US4325153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined screwdriver and boring apparatus
Assignee: Individual
•
Filing: 1979-10-22
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Granted: 1982-04-20
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Expires: 1999-10-22
Abstract
Abstract A combined screwdriver and boring apparatus comprising a tool having a handle, removable cutting and screwing blades, each of the blades having both downwardly tapered cutting edges thereon and an elongated tip adapted to enter a hole in the slotted head of a screw for both preforming a seat for the threaded shank of a screw, keying the screw to the blade for holding the screw to the blade when initiating screwing and flat surfaces engaging the slot in the screw for screwing the same.
Inventors
- 👤 Charles Finnegan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:38
CPC Classifications
F; F16; F16B; F16B23/00; F16B23/0007; F16B23/0015; B; B25; B25B; B25B15/00; B25B15/001; B25B15/004; B25B15/007
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
223 words
An apparatus for performing a hole in wood or the like, holding a screw prior to screwing the same into a substrate and screwing the screw into the substrate comprising: a tool having a handle, an elongated shank extending from the handle, and a screw-engaging tip at the terminal end of said shank, said tip having oppositely disposed generally flat sides and a pair of oppositely disposed downwardly extending tapered cutting surfaces terminating in an elongated point; and, a screw having a threaded shank and a tapered head, said head having a driver receiving slot therein, said slot having a first and a second portion, said slot's first portion being a downwardly extending elongated slot, and the second portion commencing at a point inwardly spaced from each end of said first portion and being a downwardly tapered slot conforming to the taper of the head, and communicating with said first portion, said first portion having a pair of spaced opposed generally flat sidewalls forming said slot, the distance between said sidewalls being generally the same as the width of said flat sides so that said tip is insertable into said screw receiving slot in a manner providing a friction fit therebetween, said screw shank having a generally centerally located downwardly extending bore communicating with said slot's second portion for receiving said point therein.
Claim 2
Independent Claim
223 words
An apparatus for performing a hole in wood or the like, holding a screw prior to screwing the same into a substrate and screwing the screw into the substrate comprising: a tool having a handle, an elongated shank extending from the handle, and a screw-engaging tip at the terminal end of said shank, said tip having oppositely disposed generally flat sides and a pair of oppositely disposed downwardly extending tapered cutting surfaces terminating in an elongated point; and, a screw having a threaded shank and a tapered head, said head having a driver receiving slot therein, said slot having a first and a second portion, said slot's first portion being a downwardly extending elongated slot, and the second portion commencing at a point inwardly spaced from each end of said first portion and being a downwardly tapered slot conforming to the taper of the head, and communicating with said first portion, said first portion having a pair of spaced opposed generally flat sidewalls forming said slot, the distance between said sidewalls being generally the same as the width of said flat sides so that said tip is insertable into said screw receiving slot in a manner providing a friction fit therebetween, said screw shank having a generally centerally located downwardly extending bore communicating with said slot's second portion for receiving said point therein.
Claim 3
Dependent Claim
19 words
In the apparatus of claim 1 wherein the bore in the shank at its end tapers to a point.
Claim 4
Dependent Claim
15 words
In the tool of claim 1 wherein said shank is removably mounted in said handle.
Claim 5
Dependent Claim
18 words
In the tool of claim 1 wherein said point includes a pair of oppositely disposed cutting surfaces thereon.
Claim 6
Dependent Claim
14 words
In the apparatus of claim 1 wherein said bore is generally circular in 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) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |