Back to results
US 2024/0291174 A1Published application
Resistance welding fastener, apparatus and methods
AssigneeHowmet Aerospace Inc.
InventorsDonald J. Spinella, Daniel Bergstrom
Life of this patent
Estimating the term…
Abstract
An apparatus and method for fastening dissimilar materials like steel, plastic and aluminum. A resistance welding fastener having multiple layers may be used with or without a sealant. The fastener may be used to form an aluminum covered steel laminate via a hemming pattern of attachment. The fastener may have a solid shaft or have an extended reach and have features for interacting with the welding electrode. A variety of electrode tips may be employed to cooperate with the fastener.
Claims20
A tip for a welding electrode, comprising:
- a first end;
- a second end opposite the first end;
- a first portion extending from the first end to a first location between the first end and the second end,
- wherein the first portion includes a first diameter;
- and
- a second portion extending from the second end to a second location between the first end and the second end,
- wherein the second portion includes a second diameter,
- wherein the first diameter is larger than the second portion, and
- wherein the second end is a radiused end.
6 more elements
A system, comprising:
- a welding electrode;
- and
- a tip attached to the welding electrode,
- wherein the tip includes
- a first end,
- a second end opposite the first end,
- a first portion extending from the first end to a first location between the first end and the second end,
- wherein the first portion includes a first diameter;
- and
- a second portion extending from the second end to a second location between the first end and the second end,
- wherein the second portion includes a second diameter,
- wherein the first diameter is larger than the second diameter portion,
- wherein the second end is a radiused end, and
- wherein the tip is attached to the welding electrode at the first end.
11 more elements
Dependencies are inferred from the claim text.