US3081472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic injector for pipe line cleaners
Assignee: Robin Nodwell Manufacturing Ltd
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Filing: 1961-03-02
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Granted: 1963-03-19
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Expires: 1981-03-02
Abstract
No abstract record available.
Inventors
- 👤 Willem L M Van Dijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:13
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/26; F16L55/46; B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; Y; Y10; Y10T; Y10T137/00; Y10T137/4891
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
APPARATUS FOR FEEDING PIPE SCRAPERS INTO A PIPE LINE COMPRISING A CYLINDRICAL SECTION ADAPTED FOR INTERPOSITION IN A PIPE LINE TO BE CLEANED, A MAGAZINE FOR SCRAPERS, A TOOTHED FEED WHEEL PITCHED TO CORRESPOND WITH THE SCRAPERS AND SITUATED TO FEED SCRAPERS FROM SAID MAGAZINE TO SAID CYLINDRICAL SECTION, MEANS FOR URGING THE SCRAPERS IN SAID MAGAZINE TANGENTIALLY TOWARD SAID FEED WHEEL TO ENGAGE THE TEETH THEREOF WITH SUFFICIENT FORCE TO ROTATE THE FEED WHEEL, A GEAR TRAIN ARRANGED TO CONTROL THE ROTATION OF THE FEED WHEEL, A TRIP LEVER, SAID GEAR TRAIN BEING CONTROLLED BY SAID TRIP LEVER, AND A DRIVEN NOTCHED WHEEL ADAPTED TO TRIP SAID LEVER AT PREDETERMINED INTERVALS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |