Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Long Khac Nguyen0
Date of Patent
September 27, 2016
Patent Application Number
12953543
Date Filed
November 24, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
A combination ER wrench is disclosed for use in installing and tightening collet holders in connection with milling machines or machining centers. The disclosed wrench combines the function of multiple wrenches. The disclosed wrench has two open ends and two box ends that fit various collets and collet holders common in the industry, along with a box end to fit a retention knob. The open ends of the wrench have arcurate jaws and five points to contact the collet and/or collet nut. The box ends of the wrench are openings shaped to contact the collect and/or collet nut.
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