Automatic screw driver and a method for controlling the same

Details Automatic screw driver and a method for controlling the same Automatic screw driver and a method for controlling the same

1990-08-21

1993-02-16

Swann, J. J.

Tools

Wrench, screwdriver, or driver therefor

Machine

81433, 81 5737, B25B 2306

Patent

active

051860848

ABSTRACT:
An automatic screw driver and a method for controlling the same, characterized by a fluid chamber in which a suction force is developed so as to retain stably a screw at a predetermined position irrespective of kind of material for the screw preparatory to a screwing operation of the driver, and a control circuit including a plurality of timers in order to perform a sequential operation consisting of steps of supplying the screw at the tip end of a bit, perpendicularly retaining the screw there and entering a standby state for the screwing operation, and actuating a driver when the sequential operation is completed, so that the screwing operation is facilitated and stabilized, resulting in a considerable improvement in the efficiency thereof.

REFERENCES:
patent: 1839490 (1932-01-01), Moeller
patent: 3583451 (1971-06-01), Beluidere
patent: 3642039 (1972-02-01), McGee
patent: 3656520 (1972-04-01), Caffa
patent: 4246939 (1981-01-01), Boegel
patent: 4495841 (1985-01-01), Mori et al.

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