Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1986-04-10
1987-06-23
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Machine
81433, 81434, 81435, B25B 2306
Patent
active
046743677
ABSTRACT:
A portable screwdriver comprises a prime mover and, an apparatus formed as a couplable attachment, which contains the screwing tool on a drive shaft which can be connected to the prime mover. The apparatus carries a magazine receptacle for a strip-like screw magazine from which the screws are pressed under spring tension into an arcuate screw guide, where they are held between two retaining jaws until the screwing tool has taken them up and has released them for insertion purposes by swinging the retaining jaws apart. The apparatus is particularly suitable for self-tapping screws and has a narrow front cross-section, so that it can also be used at otherwise inaccessible points.
The easily replaceable screw magazine comprises a plastic profile with screws guided parallel to one another and at right angles on the heads. The screws can be constructed with plastic heads and jamming ribs provided thereon.
REFERENCES:
patent: 2770269 (1956-11-01), Austin
patent: 3449988 (1969-06-01), Gallo
patent: 3929176 (1975-12-01), Dixon
patent: 4246939 (1981-01-01), Boegel
patent: 4314489 (1982-02-01), Arcangeli
patent: 4367837 (1983-01-01), Manino
patent: 4404877 (1983-09-01), Mizuno et al.
patent: 4478112 (1984-10-01), Moulton
Aab Hans W.
Kniese Arnd
EJOT Eberhard Jaeger GmbH & Co. KG
Meislin Debra S.
Schmidt Frederick R.
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