Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1980-01-10
1981-10-13
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Machine
B25B 2306
Patent
active
042941423
ABSTRACT:
An automatic power-driven screwdriver comprises a first cylindrical member having a hand grip portion, a guide portion, a tapered portion and a flanged portion between the tapered and hand grip portions. A second cylindrical member, which is a nose portion of the screwdriver, is mounted to telescope over the guide portion. A third cylindrical member encircles the guide portion and is slidably mounted at one end over the second cylindrical member. The third member is formed with a tapered contacting surface complementary to the surface of the tapered portion of the first member. An adjusting nut having an inwardly extending flange is mounted on the first member with the flange being in contact with the flanged portion and is threadably engaged with the third member so that the tapered contacting surfaces are brought into firm pressure contact which enables the first and second cylindrical members to be secured firmly together. By loosening the nut the nose portion of the apparatus can be rotated to a desired annular position with respect to the hand grip portion so that a screw feeder tube, connected to the nose portion, is not hindered by an obstacle which might be present in working areas.
REFERENCES:
patent: 4204439 (1980-05-01), Kondo
Morimoto Takao
Sugahara Syunji
Jones Jr. James L.
Matsushita Electric Industrial Company Limited
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