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US 7,598,472 B2Granted
Device for cooling welding caps
AssigneeBurkert Werke GmbH & Co.
InventorHartmuth Lotha
Life of this patent
Estimating the term…
Abstract
A device for cooling welding caps of a welding apparatus includes a cooling line (10). A cooling agent is kept under pressure during removal of the welding caps. An expansion device (16) including an expansion chamber (34) is connected to the cooling line (10).
Claims12
A device for cooling welding caps of a welding apparatus, comprising:
- a cooling line adapted for having a cooling agent flowing therein;
- an expansion device connected to and in fluid flow communication with said cooling line, said expansion device including an expansion chamber, said expansion chamber being completely sealed except for the fluid flow connection to said cooling line;
- means in said cooling line for automatically sealing said cooling agent under pressure in said cooling line when said welding caps are removed for replacement;
- said expansion chamber including means for allowing cooling agent to flow therein from said cooling line for reducing pressure in said cooling line, said expansion chamber housing cooling agent therein when said means in said cooling line automatically seals said cooling agent in said cooling line;
- whereby the pressure in said cooling line is automatically reduced by said cooling agent flowing into said expansion chamber of said expansion device.
2 more elements
A method for removing welding caps of a welding apparatus comprising a cooling line, a cooling agent flowing in said cooling line, and an expansion device including an expansion chamber, said method comprising the steps of:
- providing a fluid flow connection between said expansion chamber and said cooling line;
- enclosing said cooling agent under pressure in said cooling line when said welding caps are to be removed;
- automatically reducing the pressure in said cooling line by flow of said enclosed cooling agent under pressure through said fluid flow connection, thereby enlarging said expansion chamber.
Dependencies are inferred from the claim text.