US3288015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling and thread forming screw
Assignee: Individual
•
Filing: 1965-06-14
•
Granted: 1966-11-29
•
Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Walter M Hanneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:31
CPC Classifications
F; F16; F16B; F16B25/00; F16B25/0036; F16B25/0084; F16B25/10; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/904; Y10T408/9044; Y10T408/9046; Y10T408/90467
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A DRILLING AND THREAD CUTTING SCREW INCLUDING A SHANK, A HEAD AT ONE EXTREMITY THEREOF HAVING MEANS FOR ACCOMMODATING A SCREW-TURNING TOOL, THREAD CONVOLUTIONS ON SAID SHANK PRESENTING A HOLDING SECTION AND AN ENTERING THREAD FORMING SECTION, A CONICAL SURFACE TRANSVERSING THE ENTERING EXTREMITY OF THE SHANK, THE AXIS OF SAID CONICAL SURFACE BEING INCLINED TO THE SHANK AXIS, AND THE APEX THEREOF BEING SUBSTANTIALLY COINCIDENT WITH SAID SHANK AXIS AND PRESENTING AN ENTERING SCREW TIP, THE ENTERING PORTION OF SAID SHANK HAVING A LONGITUDINAL RECESS, A LEADING CUTTING EDGE, AND A NON-CUTTING TRAILING EDGE CIRCUMFERENTIALLY SPACED THEREFROM, SAID EDGES BEING DEFINED BY THE INTERSECTION OF SAID RECESS WITH SAID CONICAL SURFACE, SAID
Claim 2
Dependent Claim
113 words
A DRILLING AND THREAD CUTTING SCREW INCLUDING A SHANK, A HEAD AT ONE EXTREMITY THEREOF HAVING MEANS FOR ACCOMMODATING A SCREW-TURNING TOOL, THREAD CONVOLUTIONS ON SAID SHANK PRESENTING A HOLDING SECTION AND AN ENTERING THREAD FORMING SECTION, A CONICAL SURFACE TRANSVERSING THE ENTERING EXTREMITY OF THE SHANK, THE AXIS OF SAID CONICAL SURFACE BEING INCLINED TO THE SHANK AXIS, AND THE APEX THEREOF BEING SUBSTANTIALLY COINCIDENT WITH SAID SHANK AXIS AND PRESENTING AN ENTERING SCREW TIP, THE ENTERING PORTION OF SAID SHANK HAVING A LONGITUDINAL RECESS, A LEADING CUTTING EDGE, AND A NON-CUTTING TRAILING EDGE CIRCUMFERENTIALLY SPACED THEREFROM, SAID EDGES BEING DEFINED BY THE INTERSECTION OF SAID RECESS WITH SAID CONICAL SURFACE, SAID
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |