Patent US3585701A successfully refreshed from Google Patents.
US3585701A
Expired / Lapsed
US
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Apparatus for expanding tubes
Assignee: Individual
•
Filing: 1969-01-27
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Granted: 1971-06-22
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Expires: 1989-01-27
Abstract
Abstract THIS INVENTION PROVIDES APPARATUS TO ASCERTAIN THAT THE SELECTED DEGREE OF INTERFERENCE FIT IS BEING PRODUCED AS EACH END PORTION OF EACH TUBE IS EXPANDED INTO ITS TUBEHOLE IN ITS MATING TUBE-SHEET. THE APPARATUS SENSES AND CHECKS THE WORK-PRODUCING FORCE AT SELECTED MOMENTS DURING EACH WORK CYCLE, AND IF ANY FORCE CHECKED IS NOT THE PROPER MAGNITUDE SAID APPARATUS INDICATES A DEFECTIVE WORK-CYCLE HAS BEEN PRODUCED.
Inventors
- 👤 Walter E Stary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:48
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/08; B21D39/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49375; Y10T29/53; Y10T29/53026; Y10T29/53039; Y10T29/53057; Y10T29/53061; Y10T29/53065; Y10T29/53087; Y10T29/53113; Y10T29/53122; Y10T29/53709; Y10T29/53987
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |