Blind tack bolt with higher clamp-up strength

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United States of America Patent

PATENT NO 9931688
SERIAL NO

14672794

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A blind tack fastener includes a pull stem having an elongated shaft with an extended tail portion. The blind tack fastener also includes a crush-initiating washer, a crush sleeve, and a swage collar, surrounding the elongated shaft of the pull stem. The elongated shaft has a breakaway groove configured to create a predictive fracture point below the head-end surface of the swage collar, such that a hole in the swage collar serves as a centering lead-in for a drill that can be used to remove the blind tack fastener.

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Patent Owner(s)

  • THE BOEING COMPANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Batt, Edward John Bothell, US 12 50
Gunther, Scott William Seattle, US 2 4
Sisco, Farahnaz Mukilteo, US 19 11

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