Patent ID: 8156874

Claim:
A rail mounted displaceable device for a ceiling mounted hoist, comprising: a motor and at least two wheels arranged to run along a rail, wherein the displaceable device comprises at least one motion wheel and at least one carrying wheel, wherein said motion wheel is rotatably fixed on a hinged bracket which is pivotably connected via a hinge to a chassis, wherein said motion wheel rolls on a longitudinally extending running surface of the rail when an actionable pressing means presses the motion wheel against said running surface in order to allow a displacement of the device along the rail when the motor is activated, wherein said at least one carrying wheel is rotatably fixed on said chassis and able to rotate freely along the rail when said pressing means is deactivated, wherein the pressing means includes a solenoid unit having a portion connected to the chassis and a portion connected the hinged bracket in order to lift the hinged bracket and press the motion wheel against said running surface of the rail, wherein the chassis is a plate having a substantially constant thickness and an end portion arranged to be attached to said carrying wheels, and wherein the bracket has a substantially inverted U-profile having an opening on its upper portion, and wherein said end portion of the plate protrudes from said opening of said inverted U-profile.