Title:
FASTENING NECK PORTION THAT CAN BE SCREWED IN FOR MOTOR PORTABLE DRILL MACHINE WITH NO NECK PORTION
Document Type and Number:
Japanese Patent JPS5577407
Kind Code:
A
Abstract:
A screw fastened clamping neck attachment for an electrical hand operated drill. The electrical motor of the drill is of the neckless type and has a short rotary shaft extending from the housing. The screw fastened clamping attachment is in the form of two semi-cylindrical bushings adapted to be clamped together at their base portion to form a neck, these bushings, in clamped condition, encasing an extension shaft therebetween which is to be connected to the short shaft of the electrical motor. Preferably the extension shaft has a connecting sleeve end threaded internally with the short shaft threaded externally to provide a threaded connection. Bearings are provided for the extension shaft of the attachment within the semi-cylindrical bushings. Fastening arms extend rearwardly from the bushings to support the attachment on the housing and to resist torsion.
Inventors:
ROOBERUTO BUORUFU
Application Number:
JP9332279A
Publication Date:
June 11, 1980
Filing Date:
July 24, 1979
Export Citation:
Assignee:
WOLFF ROBERT
International Classes:
B23B45/14; B23B45/00; B25F5/00; B25F5/02; (IPC1-7): B23B45/00