Barrier formed by resistance projection welding
AssigneeEdward L. Gibbs
InventorsEdward L. Gibbs, Fred L. Givens, Gary W. Vonnahme
Life of this patent
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Abstract
A barrier such as a fence is formed by welding conductive upright members to conductive U-shaped rails by a projection resistance welding process. The rail includes at least one weld-forming region which projects within the rail channel, and may be formed wither as a ridge, or as a longitudinally spaced series of nipple-shaped projections. The upright member is transversely positioned within the rail channel in contact with the weld-forming region. A welding current transmitted between the upright member and the rail causes the weld-forming region to at least partially melt and form a weld within the rail channel.
Claims10
A barrier comprising:
- at least one elongate rail, comprising:
- a flat web;
- and
- a pair of opposed side walls extending from the web to define a rail channel, with at least one of the side walls having a weld-forming region which projects within the rail, channel and comprises a longitudinal ridge which extends along at least a portion of the length of its respective side wall;
- and
- at least one vertical upright member partially situated within the rail channel and secured to the rail by a resistance weld formed within the rail channel between the side wall and the upright member at the weld-forming region.
Dependencies are inferred from the claim text.