Invention Grant
- Patent Title: Chiplessly thread-forming screw
- Patent Title (中): 无缝螺纹成型螺丝
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Application No.: US11804268Application Date: 2007-05-16
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Publication No.: US08342788B2Publication Date: 2013-01-01
- Inventor: Sven Matthiesen , Frank Rieger , Peter Hertlein , Michael Baumgartner , Peter Mugg , Matthias Schaefer
- Applicant: Sven Matthiesen , Frank Rieger , Peter Hertlein , Michael Baumgartner , Peter Mugg , Matthias Schaefer
- Applicant Address: LI Schaan
- Assignee: Hilti Aktiengesellschaft
- Current Assignee: Hilti Aktiengesellschaft
- Current Assignee Address: LI Schaan
- Agency: Abelman, Frayne & Schwab
- Priority: DE102006000232 20060516
- Main IPC: F16B25/00
- IPC: F16B25/00
Abstract:
A chiplessly thread-forming screw has a stem (11) at one end of which a tip (13) is provided and at another end of which a head (14) is provided, and which has a pointed conical section (21) extending from the tip (13) in a direction of the head (14), a cylindrical section (25) arranged between the first pointed section (21) and the head (14), a first cambered section (22) adjoining the pointed conical section (21) in the direction of the head, and a second cambered section (24) arranged between the first cambered section (22) and the cylindrical section (25) and an outer surface (16) of which has a second curvature radius (R2) unequal to the first curvature radius (R1) of the outer surface (12) of the first cambered section (21).
Public/Granted literature
- US20080038088A1 Chiplessly thread-forming screw Public/Granted day:2008-02-14
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