Invention Grant
- Patent Title: Locking screw driver handle
- Patent Title (中): 锁定螺丝刀手柄
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Application No.: US12187590Application Date: 2008-08-07
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Publication No.: US07938044B2Publication Date: 2011-05-10
- Inventor: Michael D. Ensign
- Applicant: Michael D. Ensign
- Applicant Address: US CA Carlsbad
- Assignee: Alphatec Spine, Inc.
- Current Assignee: Alphatec Spine, Inc.
- Current Assignee Address: US CA Carlsbad
- Agent Michael R. Shevlin
- Main IPC: B25B13/28
- IPC: B25B13/28 ; B25B23/10

Abstract:
A driver including a handle, lever, swivel cap, shaft, and a tip mechanically connected to the lever configured to engage a screw. Engaging the lever causes the tip to either compress or expand so as to lock the screw to the driver. According to one exemplary embodiment, the cap can be translated releasing the lever, thereby releasing the screw from the tip. According to one embodiment, the cap is a swivel cap allowing for jeweler style use. Advantages of the present system and method, according to various embodiments, include a tip compressing a feature that is within an outer diameter of the screw allowing a driver, or a portion thereof, to have a maximum diameter equal to or smaller than the maximum diameter of a screw.
Public/Granted literature
- US20090038446A1 Locking Screw Driver Handle Public/Granted day:2009-02-12
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