Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Internally threaded fastener element – e.g. – nut – etc. – Thread structure
Reexamination Certificate
2007-03-20
2007-03-20
Sandy, Robert J. (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Internally threaded fastener element, e.g., nut, etc.
Thread structure
C411S230000, C411S291000
Reexamination Certificate
active
10967197
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 nut1which is a nut threadedly engaging with a bolt10,the nut being configured so that a lateral groove3extending in the radial direction in the range such that at least a part of a threaded portion2is 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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A. Marquez, Esq. Juan Carlos
Eco World Company, Limited
Fisher Esq. Stanley P.
Reed Smith LLP
Sandy Robert J.
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