Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7175384 | Centrifugal pump A centrifugal pump, the impeller (2) of the pump having one or more holes through the impeller adjacent to its hub. The hole or holes (7) are positioned between the vanes (3) of the impeller and closer to the hub than the periphery of the impell... | 02/13/2007 |
| 6464454 | Centrifugal pump A centrifugal pump pumps fluid containing large or long objects of solid material. Solid parts cause problems with centrifugal pumps in that they both stick to the edge of the vanes of the pump wheel and get in between the pump wheel and the housing and s... | 10/15/2002 |
| 6058776 | Conductivity metering device The present invention is for a conductivity metering device. The invention is primarily for conductivity meters which are used for level gauging of fouled liquids where the fouling materials may cause functioning problems of the metering probe. The probe ... | 05/09/2000 |
| 5984626 | Evacuation means for pumps The present invention is for an evacuation system which preferrably in its entirety is connected to and operates at the outlet side of a pump. The evacuation system is connected to the socket 5 by the connector 9 and one of the valves 15 or 16. In the eva... | 11/16/1999 |
| 5649449 | Method and apparatus for determining the instantaneous operation conditions of a centrifugal pump In the disclosed method of determining the current or instantaneous operating conditions of a centrifugal pump, the radial forces impressed on the impeller shaft by the operatively rotating pump impeller are measured at a shaft-supporting bearing disposed... | 07/22/1997 |
