Pumps – Motor driven – Fluid motor
Reexamination Certificate
2005-03-09
2008-10-21
Kramer, Devon C (Department: 3746)
Pumps
Motor driven
Fluid motor
C417S403000
Reexamination Certificate
active
07438537
ABSTRACT:
A liquid additive injection pump for injecting a predetermined amount of a secondary fluid into a primary fluid stream wherein a fluid mixing chamber is disposed within the pump housing assembly. A gasket having at least one one-way valve is positioned between the pump assembly components and mixing chamber thereby allowing a primary fluid to pass through the pump assembly and into the mixing chamber where the introduction of a second fluid occurs. The mixed fluids are then discharged through an outlet. The one-way valve gasket assembly acts to prevent the mixed and/or secondary fluid from passing upstream of the gasket assembly and into the pump assembly.
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Cahoon Colin P.
Carstens & Cahoon LLP
Dosmatic USA, Inc.
Hamo Patrick
Kramer Devon C
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