Invention Grant
- Patent Title: Blind tack bolt with higher clamp-up strength
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Application No.: US14672794Application Date: 2015-03-30
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Publication No.: US09931688B2Publication Date: 2018-04-03
- Inventor: Scott William Gunther , Edward John Batt , Farahnaz Sisco
- Applicant: The Boeing Company
- Applicant Address: US IL Chicago
- Assignee: THE BOEING COMPANY
- Current Assignee: THE BOEING COMPANY
- Current Assignee Address: US IL Chicago
- Agency: Parsons Behle & Latimer
- Main IPC: F16B19/05
- IPC: F16B19/05 ; B21J15/04 ; B23P25/00 ; F16B19/10

Abstract:
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.
Public/Granted literature
- US20150275953A1 BLIND TACK BOLT WITH HIGHER CLAMP-UP STRENGTH Public/Granted day:2015-10-01
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