Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 16, 2010
Patent Application Number
11579411
Date Filed
April 21, 2005
Patent Primary Examiner
Patent abstract
The invention relates to a signaling column with levels which are assembled by a relative pivoting limited in amplitude and interconnected by axially-extending conductors. The body of a level includes a locking bar which extends axially to penetrate an opening in an adjacent level and abuts an edge of the opening on a rotation attempt. The ends of the bar may be displaced and the opening is of such a size as to accommodate the top end of a relevant bar and the bottom end of the bar above.
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