Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 5509449 | Control of fluids Water pressure in various branches of an irrigation system is controlled by incorporating a butterfly valve in each branch. Each valve is connected to its own piston-cylinder hydraulic assembly. Elongation of the assembly urges the valve toward closure. S... | 04/23/1996 |
| 4344491 | Apparatus for actuating downhole flow control valves A method and apparatus is provided for actuating downhole flow control valves in a borehole mining tool to change the tool function from drilling to mining while still in the borehole. Self-activating actuators employing only system pump pressure control ... | 08/17/1982 |
