Method and apparatus for conducting dripless, smut-free stud welding
CA 1308447 C · Owner: Trw Inc. · Inventors: Shoup, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus are provided for welding a stud to a workpiece and maintaining the area around the weld substantially free of smut. The existence of the smut detracts from the appearance of the workpiece and if the workpiece is, to be painted or otherwise covered with a coating material the smut must first be removed. A spark shield assembly has an outer end which is placed in contact with the workpiece around the stud. Anti-smut liquid is first deposited from the assembly on the weld area around the end of the stud where the weld occurs thereby to eliminate the deposit of a coating of smut. Air is then directed through the spark shield assembly toward the outer end thereof after the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 6, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 6, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.