US3349651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for piercing and threading a workpiece
Assignee: GKN Screws and Fasteners Ltd
•
Filing: 1965-09-20
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Granted: 1967-10-31
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Expires: 1985-09-20
Abstract
No abstract record available.
Inventors
- 👤 John H Turnbull
- 👤 Alexander B Watt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:47
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/02; B25B21/023; B25B21/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A TOOL FOR APPLYING SELF-TAPPING SCREWS TO A WORKPIECE, COMPRISING A BODY, A SCREW-DRIVER BIT ROTATABLY AND SLIDABLY MOUNTED IN SAID BODY, AN ELECTRIC MOTOR WITHIN THE BODY FOR ROTATING SAID BIT, AN IMPACT MEMBER SLIDABLY MOUNTED WITHIN SAID BODY, AND MEANS OPERATED BY SAID ELECTRIC MOTOR FOR DRIVING SAID IMPACT MEMBER INTO ENGAGEMENT WITH SAID SCREW-DRIVER BIT TO DELIVER AN IMPACT CAUSING THE SCREW-DRIVER BIT TO SLIDE IN THE BODY.
Claim 2
Dependent Claim
71 words
A TOOL FOR APPLYING SELF-TAPPING SCREWS TO A WORKPIECE, COMPRISING A BODY, A SCREW-DRIVER BIT ROTATABLY AND SLIDABLY MOUNTED IN SAID BODY, AN ELECTRIC MOTOR WITHIN THE BODY FOR ROTATING SAID BIT, AN IMPACT MEMBER SLIDABLY MOUNTED WITHIN SAID BODY, AND MEANS OPERATED BY SAID ELECTRIC MOTOR FOR DRIVING SAID IMPACT MEMBER INTO ENGAGEMENT WITH SAID SCREW-DRIVER BIT TO DELIVER AN IMPACT CAUSING THE SCREW-DRIVER BIT TO SLIDE IN THE BODY.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |