Self-plugging blind rivet
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 12, 1989
Grant Date -
N/A
app pub date -
Mar 7, 1988
filing date -
Mar 19, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The rivet comprises a tubular rivet body of deformable material, and an elongate stem extending through the bore of the body. The body comprises a cylindrical shank and an enlarged rivet head at one end of the shank. The rivet head may be integral with, or separate from, the shank. The stem includes a plug, and a stem-tail connected to the plug by a frangible breakneck. The plug has a terminal head for abutting the shank, whereby the shank can be axially compressed on pulling the stem-tail and thereby deformed to form a blind head, and a locking groove circumferentially of the plug for receiving material of the rivet head which, during installation of the rivet, will be swaged radially inwardly into the locking groove to lock the plug in the body. The locking groove is of helical form, as with a screw thread, and enables the plug to be removed from the body by rotation, thus facilitating disassembly of the installed rivet and its removal from a workpiece. Forming the rivet head separately from the shank further facilitates removal of the body from the workpiece after removal of the plug.
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