Desk-top cutting machine

Details Desk-top cutting machine Desk-top cutting machine

1994-10-20

1996-11-12

Rada, Rinaldi I.

Cutting

With means to monitor and control operation

Including means to correct the sensed operation

83 72, 83490, 834713, B26D 500

Patent

active

055729169

ABSTRACT:
In a desk-top cutting machine, a magnet 24 and a magnetic pickup 22 are attached to a motor shaft 12. A control circuit 28 is provided for controlling a TRIAC 23 in response to the signal from the detection means. Further, a dynamic braking coil 25 which serves as braking means for a motor 11 when power supply to the motor 11 is stopped is provided in the motor 11. The dynamic braking coil 25 stops within a time during which no slip is produced between the motor shaft 12 and endless belt 18 and between the cutting blade shaft 10 and endless belt 18. In this way, the rpm and torque of the motor are controlled from motor starting to cutting and motor stopping.

REFERENCES:
patent: 3324373 (1967-06-01), Stamm
patent: 3715946 (1973-02-01), Kaltenbach
patent: 4823067 (1989-04-01), Weber
patent: 4873478 (1989-10-01), Weiss
patent: 5285708 (1994-02-01), Bosten et al.
patent: 5296795 (1994-03-01), Dropps et al.
patent: 5355060 (1994-10-01), Peterson

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