Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hiroaki Migita0
Date of Patent
March 20, 2007
0Patent Application Number
109671970
Date Filed
October 19, 2004
0Patent Primary Examiner
Patent abstract
The present invention has been made to solve the above problems, and accordingly an object thereof is to provide a looseness preventive nut which does not loosen even if vibrations are applied, and can be used as a single nut. In at least a first embodiment, the invention provides a looseness preventive nut 1 which is a nut threadedly engaging with a bolt 10, the nut being configured so that a lateral groove 3 extending in the radial direction in the range such that at least a part of a threaded portion 2 is cut, preferably in the range beyond the centerline C of the nut, is formed at a position slightly lower than a substantially middle point of the nut in the height direction.
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