Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 25, 2007
Patent Application Number
11034183
Date Filed
January 12, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
One embodiment of the invention provides a chalk line device having a helical gear and an improved locking assembly. The locking assembly comprises a first lock member having a lock button. The locking assembly also comprises a second lock member including an opening to lockingly engage the first lock member and having a plurality of teeth at one end disposed adjacent one of the helical gears used in this embodiment. The second lock member engages with the helical gear in response to a movement of the lock button member.
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