US4327790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener driving device with multiple bits
Assignee: CORKUM BERNARD B
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Filing: 1980-07-03
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Granted: 1982-05-04
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Expires: 2000-07-03
Abstract
Abstract A screwdriver comprises a handle having four screwdriver blades pivotally connected adjacent one end. The blades may be pivoted from a stored position alongside the handle to an operative position in advance of the handle. A locking device locks the blade in an operative position and comprises a disc rotatably mounted on the one end of the handle with a slot to engage the blade. The slot has a radial portion and a circumferential position so that the blade first enters the radial portion and the disc is then rotated to hold the blade in the circumferential portion.
Inventors
- 👤 Larry G. H. Stevens
- 👤 Edmund G. F. Sweet
- 👤 Franklin V. Vresk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:00
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/18; B25F; B25F1/00; B25F1/02; B25F1/04; B25G; B25G1/00; B25G1/08; B25G1/085
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
A driving device for driving rotatable fasteners, said driving device comprising a handle, a plurality of driving bits spaced about said handle, pivot means pivotally connecting each of said bits to one end of said handle to permit movement of each of said bits from a stored position in which said bit lies alongside said handle to an operative position in which said bit extends beyond said one end of said handle and lock means rotatably supported on said handle and operable between said bit and said handle to lock said bit in said operative position, said lock means including a passageway selectively alignable with each of said bits by rotation of said lock means relative to said handle, said bit passing through said passageway in moving from said stored to said operative position and being locked in said operative position by rotation of said lock means to move said bit and said passageway out of alignment.
Claim 2
Dependent Claim
157 words
A driving device for driving rotatable fasteners, said driving device comprising a handle, a plurality of driving bits spaced about said handle, pivot means pivotally connecting each of said bits to one end of said handle to permit movement of each of said bits from a stored position in which said bit lies alongside said handle to an operative position in which said bit extends beyond said one end of said handle and lock means rotatably supported on said handle and operable between said bit and said handle to lock said bit in said operative position, said lock means including a passageway selectively alignable with each of said bits by rotation of said lock means relative to said handle, said bit passing through said passageway in moving from said stored to said operative position and being locked in said operative position by rotation of said lock means to move said bit and said passageway out of alignment.
Claim 3
Dependent Claim
21 words
A driving device according to claim 1 wherein said bits are located within recesses in said handle in said stored position.
Claim 4
Dependent Claim
58 words
A driving device according to claim 1, wherein said lock means comprises a cap rotatably mounted on one end of said handle and having said passageway formed therein, said cap being rotatable upon entry of said bit in said passageway to move a circumferential wall into alignment with said bit to hold said bit in said operative position.
Claim 5
Dependent Claim
44 words
A driving device according to claim 3 wherein said passageway includes a radial portion and the circumferential wall is part of a connecting circumferential slot, said bit initially entering said radial portion and being held in said circumferential slot upon rotation of said cap.
Claim 6
Dependent Claim
37 words
A driving device according to claim 1 wherein said pivot means are spaced from the axis of said handle and said blades are cranked intermediate their ends to extend alongside said longitudinal axis in said operative position.
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) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |