Patent ID: 6558141
Filing Date: 2003-05-06
Classification: F04B

Abstract:
A plunger for a reciprocating plunger pump, comprising:a plunger having a constant maximum diameter along its length and a driven end and a pumping end with an outer perimeter, said driven end and said pumping end being provided concentrically and integrally on said plunger; a first packing having at least one seal disposed around said driven end of said plunger; a second packing having at least one seal disposed around said pumping end of said plunger; and a securing member comprising, a first end attached to said pumping end of said plunger; and a second end having a flange with an outer perimeter greater than said outer perimeter of said pumping end of said plunger; wherein when said first end of said securing member is attached to said pumping end of said plunger, said second end maintains said at least one seal disposed around said pumping end of said plunger.