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US 4,780,035 AGranted
Rotary welding member made of resin
AssigneeNifco Inc.
InventorsTeruji Shibayama, Yoshio Kaneko
Life of this patent
Estimating the term…
Abstract
A rotary welding member made of synthetic resin material comprising a post portion, and a disk-shaped flange portion integrally mounted on one end of the post portion and having at least one groove in the mounting surface thereof for permitting air to flow therethrough with respect to an exterior periphery surface portion of the flange portion whereby excess frictional heat generated during the rotary welding process is effectively dissipated.
Claims20
A rotary welding member integrally molded of synthetic resin material, comprising:
- a post portion;
- a disk-shaped flange portion integrally formed upon one end of said post portion;
- said disk-shaped flange portion having a surface to be friction welded to a substrate as a result of partial melting of said surface of said disk-shaped flange portion in response to heat generated between said surface of said disk-shaped flange portion and said substrate during high-speed rotation of said welding member while in contact with said substrate, and an external peripheral surface circumferentially surrounding said friction welded surface;
- and
- groove means defined within said friction welded surface of said disk-shaped flange portion and intersecting said peripheral surface of said disk-shaped flange portion so as to be in fluidic communication with said peripheral surface of said disk-shaped flange portion and the ambient atmosphere surrounding said disk-shaped flange portion and thereby permit cooling air to flow through said groove means under said rotary conditions whereby an excessive portion of said generated heat is dissipated so as to prevent deterioration of said substrate.
2 more elements
Dependencies are inferred from the claim text.