Cable hose with conductive electromagnetic interference shield
AssigneeThe ESAB Group, Inc.
InventorsJames Tantillo, Michael Nadler, Andrew Raymond
Life of this patent
Estimating the term…
Abstract
A cable hose suitable for welding or cutting systems includes tubing, one or more conductors, and an annular electromagnetic interference (EMI) shield. The EMI shield is disposed radially interiorly of at least a portion of the tubing and radially exteriorly of the one or more conductors. Thus, the EMI shield: (1) prevents EMI emanating from the one or more conductors from exiting the cable hose radially; and (2) conducts current between components of a welding or cutting system.
Claims20
A cable hose suitable for welding or cutting systems, comprising:
- tubing;
- a plurality of conductors comprising:
- a high frequency conductor;
- and
- a second conductor dedicated to conducting operating signals;
- and
- a conductive, annular electromagnetic interference (EMI) shield that is disposed radially interiorly of at least a portion of the tubing and radially exteriorly of the plurality of conductors, the EMI shield being configured to:
- (1) prevent EMI emanating from the plurality of conductors from exiting the cable hose radially during arc initiation;
- and (2) complete a circuit between a power source and an electrode of a welding or cutting system after arc initiation and conduct working current to the electrode.
A welding or cutting system comprising:
- a power source;
- a torch assembly;
- and
- a cable hose extending between the power source and the torch assembly, the cable hose including tubing, a plurality of conductors, and a conductive, annular electromagnetic interference (EMI) shield that is disposed radially interiorly of at least a portion of the tubing and radially exteriorly of the plurality of conductors;
- the plurality of conductors comprising:
- a high frequency conductor;
- and
- a second conductor dedicated to conducting operating signals,
- wherein, the EMI shield is configured to:
- (1) prevent EMI emanating from the plurality of conductors from exiting the cable hose radially during arc initiation;
- and (2) complete a circuit between the power source and an electrode after arc initiation to conduct working current to the electrode of the torch assembly.
A method of forming a cable hose, comprising:
- providing a conductive, annular electromagnetic interference (EMI) shield for the cable hose, the annular EMI shield comprising braided conductors configured to conduct a working current for a plasma arc torch;
- arranging a plurality of conductors in a specific configuration radially interiorly of the annular EMI shield so that the annular EMI shield prevents EMI emanating from the one or more plurality of conductors from exiting the cable hose radially, the plurality of conductors comprising a high frequency start conductor and a second conductor dedicated to conducting operating signals;
- and
- arranging tubing radially exterior of the annular EMI shield so the annular EMI shield can complete a circuit and conduct current between a power source and an electrode of a welding or cutting system.
Dependencies are inferred from the claim text.