Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1985-03-21
1987-02-17
Parker, Roscoe V.
Tools
Wrench, screwdriver, or driver therefor
Machine
81438, 81125, 16DIG24, B25B 1700
Patent
active
046430520
ABSTRACT:
A bevel gear driven offset screwdriver arrangement includes a housing which bounds an elongated passage and an opening which communicates with the passage and is centered on an axis that includes an obtuse angle of substantially between 100.degree. and 135.degree., preferably 105.degree., with the axis of the passage. A shaft is rotatably received in the passage and carries at its end close to the opening a first bevel gear which meshes with a second bevel gear that is rotatably received in the opening. The housing is constituted by two separate half-shell sections which are held together by two holding rings that are slid onto semi-tubular regions of such sections and urge the latter together, as well as by screws. The second bevel gear has a central recess of a non-circular cross-sectional configuration, and a compatibly configurated support portion of a bit element is received in this recess and entrained for joint turning with the second gear element. A magnetic element accommodated in the housing cooperates with the support portion of the bit element, which is of a magnetically attractable material, to hold the support portion in the central recess against falling out of it in the axial direction. The magnetic element simultaneously serves as a thrust bearing for the bit element during the use of the arrangement.
REFERENCES:
patent: 1333532 (1920-03-01), Berk
patent: 1352354 (1920-09-01), Church
patent: 1494200 (1924-05-01), Waters
patent: 2550775 (1951-05-01), Clark
patent: 3742533 (1973-07-01), Brunette
patent: 4448095 (1984-05-01), Blodgette et al.
patent: 4524649 (1985-06-01), Diaz et al.
Custom Spec Engineering, Inc.
Meislin Debra S.
Parker Roscoe V.
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