Patent ID: 6033196
Filing Date: 2000-03-07
Classification: F04C

Abstract:
A pump comprising:a housing comprising a case comprising a first open end connected to a mounting bracket and a second open end connected to an access head with a pump chamber disposed therebetween,the mounting bracket accommodating a seal head that extends through the mounting bracket and through the first open end of the case, the seal head accommodating a rotor shaft that passes through the seal head, the pump chamber and into the access head,the rotor shaft being connected to a rotor disposed inside the pump chamber between first and second opposing side plates, the first side plate being disposed between the rotor and the seal head, the second side plate being disposed between the rotor and the access head,the rotor shaft being supported by a first bearing disposed outside of the pump chamber and between the seal head and the rotor shaft and adjacent to the first side plate, the rotor shaft also being supported by a second bearing disposed outside of the pump chamber and between the access head and the rotor shaft and adjacent to the second side plate,the first side plate, in combination with the seal head, providing fluid communication between the pump chamber and the first rotor bearing, andthe second side plate, in combination with the access head, providing fluid communication between the pump chamber and the second rotor bearing.