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 |
| 5938408 | Magnetically controlled liquid transfer system A compressed air-actuated pump includes a venturi nozzle (24) to create a vacuum condition within a fluid-tight pump body or chamber (8) to pump in a liquid or slurry from a remote location. When a given level of liquid is pumped in, a float mechanism (69... | 08/17/1999 |
| 5641271 | Float operated pump including diaphragm valve assembly with bleed passage Pump (1) includes a pneumatic valve assembly (98) having a chamber (105) which is supplied by compressed air via an inlet pipe. Included within chamber (105) is a valve (109) with a chamber (111) divided into two separate compartments (112,113) by a plian... | 06/24/1997 |
| 4321017 | Pneumatic ejector control For starting and stopping air injection, a pneumatic ejector for a liquid transport system typified by a municipal sewerage system is provided with an air release valve fitted with a limit switch as a control device.... | 03/23/1982 |
