Metal coating of load bearing member for elevator system
AssigneeOtis Elevator Company
InventorsZhongfen Ding, Paul Papas, Aaron T. Nardi, Daniel A. Mosher, Brad Guilani
Life of this patent
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Abstract
A belt for an elevator system includes a plurality of tension members arranged along a belt width and a jacket material at least partially encapsulating the plurality of tension members defining a traction surface, a back surface opposite the traction surface together with the traction surface defining a belt thickness, and two end surfaces extending between the traction surface and the back surface defining the belt width. A metallic coating layer is applied via deposition of solid particles over at least one end surface of the two end surfaces.
Claims9
A method for forming a belt for an elevator system comprising:
- forming one or more tension elements;
- at least partially enclosing the one or more tension elements in a jacket material, the jacket material defining:
- a traction surface;
- a back surface opposite the traction surface together with the traction surface defining a belt thickness;
- and
- two end surfaces extending between the traction surface and the back surface defining the belt width;
- and
- applying a metallic coating layer via application of solid metal particles to at least one end surface of the two end surfaces after at least partially enclosing the one or more tension elements in the jacket material to improve fire retardation properties of the belt;
- wherein applying the metallic coating layer further comprises:
- urging a carrier gas flow through a nozzle;
- injecting a metallic powder material into the carrier gas flow;
- impacting the metallic powder on the at least one end surface;
- and
- adhering the metallic powder to the at least one end surface.
A method of forming a belt for an elevator system, comprising:
- continuously forming one or more tension elements;
- continuously extruding a jacket material around the one or more tension elements at least partially enclosing the one or more tension elements in the jacket material via an extruder, the jacket material defining:
- a traction surface;
- a back surface opposite the traction surface together with the traction surface defining a belt thickness;
- and
- two end surfaces extending between the traction surface and the back surface defining the belt width;
- and
- positioning one or more nozzles downstream of the extruder;
- urging the belt past the one or more nozzles;
- urging a carrier gas flow through the nozzle;
- injecting a metallic powder material into the carrier gas flow;
- impacting the metallic powder on at least one end surface;
- and
- adhering the metallic powder to the at least one end surface, forming a continuous metallic coating layer at the at least one end surface as the belt passes the one or more nozzles.
Dependencies are inferred from the claim text.