Fastener with integral locking means
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 27, 1990
Grant Date -
N/A
app pub date -
Jul 11, 1988
filing date -
Jul 11, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A blind fastener for securely and economically fastening a plurality of members having a mandrel with an enlarged head and a generally cylindrical stem with a locking groove, and a sleeve with a generally tubular portion surrounding a portion of the stem, a flange extending radially from the end of the tubular portion opposite the stem head, and a boss extending axially from the flange opposite the tubular portion, so that application of tension to the stem and compression to the boss causes upsetting of the fastener, compression of the members, elongation of the stem, and displacement of the boss material into the locking groove, thereby locking the mandrel and sleeve to prevent them from springing back upon breaking of the mandrel stem.
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