Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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 |
| 7704053 | Pivoting mechanism for use in a high temperature steam distribution system A pivoting mechanism for use in a high temperature steam distribution system includes an input member operative to move between a low level position and a high level position. A compression spring having a first end and a second end is also provided. The first end o... | 04/27/2010 |
| 7520731 | Gas pressure driven pump having dual pump mechanisms The present invention is directed to a gas pressure driven liquid pump having a pump body, liquid inlet, liquid outlet, a pair of pump mechanisms each including a float, and a baffle within the pump body creating two chambers within the pump body. A separate pump me... | 04/21/2009 |
| 7421908 | Electromagnetic flow sensing apparatus and method An apparatus for sensing liquid flow rate comprises a conduit for conducting a flow of liquid through it and a flow sensor. The flow sensor includes a fixed portion attached to a sidewall of the conduit. The fixed portion has a pair of stationary electrodes position... | 09/09/2008 |
| 7316241 | Steam trap A steam trap comprises a trap body having an inlet and an outlet each defining inner threads. The trap body further includes a spigot defining external threads. Also provided is a cap defining internal threads for engaging the external threads of the spigot of the t... | 01/08/2008 |
| 7070394 | Gas pressure driven fluid pump having pilot valve controlling disc-type motive and exhaust valves A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve is operatively c... | 07/04/2006 |
| 7048513 | Gas pressure driven fluid pump having compression spring pivot mechanism and damping system A gas pressure driven fluid pump having a pump tank with a liquid inlet and a liquid outlet. A float assembly is carried within the interior of the pump tank and is movable between a low level position and a high level position. A compression spring is connected bet... | 05/23/2006 |
| 7004728 | Gas pressure driven fluid pump having an electronic cycle counter and method A gas pressure driven fluid pump having an electronic cycle counter. The pump has a pump tank with a liquid inlet and a liquid outlet. A switching mechanism is operative within the pump tank for switching to exhaust porting when the fluid level within the pump tank ... | 02/28/2006 |
| 6935844 | Gas pressure driven fluid pump having magnetic valve control mechanism and method A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve control mechanis... | 08/30/2005 |
| 6808370 | Gas pressure driven tank fluid pump having float and snap-acting rotary valve A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve is operatively c... | 10/26/2004 |
