Single-motor drive for a shaftless spinning rotor and method for

Details Single-motor drive for a shaftless spinning rotor and method for Single-motor drive for a shaftless spinning rotor and method for

1995-06-14

1998-01-20

Wysocki, Jonathan

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318375, 318380, H02K 710

Patent

active

057104948

ABSTRACT:
A single-motor drive for an open-end spinning machine, the motor being in the form of an axial field motor with a magnet/gas bearing supporting the rotor with a gas cushion, includes a gas monitoring arrangement which will detect a disruption in the gas supply, and responsive to the gas disruption, a device for braking the rotor is connected with the circuit via a switch. The braking device, which includes a ballast resistor, is set for reducing the rotational speed of the rotor in a manner whereby when the rotor bearing surface lands on the stator bearing surface due to the collapse of the air cushion, its rotational speed is less than that which would result in damage to the bearing surfaces.

REFERENCES:
patent: 3931560 (1976-01-01), Wilson
patent: 5317221 (1994-05-01), Kubo et al.

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