Rivet bolt in combination with an attachment and process for making same

摘要

A rivet bolt in combination with an attachment wherein the rivet bolt includes: a flange having a top surface and a bottom surface, and, a shaft having a threaded portion. An upper cylindrical portion of the rivet bolt includes an upper edge and an interior base surface having a drive head socket. The attachment receives the rivet bolt and comprises: a top surface, a bottom surface, a cylindrical bore therethrough, and an inverted frusto-conical surface extending from the top surface to the cylindrical bore. The upper cylindrical portion of the rivet bolt is deformed and rotatably and slidingly engages the inverted frusto-conical surface extending from the top surface of the attachment to the cylindrical bore therethrough. The upper cylindrical portion of the rivet bolt resides partially within the cylindrical bore. A process for making a rivet bolt in combination with an attachment is disclosed.

主权项

1. A rivet bolt in combination with an attachment, comprising:
said rivet bolt comprising: a flange; said flange includes a top surface and a bottom surface: an upper cylindrical portion; a first fillet between said upper cylindrical portion and said flange; a shaft; a second fillet between said shaft and said flange; said shaft includes a threaded portion; said upper cylindrical portion includes an upper edge; said upper cylindrical portion includes an interior base surface; an inverted frusto-conical surface extending from said upper edge of said cylindrical upper portion to interior base surface; said attachment comprising: a top surface and a bottom surface; a cylindrical bore therethrough; an inverted frusto-conical surface extending from said top surface of said attachment to said cylindrical bore through said attachment; said top surface of said flange of said rivet bolt engages said bottom surface of said attachment; and, said upper cylindrical portion of said rivet bolt resides partially within said cylindrical bore of said attachment.