Metal fusion bonding – Process – Using dynamic frictional energy
Reexamination Certificate
2008-06-25
2010-06-01
Stoner, Kiley (Department: 1793)
Metal fusion bonding
Process
Using dynamic frictional energy
C228S114500, C156S073500
Reexamination Certificate
active
07726542
ABSTRACT:
A welded assembly includes a weld joint formed via a spin-welding process. A disc receives a cylinder prior to spin-welding, with the disc having a circumferential groove undercutting or defining an annular shelf. An interlocking feature retaining the cylinder and disc is formed between a flow pattern of the cylinder and the annular shelf upon cooling of molten flash in the groove underneath the annular shelf. Teeth can be formed integrally with the disc to provide a torsional interlocking feature between the disc and cylinder. A method for forming a weld joint between a plastic cylinder and disc includes providing the disc with a circumferential groove forming an annular shelf, and rotating the cylinder with respect to the disc under an axial force to thereby form an outflow of molten flash. The flash forms an interlocking feature when cooled after flowing into the groove underneath the shelf.
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GM Global Technology Operations Inc.
Quinn Law Group PLLC
Stoner Kiley
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