Patent US3869741A successfully refreshed from Google Patents.
US3869741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination threading and screw driver tool
Assignee: Individual
•
Filing: 1973-06-08
•
Granted: 1975-03-11
•
Expires: 1993-06-08
Abstract
Abstract A screwdriver bit has a threaded portion forming a tap immediately adjacent the screw engaging end of the screwdriver.
Inventors
- 👤 Noel Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:27
CPC Classifications
B; B25; B25F; B25F1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
In a screwdriver bit having a distal end and a proximal end with the distal end having a screw engaging configuration, the improvement comprising: said bit having a portion between said distal end and said proximal end with external threads and forming a tap, said threads having a root at least as large in diameter as the largest diametrical measurement of said configuration.
Claim 2
Dependent Claim
63 words
In a screwdriver bit having a distal end and a proximal end with the distal end having a screw engaging configuration, the improvement comprising: said bit having a portion between said distal end and said proximal end with external threads and forming a tap, said threads having a root at least as large in diameter as the largest diametrical measurement of said configuration.
References Cited (Backward Citations)
US74490A
Cited
US3207196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |