Patent US3389417A successfully refreshed from Google Patents.
US3389417A
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Assignee: Individual
•
Filing: 1966-10-07
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Granted: 1968-06-25
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Expires: 1986-10-07
Abstract
No abstract record available.
Inventors
- 👤 Mary M Knapp
- 👤 Harry J Girard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:26
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0553; F; F16; F16L; F16L2101/00; F16L2101/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A PIPELINE SWIPE ADAPTED TO BE PROPELLED THROUGH A PIPE BY A PRESSURE GRADIENT A CYLINDRICAL BODY FORMED OF RESILIENT MATERIAL, AND A COVERING FOR SAID BODY HAVING PORTIONS EXTENDING CONTINUOUSLY ABOUT THE PERIPHERY OF THE BODY TO FORM A SEAL BETWEEN THE BODY AND THE SURROUNDING WALL OF A PIPE, SAID COVERING HAVING SPACED APART OPENINGS THROUGH WHICH THE BODY MAY EXPAND INTO CONTACT WITH THE PIPE UPON LONGITUDINAL COMPRESSION OF THE BODY.
Claim 2
Dependent Claim
75 words
IN A PIPELINE SWIPE ADAPTED TO BE PROPELLED THROUGH A PIPE BY A PRESSURE GRADIENT A CYLINDRICAL BODY FORMED OF RESILIENT MATERIAL, AND A COVERING FOR SAID BODY HAVING PORTIONS EXTENDING CONTINUOUSLY ABOUT THE PERIPHERY OF THE BODY TO FORM A SEAL BETWEEN THE BODY AND THE SURROUNDING WALL OF A PIPE, SAID COVERING HAVING SPACED APART OPENINGS THROUGH WHICH THE BODY MAY EXPAND INTO CONTACT WITH THE PIPE UPON LONGITUDINAL COMPRESSION OF THE BODY.
References Cited (Backward Citations)
US3204274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |