Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Threaded fastener stress
Reexamination Certificate
2011-06-28
2011-06-28
Kirkland, III, Freddie (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Threaded fastener stress
C073S862230
Reexamination Certificate
active
07966888
ABSTRACT:
A screw fastener includes a first screwdriver including a first bit configured to fasten a first screw by engaging with a recess of the first screw, and a first motor configured to rotate the first bit, a second screwdriver including a second bit configured to fasten a first screw by engaging with a recess of the second screw, and a second motor configured to rotate the second bit, an elevator unit configured to simultaneously ascend and descend both the first screwdriver and the second screwdriver, and a controller configured to control the first motor and the second motor so that seating of the first screw can start after torquing-up of the second screw starts.
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International Search Report of PCT/JP2007/071915, mailing date of Dec. 4, 2007.
Fujitsu Limited
Kirkland, III Freddie
Westerman Hattori Daniels & Adrian LLP
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