Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member or portion thereof located between substructure and...
Reexamination Certificate
2004-07-21
2010-02-16
Estremsky, Gary (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member or portion thereof located between substructure and...
C411S140000, C411S163000, C411S180000, C411S952000
Reexamination Certificate
active
07661914
ABSTRACT:
A loosening-proof screw fastening device, including at least one stop wheel on at least one of a plurality of contacting faces; the at least one stop wheel is rotatably assembled in a locating hole on said at least one contacting face with its stop tooth slightly protruded beyond the contacting face; upon application of a backward action force for loosening the fastening device a created torque will bring the at least one stop wheel into rotation and make a stop tooth of the at least one stop wheel protrude beyond the contacting face and penetrate into a surface closely opposed to the at least one contacting face for preventing the fastening device from loosening.
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Estremsky Gary
Rabin & Berdo P.C.
Xiamen Yuchengjie Electromechanical Science & Technology Co
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