Patent ID: 8590456

Claim:
A rail system ( 9 ) for an overhead hoist system ( 1 ) suspended from the rail system ( 9 ), and wherein the rail system ( 9 ) includes a primary rail ( 7 ) which is a four-edged profile with a hollow cross-section ( 17 ) and a longitudinal slot ( 18 ) at the bottom, at which the slot ( 18 ) and the hollow cross-section ( 17 ) are adapted for receiving and supporting part of the suspended hoist system ( 1 ), characterized in that the rail system ( 1 ) includes at least one angular secondary rail ( 19 ) which on a first leg ( 20 ) thereof is provided with a first connecting means ( 21 ) that interact with a second connecting means ( 22 ) at the side of the primary rail ( 7 ), and which on a second leg ( 23 ) is provided a support surface ( 24 ) for supporting an adjacent ceiling board ( 25 ); wherein the secondary rail ( 19 ) has a first mounting position ( 29 ) with an underside ( 34 ) largely in the same plane as an underside ( 35 ) of the primary rail characterized in that the secondary rail ( 19 ) has a second mounting position ( 30 ) in which the underside ( 34 ) of the secondary rail is in a plane which is above the underside ( 35 ) of the primary rail.