Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7337761 | Fuel system A fuel system comprises a spill valve 38 operable to relieve the fuel pressure differential across at least one positive displacement pump 16, 18, a shut-off valve 32 operable to control the supply of fuel to an engine 84, and a two stage... | 03/04/2008 |
| 5762104 | Liquid pumping system with pressure relief mechanism This disclosure relates to a system for pumping a liquid from a storage tank, through a pipe and out of a valve of a liquid dispenser. The apparatus comprises a manifold housing having a main flow passage formed therein, a check valve mounted in said main... | 06/09/1998 |
| 5308583 | Liquid supplying device for use in physical and chemical apparatus A liquid supplying device has liquid supplying piston pumps driven by turns for drawing up liquids contained in chemical vessels through liquid intake passages and sending out the liquids to an analyzer or other inspection apparatus through liquid outlet ... | 05/03/1994 |
| 4856756 | Well bottom release valve A valve assembly for draining water from a well pipe to facilitate the flushing of the pipe or to reduce its weight when removing the pipe from the well without separating the components of the pumping system which are all securely connected. The valve as... | 08/15/1989 |
| 4595061 | Deep well pipe water release valve A hollow T-shaped fitting is provided including a vertically straight first leg open at its upper and lower ends and a second horizontal lateral leg opening into and outwardly away from an intermediate height portion of the first leg. The outer end of the... | 06/17/1986 |
