Celebrity Inventors
Actress Jamie Lee Curtis is a patented inventor - she created a diaper equipped with a premoistened baby wipe. And that's no act!
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 |
| 6666270 | Reciprocating pump vent-dump valve and methods of use A reciprocating pump vent-dump and methods of use for utilization in the hydrocarbon industry. The device is preferably used with barrel pumps although it may be used with tubing pumps. The device is positioned at the bottom of the wellbore immediately ab... | 12/23/2003 |
| 6347668 | Relievable check valve assembly for oil wells and water wells A relievable check valve assembly having various trigger forms for oil wells and water wells adapted to control the liquid flow when inserted tubing is being removed from a well.... | 02/19/2002 |
| 5782303 | Method and apparatus for draining fluids from tubing An apparatus which includes an external housing (10) and a slotted internal sleeve (26) machined from cylindrical lengths of hollow metal pipe stock, and one or more partially-hollowed-out plug screws (16). This apparatus uses no seals or O-rings. The app... | 07/21/1998 |
| 4909326 | Tubing unloader A tubing unloader including first and second housing sections adapted to be telescopingly mounted in each other and movable between open and closed positions by means of a J-slot assembly wherein an actuator pin for the J-slot includes an actuator portion... | 03/20/1990 |
| 4637471 | Tubing drain valve useful with heavy, sand-bearing oil The present invention is directed to an apparatus and method for providing a tubing drain valve suitable for use in a borehole. The present invention is particularly useful in connection with production strings employed in wells producing heavy, sand-bear... | 01/20/1987 |
