Patent ID: 8177535
Filing Date: 2012-05-15
Classification: F04C,Y10T

Abstract:
1. A method for restoring the registry of meshing pump teeth relative to one another in a polymer pump while said pump is not in operation and contains polymer, said meshing pump teeth being carried on opposed rotating shafts that cyclically move their opposing teeth into and out of meshing configuration, said registry being obtained without removal of said polymer from said pump and said teeth, said opposed shafts having at least one set of adjacent ends exposed outside said pump, providing in each of said adjacent shaft ends at least two apertures thereby forming a pattern of apertures in said adjacent shaft ends, said apertures being asymmetric relative to one another in at least one of said adjacent shaft ends, providing a template that is co-extensive with both said adjacent shaft ends and has a pattern of holes there through that match said pattern of apertures in said adjacent shaft ends, providing dowels that fit said apertures in said adjacent shaft ends and said holes in said template with a tolerance of not greater than about 0.001 of an inch, rotating said adjacent shafts relative to one another until said pattern of apertures in said shaft ends align with said pattern of holes in said template, passing said dowels through said template holes and into the interior of said apertures in said adjacent shaft ends thereby registering the timing of said shafts so that said pump teeth do not contact one another when said pump is put into operation.