Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Washer adjacent head and having a particular shape or...
Reexamination Certificate
2004-05-27
2008-03-18
Mitchell, Katherine (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Washer adjacent head and having a particular shape or...
C411S361000, C411S352000, C411S999000, C411S969000, C411S183000
Reexamination Certificate
active
07344345
ABSTRACT:
A captive shoulder nut for a electronic module heat sink has a threaded nut portion and a tubular portion extending therefrom. A ramped section in the exterior wall of the tubular portion leads to a retaining groove adjacent the bottom face of the nut portion. A compression spring is slipped over the tubular portion to ride over the ramped section and be retained at one end in the retaining groove. The tubular portion is suitable to be inserted through a straight hole, whereof the inner diameter of the spring is larger than the hole. The free end of the tubular portion is suitable to be flared to a larger diameter than the hole, thereby establishing a captivation.
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Ca
Mitchell Katherine
Paul & Paul
Southco Inc.
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