Comminuting apparatus with three-phase synchronous motor and...

Details Comminuting apparatus with three-phase synchronous motor and... Comminuting apparatus with three-phase synchronous motor and...

2006-07-31

2008-12-30

Francis, Faye (Department: 3725)

Solid material comminution or disintegration

Apparatus

Combined or convertible

C241S242000

Reexamination Certificate

active

07469850

ABSTRACT:
A comminuting apparatus having a compact, variable-speed drive unit with a high level of efficiency and high torque levels. The comminuting apparatus comprises a drive device having an electric motor operatively connected by way of a transmission device to a comminuting shaft that has comminuting tools at its periphery. The tools cooperate with a counterpart member to comminute the material to be processed. The electric motor is in the form of a high-pole three-phase synchronous motor that is electrically connected to the output of a frequency converter controlled by a control device, and the transmission device is in the form of an epicyclic transmission device. The motor surrounds the epicyclic transmission device at least in part, and the motor and the transmission device are arranged in a common housing.

REFERENCES:
patent: 4545539 (1985-10-01), Steffensen
patent: 7168640 (2007-01-01), Lipowski
patent: 2007/0164139 (2007-07-01), Lipowski et al.
patent: 203 13 327 (2003-11-01), None
patent: 0 419 919 (1999-04-01), None
Office Action Issued by the German Patent Office for Corresponding Application No. DE 10 2005 037 668.1.

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