Patent ID: 7726232

Claim:
A liner for a first pump housing in a fluid pump assembly, said fluid pump assembly including a first pump housing, a second pump housing and a flexible diaphragm disposed between said first and second pump housings, said first pump housing including a fluid access port for providing fluid communication between an inside housing chamber of said first pump housing and an outside of said first pump housing, said second pump housing securely mated to said first pump housing, said second pump housing including a biasing mechanism for selectively displacing a portion of said diaphragm toward said first pump housing, said liner comprising: a flexible member removeably secured inside said first pump housing, a first portion of said member shaped to substantially conform to the interior dimensions of said first inner chamber and a second portion of said member shaped to substantially conform to said fluid access port, said member forming an inner liner chamber inside said inside housing chamber, said member including a mating portion for securing said member to said diaphragm to form a seal there between, said inner liner chamber being in fluid communication with said portion of said diaphragm whereby said displacement of said portion of said diaphragm expels fluid from said inner liner chamber through said fluid access port.