Invention Grant
- Patent Title: Threaded fastener
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Application No.: US17325842Application Date: 2021-05-20
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Publication No.: US11719272B2Publication Date: 2023-08-08
- Inventor: Victor Truong , Michael C. Dill , Yongping Gong , Mark D. Latz
- Applicant: Illinois Tool Works Inc.
- Applicant Address: US IL Glenview
- Assignee: Illinois Tool Works Inc.
- Current Assignee: Illinois Tool Works Inc.
- Current Assignee Address: US IL Glenview
- Agency: Neal, Gerber & Eisenberg LLP
- Main IPC: F16B31/02
- IPC: F16B31/02 ; F16B25/10 ; F16B35/06 ; F16B25/00 ; F16B39/282

Abstract:
Various embodiments provide a fastener including a head, a shank connected to the head and having a tip, one or more helical thread formations extending outwardly from the shank, and wherein a bottom portion of the head includes a plurality of ribs that extend towards the tip of the shank and that are shaped to abruptly frictionally engage a surface of a first object being attached to a second object to create an immediate frictional torsional resistance of a desired force level to the tightening of the fastener. This frictional resistance is provided back to the tightening tool to inform the operator of the tightening tool that the head of the fastener has sufficiently engaged the first object and that further tightening or clockwise rotation of the fastener is unnecessary.
Public/Granted literature
- US20210270306A1 THREADED FASTENER Public/Granted day:2021-09-02
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