| Patent Number |
Title Of Patent |
Date Issued |
| 6796777 |
Low power electromagnetic pump |
September 28, 2004 |
| An electromagnetic pump comprising an armature comprising a pole portion joined to a plunger portion, wherein the plunger portion comprises a one-piece structure including shaft portions of increasing diameters and a head portion comprising a diameter greater than the shaft portions, the |
| 6454548 |
Low power electromagnetic pump |
September 24, 2002 |
| An electromagnetic pump including a housing having an interior fluid containing region, a check valve operatively flow in a direction from an inlet toward an outlet and blocking fluid flow in a direction from the outlet to the inlet, an electromagnet carried by the housing located ex |
| 6264439 |
Low power electromagnetic pump |
July 24, 2001 |
| An electromagnetic pump including a housing having an interior fluid containing region, a check valve operatively associated with the fluid containing region for allowing fluid flow in a direction from an inlet toward an outlet and blocking fluid flow in a direction from the outlet to |
| 6227818 |
Low power electromagnetic pump |
May 8, 2001 |
| All electromagnetic pump comprising a housing having fluid receiving and pumping chambers in communication with an inlet and outlet, respectively, an electromagnet carried by the housing external to the fluid chambers thereof, and an armature movable in the housing having a pole portion |
| 6193477 |
Low power electromagnetic pump |
February 27, 2001 |
| All electromagnetic pump comprising a housing having fluid receiving and pumping chambers in communication with an inlet and outlet, respectively, an electromagnet carried by the housing external to the fluid chambers thereof, and an armature movable in the housing having a pole portion |
| 5915929 |
Low power electromagnetic pump |
June 29, 1999 |
| An electromagnetic pump having an electromagnet carried by the housing external to the fluid chambers, and an armature moveable in the housing having a pole magnetically attracted by the electromagnet and a piston to force fluid out of the chambers and through the pump outlet. A path |
| 5797733 |
Low power electromagnetic pump |
August 25, 1998 |
| An electromagnetic pump comprising a housing having fluid receiving and pumping chambers in communication with an inlet and outlet, respectively, an electromagnet carried by the housing external to the fluid chambers thereof, and an armature movable in the housing having a pole portion |
| 5368274 |
Low power electromagnetic valve |
November 29, 1994 |
| An electromagnetic valve comprising a housing having a fluid containing region and first and second ports in communication with the region, an electromagnet carried by the housing located external to the fluid containing region, and a thin diaphragm of fluid impermeable material whic |
| 4714234 |
Low power electromagnetic valve |
December 22, 1987 |
| An electromagnetic valve comprising a housing having fluid containing region and first and second ports in communication therewith, an electromagnet carried by the housing located external to the region, and a thin fluid impermeable diaphragm barrier hermetically isolating the electr |
| 4636150 |
Low power electromagnetic pump |
January 13, 1987 |
| An electromagnetic pump comprising a housing having a fluid receiving chamber in communication with an inlet, a pair of fluid chambers connected by a fluid bypass passage to accommodate bubbles, one in communication with the fluid receiving chamber and the other in communication with an |
| 4569641 |
Low power electromagnetic pump |
February 11, 1986 |
| An electromagnetic pump comprising a housing having fluid receiving and pumping chambers in communication with an inlet and an outlet, respectively, an electromagnet carried by the housing external to the fluid chambers, and a barrier in the form of a thin diaphragm of fluid impermea |
| 4568250 |
Low power electromagnetic pump |
February 4, 1986 |
| An electromagnetic pump comprising a housing having a fluid receiving chamber in communication with an inlet, a pair of serially-connected fluid pumping chambers, one in communication with the fluid receiving chamber and the other in communication with an outlet, an electromagnet carried |
