One-way nut fastener
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United States of America Patent
Stats
-
Dec 16, 2003
Grant Date -
May 22, 2003
app pub date -
Nov 16, 2001
filing date -
Nov 16, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A novel, one-way nut fastener including a nut body with a side wall that is internally threaded and lobes that extend from the side wall of the nut body. Each lobe has a flat portion that extends substantially radially away from the side wall and a curved portion that extends from the flat portion to the flat portion of an adjacent lobe. A special tool uses the leverage that is gained from the flat portions of the lobes to tighten the cap threads onto the threads of a stem portion. Since the leverage gained from the lobes, which is used to tighten the nut fastener, cannot be used to loosen the fastener, it is much more difficult to remove the nut fastener.
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