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US 11,548,193 B2Granted
Method for producing a guiding rod for a pump
AssigneeSilgan Dispensing Systems Le Treport S.A.S.
InventorEric Rossignol
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for producing a guiding rod for a pump for dispensing a fluid product. The rod includes a cylindrical body surmounted by a head. The method a plastic injection molding step to form the cylindrical rod. The method also includes a step of correcting the shape of an upper end of the rod so as to form the head by creating a shoulder at the level of the junction between the head of rod and body.
Claims9
A method for producing a guide rod for a pump, comprising:
- injection molding a cylindrical guide rod comprising an upper end;
- providing a heading tool, comprising:
- a central axis;
- a heating surface;
- aligning the cylindrical guide rod along the central axis;
- moving the heading tool along the central axis until the heating surface comes into contact with the upper end of the cylindrical guide rod, wherein the heating surface exerts pressure on the upper end of the cylindrical guide rod;
- heating the upper end of the cylindrical guide rod until a portion melts forming a melted upper end portion;
- forming a head from the melted upper end portion;
- removing the heading tool;
- and
- cooling the head.
8 more elements
A method for producing a pump, comprising:
- injection molding an assembly comprising a rod and a support;
- providing a deformable membrane comprising a funnel opening at a top of a dome;
- inserting an upper end of the rod through the funnel opening until an end of the deformable membrane opposite the funnel rests on the support, the support and deformable membrane defining a pumping chamber;
- providing a heading tool, comprising:
- a central axis;
- a heating surface;
- aligning the upper end of the rod along the central axis;
- moving the heading tool along the central axis into contact with the upper end of the rod, wherein the heating surface exerts pressure on the upper end of the rod;
- heating the upper end of the rod until a portion of the rod melts forming a melted upper end portion;
- forming a head from the melted upper end portion;
- removing the heading tool;
- and
- cooling the head.
10 more elements
Dependencies are inferred from the claim text.