Patent ID: 8876498
Filing Date: 2014-11-04
Classification: F04B,F04C

Abstract:
1. A pump-head, comprising: a pump housing comprising a discrete first housing portion and a discrete second housing portion that, when attached together, define a pump-cavity and a magnet-cavity in hydraulic communication with the pump-cavity, the pump-cavity containing at least one movable pumping element, the magnet-cavity containing a driven magnet that is coupled to the movable pumping element and magnetically coupled to a moving magnetic field produced outside the pump housing, wherein movement of the magnetic field causes corresponding movement of the driven magnet, which causes corresponding motion of the pumping element in the pump-cavity in a manner resulting in a pumped flow of liquid through the pump-cavity; the first housing portion having a first circumferential threaded region; the second housing portion comprising inlet and outlet ports in hydraulic communication with the pump-cavity, the second housing portion defining at least a portion of the magnet-cavity and at least a portion of the pump-cavity, the second housing portion having a second circumferential threaded region that is complementary to the first circumferential threaded region so that the first and second housing portions are attachable together by one of the housing portions being threaded to the other housing portion to form the pump housing, and the housing portions when unthreaded from each other allowing the at least one pumping element to be carried away with the detached first housing portion, thereby providing access to the at least one pumping element without disturbing the second housing portion.