Patent US3198557A successfully refreshed from Google Patents.
US3198557A
Expired / Lapsed
US
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Flexible joint
Assignee: DREW ENGINEERING Co
•
Filing: 1962-02-09
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Granted: 1965-08-03
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Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 Robert C Portouw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:11
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/10; F16B; F16B2200/00; F16B2200/50; Y; Y10; Y10T; Y10T403/00; Y10T403/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A JOINT CONNECTING TWO CONDUITS COMPRISING A FIRST CONDUIT PORTION WITH FOUR SIDES AND OF RECTANGULAR OUTLINE INTEGRAL WITH ONE OF SAID CONDUITS, ANOTHER CONDUIT PORTION WITH FOUR SIDES INTEGRAL WITH THE OTHER OF SAID CONDUITS SUBSTANTIALLY CONCENTRICALLY POSITIONED WITH RESPECT TO SAID FIRST CONDUIT PORTION, FLANGE MEANS EXTENDING ABOUT ONE OF SAID CONDUIT PORTIONS INCLUDING FOR EACH SIDE OF THE OTHER CONDUIT PORTION AN ADJACENT ELONGATED SURFACE PORTION SET AT AN ANGLE WITH RESPECT TO THE SIDE BUT EXTENDING IN A REACH PARALLELING THE SIDE, A SEALING ELEMENT INTERPOSED BETWEEN EACH SIDE OF SAID FIRST CONDUIT PORTION AND ITS ADJACENT SURFACE PORTION OF SAID FLANGE MEANS HAVING A FIRST ELONGATED SEALING SURFACE ENGAGING THE SIDE OF THE FIRST CONDUIT PORTION AND A SECOND ELONGATED SEALING SURFACE ENGAGING THE ADJACENT SURFACE PORTION OF SAID FLANGE MEANS, AND MEANS RESILIENTLY HOLDING EACH OF SAID SEALING ELEMENTS IN PLACE.
Claim 2
Dependent Claim
147 words
A JOINT CONNECTING TWO CONDUITS COMPRISING A FIRST CONDUIT PORTION WITH FOUR SIDES AND OF RECTANGULAR OUTLINE INTEGRAL WITH ONE OF SAID CONDUITS, ANOTHER CONDUIT PORTION WITH FOUR SIDES INTEGRAL WITH THE OTHER OF SAID CONDUITS SUBSTANTIALLY CONCENTRICALLY POSITIONED WITH RESPECT TO SAID FIRST CONDUIT PORTION, FLANGE MEANS EXTENDING ABOUT ONE OF SAID CONDUIT PORTIONS INCLUDING FOR EACH SIDE OF THE OTHER CONDUIT PORTION AN ADJACENT ELONGATED SURFACE PORTION SET AT AN ANGLE WITH RESPECT TO THE SIDE BUT EXTENDING IN A REACH PARALLELING THE SIDE, A SEALING ELEMENT INTERPOSED BETWEEN EACH SIDE OF SAID FIRST CONDUIT PORTION AND ITS ADJACENT SURFACE PORTION OF SAID FLANGE MEANS HAVING A FIRST ELONGATED SEALING SURFACE ENGAGING THE SIDE OF THE FIRST CONDUIT PORTION AND A SECOND ELONGATED SEALING SURFACE ENGAGING THE ADJACENT SURFACE PORTION OF SAID FLANGE MEANS, AND MEANS RESILIENTLY HOLDING EACH OF SAID SEALING ELEMENTS IN PLACE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |