US4212336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screwdriver
Assignee: INNOVATIVE TOOL Corp A CORP OF TEX
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Filing: 1978-07-24
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Granted: 1980-07-15
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Expires: 1998-07-24
Abstract
Abstract An improved screwdriver includes a well at the top of the handle adapted to receive a torque producing socket wrench drive and couple the torque producing drive directly to the shank of the screwdriver. In one embodiment, the well is defined as a square cross-section opening, adapted to receive the drive stud of a conventional socket wrench drive. In another embodiment the screwdriver shank, adapted to receive a standard socket wrench, extends into the well.
Inventors
- 👤 William C. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:12
CPC Classifications
B; B25; B25B; B25B15/00; B25B23/00; B25B23/16; B25G; B25G1/00; B25G1/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
An improved screwdriver comprising a steel shank and a lightweight plastic handle surrounding the upper end of said shank, said shank including a standard tapered screwdriver tip at the lower end, said tip adapted to engage slots or kerfs of standard screws, and an upper end of square or hexagonal cross-section, a cylindrically shaped opening or a well positioned in the upper end of said handle, coaxial with the axis of said shank, said opening or well being large enough to receive the socket of a standard socket wrench, the upper portion of said shank extending into said opening or well, whereby said well is adapted to receive a standard socket wrench in engagement with the upper end of said shank.
Claim 2
Dependent Claim
121 words
An improved screwdriver comprising a steel shank and a lightweight plastic handle surrounding the upper end of said shank, said shank including a standard tapered screwdriver tip at the lower end, said tip adapted to engage slots or kerfs of standard screws, and an upper end of square or hexagonal cross-section, a cylindrically shaped opening or a well positioned in the upper end of said handle, coaxial with the axis of said shank, said opening or well being large enough to receive the socket of a standard socket wrench, the upper portion of said shank extending into said opening or well, whereby said well is adapted to receive a standard socket wrench in engagement with the upper end of said shank.
Claim 3
Dependent Claim
24 words
An improved screwdriver as described in claim 1, wherein the upper portion of said shank which extends into said well has a hexagonal cross-section.
Claim 4
Dependent Claim
31 words
An improved screwdriver, as defined in claim 1, wherein the upper portion of said shank, which extends into said opening or well, is below the upper surface of the plastic handle.
Claim 5
Dependent Claim
22 words
An improved screwdriver as described in claim 3, wherein the shank which extends into said opening or well has a hexagonal cross-section.
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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) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |