Patent US3557434A successfully refreshed from Google Patents.
US3557434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for attaching an end fitting
Assignee: COOP IND Inc
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Filing: 1968-09-26
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Granted: 1971-01-26
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Expires: 1988-09-26
Abstract
Abstract A COMBINATION TOOL WITH A HANDLE HAVING A HELICALLY THREADED END FOR INSTALLING A METAL SLEEVE WITHIN THE END OF A LENGTH OF CONVOLUTED PLASTIC CONDUIT CARRIES AN EXTENDIBLE THREADED STEM. WHEN THE STEM IS EXTENDED AND A COMBINATION BEARING AND ANVIL MEMBER IS INSTALLED THEREON, AN EXPANDING BULLET CAN BE CAUSED TO APPROACH THE COMBINATION MEMBER FORCING ITS WAY THROUGH THE BORE OF AN INTERVENING END FITTING MEMBER FOR EXPANDING THE LATTER. IN ONE EMBODIMENT THE BULLET IS THREADED ON THE STEM, WHILE IN ANOTHER, THE BULLET IS INTEGRAL WITH THE STEM WHICH IS THREADED INTO THE HANDLE.
Inventors
- 👤 Richard J Delahunty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:10
CPC Classifications
F; F16; F16L; F16L33/00; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5367
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |