US3120700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube puller
Assignee: United States Steel Corp
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Filing: 1961-01-24
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Granted: 1964-02-11
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Expires: 1981-01-24
Abstract
No abstract record available.
Inventors
- 👤 Jr George A Chuplis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/023; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53113; Y10T29/53687; Y10T29/53796; Y10T29/53848; Y10T29/53857; Y10T29/53878; Y10T29/53883; Y10T29/53909; Y10T29/53943; Y10T29/53952; Y10T29/53957; Y10T29/53987
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
APPARATUS FOR PULLING AN UNTHREADED TUBE FROM THE TUBE SHEET OF A HEAT EXCHANGER WHICH COMPRISES AN ELONGATED MAIN BODY HAVING AN INTERNALLY THREADED AXIAL BORE THERETHROUGH, THE DIAMETER OF SAID BORE BEING GREATER THAN THE OUTSIDE DIAMETER OF SAID TUBE, AN ELONGATED STUD HAVING AN EXTERNALLY THREADED PORTION INTERMEDIATE ITS ENDS THREADINGLY DISPOSED IN SAID BORE FOR RELATIVE AXIAL MOVEMENT THEREIN, SAID STUD HAVING A THREADING TAP OF REDUCED DIAMETER ADJACENT ONE END ADAPTED TO BE INSERTED IN SAID TUBE TO TAP THE SAME, THE END OF SAID STUD REMOTE
Claim 2
Dependent Claim
91 words
APPARATUS FOR PULLING AN UNTHREADED TUBE FROM THE TUBE SHEET OF A HEAT EXCHANGER WHICH COMPRISES AN ELONGATED MAIN BODY HAVING AN INTERNALLY THREADED AXIAL BORE THERETHROUGH, THE DIAMETER OF SAID BORE BEING GREATER THAN THE OUTSIDE DIAMETER OF SAID TUBE, AN ELONGATED STUD HAVING AN EXTERNALLY THREADED PORTION INTERMEDIATE ITS ENDS THREADINGLY DISPOSED IN SAID BORE FOR RELATIVE AXIAL MOVEMENT THEREIN, SAID STUD HAVING A THREADING TAP OF REDUCED DIAMETER ADJACENT ONE END ADAPTED TO BE INSERTED IN SAID TUBE TO TAP THE SAME, THE END OF SAID STUD REMOTE
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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |