Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 4967560 | Parking sustainer employing liquid pressure booster A parking sustainer which allows a vehicle to be maintained parked by continuing a braking action if the depression of a brake pedal is terminated. An open/close valve is disposed in a liquid pressure discharge passage usually provided in a liquid pressur... | 11/06/1990 |
| 4470280 | Swaging apparatus with timed pre-fill In an apparatus for forming leak-proof joints between tubes and a tube sheet by the internal application of hydraulic swaging pressure, the flow of relatively low pressure fluid from a pressure source to an intensifier is permitted or interrupted by a con... | 09/11/1984 |
| 4407150 | Apparatus for supplying and controlling hydraulic swaging pressure In an apparatus for forming leak-proof joints between tubes and a tube sheet by the internal application of hydraulic swaging pressure, the flow of pressurized fluid from an adjustable pressure reduction valve is permitted or interrupted by a control valv... | 10/04/1983 |
| 4197060 | Heat-powered water pump A heat-powered water pump including a flexible diaphragm as the pumping element with a volatile liquid as a working fluid. The flexible diaphragm is enclosed within a vessel and isolates the working fluid from the water to be pumped. One-way valves contro... | 04/08/1980 |
