The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2011
Filed:
May. 10, 2010
Tadashi Akita, Kawasaki, JP;
Tadashi Akita, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
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.