Patent ID: 8658074

Claim:
A method of extruding an elastomeric coating onto a progressive cavity motor component having a profiled helical surface comprising: providing a component of a progressive cavity motor, wherein the component has a profiled helical surface; disposing a carriage with a cleaning module, an adhesive application module, an elastomer deposition module, and a curing module mounted thereto along the profiled helical surface, wherein each of the four modules is point focused or has an active surface that is fully disposed around the component; removing a pre-existing elastomeric coating by the cleaning module from a section of the profiled helical surface as the carriage is disposed along the profiled helical surface; applying an adhesive by the adhesive application module onto the section of the profiled helical surface where the pre-existing elastomeric coating has been previously removed by the cleaning module; extruding an elastomer through a gap formed between a template of the elastomer deposition module and the profiled helical surface onto the section of the profiled helical surface where the pre-existing elastomeric coating has been previously removed by the cleaning module and where the adhesive has been previously applied by the adhesive application module; and curing the elastomeric coating with the curing module on the section of the profiled helical surface where the cleaning, adhesive application, and elastomer deposition modules have previously removed the pre-existing elastomeric coating, applied the adhesive, and deposited the elastomeric coating, wherein each of the cleaning, adhesive application, elastomer deposition, and curing modules operates while the carriage is driven along the profiled helical surface.