Patent US4437365A successfully refreshed from Google Patents.
US4437365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screwdriver
Assignee: Individual
•
Filing: 1982-03-08
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Granted: 1984-03-20
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Expires: 2002-03-08
Abstract
Abstract A screwdriver capable of being operated conventionally by the handle as a manual drive and alternatively being capable of being connected to a power drill so that it may be driven automatically. The screwdriver includes a conventional shank and tip at its end to engage the head of a screw. The handle has a coupling either permanently or removably attached to its top and which is adapted to fit into a conventional chuck of a power drill so as to connect the screwdriver to the power drill so that it may be driven automatically.
Inventors
- 👤 Yigal Y. Yaari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:47
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/02; B25B21/00; B25B21/007; Y; Y10; Y10T; Y10T279/00; Y10T279/34; Y10T279/3406
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
155 words
A screwdriver capable of being operated manually or automatically comprising: a shank, a tip formed at the free end of the shank adapted to engage the head of a screw, a handle permanently fixed on the other end of the shank by which the screwdriver may be operated manually, said handle having a well, non-circular in cross section, extending axially in the handle from the handle end remote from the shank, and a coupling having one end with a cross-sectional shape that conforms to the cross-section of the well and fitting snugly into the well but removable therefrom so that the screwdriver may be operated manually without interference from the coupling, said coupling having a second end that is adapted to be engaged by the chuck of a power drill so that the screwdriver may be powered by a power drill when the coupling is connected both to the power drill chuck and the handle.
Claim 2
Dependent Claim
155 words
A screwdriver capable of being operated manually or automatically comprising: a shank, a tip formed at the free end of the shank adapted to engage the head of a screw, a handle permanently fixed on the other end of the shank by which the screwdriver may be operated manually, said handle having a well, non-circular in cross section, extending axially in the handle from the handle end remote from the shank, and a coupling having one end with a cross-sectional shape that conforms to the cross-section of the well and fitting snugly into the well but removable therefrom so that the screwdriver may be operated manually without interference from the coupling, said coupling having a second end that is adapted to be engaged by the chuck of a power drill so that the screwdriver may be powered by a power drill when the coupling is connected both to the power drill chuck and the handle.
Claim 3
Dependent Claim
39 words
A screwdriver as defined in claim 1 further characterized by: a flange provided on the coupling intermediate its ends to limit the depth of insertion of the coupling into the chuck and prohibit the handle from engaging the chuck.
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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) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |