US3561171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swaging taps with uniform crest width and method of manufacture thereof
Assignee: Balax Inc
•
Filing: 1968-08-14
•
Granted: 1971-02-09
•
Expires: 1988-08-14
Abstract
Abstract SWAGING TAPS WITH TAPERED LEAD SECTIONS SHOULD BE PROVIDED WITH THREAD CREST OF UNIFORM WIDTH THROUGHOUT THE GENERALLY CYLINDRICAL PORTION, THE LEAD PORTION AND THE TRANSITION FROM THE TAPERED PORTION TO THE GENERALLY CYLINDRICAL PORTION OF THE TAP. THE METHOD OF ACHEIVEING CRESTS OF UNIFORM WIDTH INVOLVES THE USE OF A DIFFERENT CAM TO CONTROL THE CRESTING WHEEL FROM THAT USED TO GRIND THE THREADS INITIALLY, THE WORK BEING ROTATED 180* PRELIMINARY TO ENGAGING THE CRESTING WHEEL WITH THE THREADS.
Inventors
- 👤 John M Van Vleet
- 👤 Daniel T Dobrogowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:44
CPC Classifications
B; B23; B23G; B23G7/00; B23G7/02; B24; B24B; B24B19/00; B24B19/02; B24B19/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |