Patent ID: 7698828
Filing Date: 2010-04-20
Classification: B43L

Abstract:
1. A safety rule comprising: a rectangular rule body having two long sides and two short sides, said rectangular rule body having a stop flange protruded from and extending along one of said long sides, an elongated raised portion protruded from a top wall of said rule body and disposed adjacent to and in parallel relative to said longitudinal stop flange, a longitudinal coupling groove defined in between said elongated raised portion and said longitudinal stop flange and extending along a length of said rule body, said longitudinal coupling groove having an open side, and a recessed positioning portion defined in said longitudinal coupling groove; and a protective plate having a cylindrical coupling rib formed integral with and extending along one of said long sides of said rule body and forced through said open side into said longitudinal coupling groove to pivotally secure said protective plate to said rule body for enabling said protective plate to be turned relative to said rule body between a collapsed position and a lifted position, and a positioning protrusion protruded from a periphery of said cylindrical coupling rib for stopping at a top side of said elongated raised portion to hold said protective plate in a lifted position; wherein said protective plate can be turned relative to said rule body between a collapsed position where said protective plate is closely attached to a top wall of said rule body and said positioning protrusion is forced into engagement with said recessed positioning portion and a lifted position where said protective plate is abutted against a top side of said elongated raised portion to hold said protective plate in said lifted position.