY TO A PIPE HAVING A SEATING FACE ON AN END OPPOSITE A PIPE CONNECTING END, A METALLIC ANNULAR PLATE ARRANGED BETWEEN SAID FACES, FIRST AND SECOND ANNULAR ELECTRICAL INSULATING MEANS ARRANGED BETWEEN OUTER SURFACES OF SAID PLATE AND EACH OF SAID FACES, SAID PLATE PRESENTING AT LEAST ONE ELECTRICALLY EXPOSED SURFACE, A COUPLING MEMBER SURROUNDING A FIRST OF SAID MEMBERS AND ENGAGEABLE WITH A SECOND OF SAID MEMBERS TO HOLD SAID MEMBERS IN COUPLING RELATIONSHIP, SAID COUPLING MEMBER BEING PROVIDED WITH ELECTRICAL INSULATING MEANS INSULATING ELECTRICALLY SAID COUPLING MEMBER FROM SAID FIRST MEMBER AND SAID COUPLING MEMBER ALSO BEING PROVIDED WITH A PASSAGEWAY COMMUNICATING AN EXTERIOR OF SAID COUPLING MEMBER WITH SAID EXPOSED SURFACE OF SAID PLATE.
Claim 2
Dependent Claim
155 words
A PIPE UNION COMPRISED OF A FIRST METALLIC MEMBER ADAPTED TO BE CONNECTED RIGIDLY TO A PIPE HAVING A SEATING FACE ON AN END OPPOSITE A PIPE CONNECTING END, A SECOND METALLIC MEMBER ADAPTED TO BE CONNECTED RIGIDLY TO A PIPE HAVING A SEATING FACE ON AN END OPPOSITE A PIPE CONNECTING END, A METALLIC ANNULAR PLATE ARRANGED BETWEEN SAID FACES, FIRST AND SECOND ANNULAR ELECTRICAL INSULATING MEANS ARRANGED BETWEEN OUTER SURFACES OF SAID PLATE AND EACH OF SAID FACES, SAID PLATE PRESENTING AT LEAST ONE ELECTRICALLY EXPOSED SURFACE, A COUPLING MEMBER SURROUNDING A FIRST OF SAID MEMBERS AND ENGAGEABLE WITH A SECOND OF SAID MEMBERS TO HOLD SAID MEMBERS IN COUPLING RELATIONSHIP, SAID COUPLING MEMBER BEING PROVIDED WITH ELECTRICAL INSULATING MEANS INSULATING ELECTRICALLY SAID COUPLING MEMBER FROM SAID FIRST MEMBER AND SAID COUPLING MEMBER ALSO BEING PROVIDED WITH A PASSAGEWAY COMMUNICATING AN EXTERIOR OF SAID COUPLING MEMBER WITH SAID EXPOSED SURFACE OF SAID PLATE.
References Cited (Backward Citations)
US323731A
Cited
US397218A
Cited
CH89677A
Cited
US1491032A
Cited
US1656912A
Cited
US2234441A
Cited
US2407076A
Cited
US2627580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |