US3280412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for slotting and pointing screws
Assignee: Illinois Tool Works Inc
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Filing: 1963-10-14
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Granted: 1966-10-25
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Walter M Hanneman
- 👤 Rudolph K F Baumle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:05
CPC Classifications
B; B23; B23G; B23G9/00; B23G9/001; B23G9/004; B23G9/002; Y; Y10; Y10T; Y10T408/00; Y10T408/52; Y10T408/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN APPARATUS FOR MAKING SCREWS HAVING A POINTED ENTERING END PORTION AND OPPOSITELY DISPOSED AND INCLINED SLOTS INTERSECTING SAID END PORTION, COMPRISING MEANS FOR CONVEYING SUCCESSIVE BLANKS HAVING EXPOSED SHANKS ALONG A PATH OF TRAVEL, MEANS AT ONE STATION ADJACENT SAID PATH OF TRAVEL FOR MOUNTING SLOT FORMING TOOLS FOR ROTATION ABOUT OPPOSITELY INCLINED AXES AT OPPOSITE SIDES OF SAID PATH OF TRAVEL AND FOR MOVING SAID TOOLS FOR SUBSTANTIALLY SIMULTANEOUSLY FORMING OPPOSITELY INCLINED SLOTS IN A BLANK WITH SAID SLOTS INCLINED AT AN OBLIQUE ANGLE RELATIVE TO A LONGITUDINAL AXIS OF THE BLANK, AND MEANS ADJACENT SAID PATH OF TRAVEL FOR FORMING SAID POINTED END PORTIONS ON SUCCESSIVE BLANKS.
Claim 2
Independent Claim
110 words
AN APPARATUS FOR MAKING SCREWS HAVING A POINTED ENTERING END PORTION AND OPPOSITELY DISPOSED AND INCLINED SLOTS INTERSECTING SAID END PORTION, COMPRISING MEANS FOR CONVEYING SUCCESSIVE BLANKS HAVING EXPOSED SHANKS ALONG A PATH OF TRAVEL, MEANS AT ONE STATION ADJACENT SAID PATH OF TRAVEL FOR MOUNTING SLOT FORMING TOOLS FOR ROTATION ABOUT OPPOSITELY INCLINED AXES AT OPPOSITE SIDES OF SAID PATH OF TRAVEL AND FOR MOVING SAID TOOLS FOR SUBSTANTIALLY SIMULTANEOUSLY FORMING OPPOSITELY INCLINED SLOTS IN A BLANK WITH SAID SLOTS INCLINED AT AN OBLIQUE ANGLE RELATIVE TO A LONGITUDINAL AXIS OF THE BLANK, AND MEANS ADJACENT SAID PATH OF TRAVEL FOR FORMING SAID POINTED END PORTIONS ON SUCCESSIVE BLANKS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |