Fastener and heat sink assembly having the same

Details Fastener and heat sink assembly having the same Fastener and heat sink assembly having the same

2009-03-24

2010-10-05

Thompson, Gregory D (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C165S080200, C165S080300, C165S185000, C257S719000, C361S704000, C361S707000

Reexamination Certificate

active

07808791

ABSTRACT:
A fastener includes a connecting pole, a sleeve, an elastic element enclosing the sleeve and a baffling portion. The connecting pole includes a shaft, a head and a thread portion. The sleeve includes an engaging portion and a receiving portion extending from the engaging portion. The engaging portion encloses a top end of the shaft therein and abuts against the head. The receiving portion encloses a bottom end of the shaft and a top end of the thread portion. The receiving portion includes a plurality of spaced resilient pieces. The baffling portion screws onto the thread portion of the connecting pole. When the connecting pole rotates relative to the sleeve, the baffling portion moves upwardly along the thread portion to push the pieces of the receiving portion outwardly to make the pieces abut against a bottom surface of a printed circuit board.

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