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US 6,470,918 B1Granted
Yarn processing system
AssigneeIRO Patent AG
InventorsFiorenzo Ghiardo, Lars Helge Gottfrid Tholander
Life of this patent
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AssigneeIRO Patent AG
InventorsFiorenzo Ghiardo, Lars Helge Gottfrid Tholander
Estimating the term…
A yarn processing system which includes a yarn feeding device and an accessory device associated with the yarn feeding device. The accessory device has a device which is driven using a signal representing the rotational speed of a component of the yarn feeding device. The signal is generated by an electronic sensor galvanically separated from the control system and the drive mechanism of the yarn feeding device. The sensor also is structurally independent from the yarn feeding device. The sensor is located at or close to the yarn feeding device at a mounting location where a part of a rotating magnetic field is detected by the sensor at the mounting location. The part of the magnetic field originating from inside of the yarn feeding device is not used for the operation of the yarn feeding device at the mounting location of the sensor.
A yarn processing system comprising a yarn feeding device and at least one accessory device associated with said yarn feeding device, said yarn feeding device including at least one component driven in a controlled fashion by an electric motor, said accessory device having at least one movable part which is driven through use of a signal representing the rotational speed of said component of said yarn feeding device, said signal being generated in an electronic sensor responsive to at least a portion of a rotating magnetic field, said sensor being galvanically separated from a control system or the electric motor of said yarn feeding device and structurally independent from said yarn feeding device, said sensor being positioned at or close to a housing of said yarn feeding device at an exterior mounting location where at least a portion of a magnetic field which rotates with said component within said yarn feeding device leaks through said housing and is detectable, said sensor detecting a rotational speed of said component based upon detection of said portion of the magnetic field, said portion of said magnetic field being otherwise unused in said yarn feeding device at said mounting location of said sensor.
An electronic sensor for generating a signal representing the rotational speed of a rotating component of a yarn feeding device which is driven in a controlled fashion by an electric motor received within a housing of the yarn feeding device, said sensor being galvanically separated from a control system or the electric motor of the yarn feeding device and being mounted at or close to the housing of the yarn feeding device at an exterior mounting location, said sensor comprising a pick-up head responsive to at least part of a magnetic field rotating with the component within the yarn feeding device and leaking through the housing, the part being unused for the functioning of the yarn feeding device at the mounting location of said sensor.
Dependencies are inferred from the claim text.