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 |
| 5407744 | Method for producing steel wires intended for the manufacture of flexible conduits, steel wires obtained by this method, and flexible conduits reinforced by such wires A method of producing steel wires intended for the manufacture of flexible conduits, steel wires obtained by this method, and flexible conduits reinforced by such wires is characterized by the fact that, for a given strain-hardening rate of the initial wi... | 04/18/1995 |
| 5139579 | Method for preparing high silicon, low carbon austempered cast iron A method for preparing an austempered cast iron which includes an ausferritic matrix, the cast iron having a silicon content of from about 1.6 to about 2.4 weight percent, and a carbon content of from about 1.6 to about 2.2 weight percent, such that the c... | 08/18/1992 |
| 5043028 | High silicon, low carbon austemperable cast iron An austemperable cast iron which includes an ausferritic matrix, the cast iron having a silicon content of from about 1.6 to about 2.4 weight percent, and a carbon content of from about 1.6 to about 2.2 weight percent, such that the carbon equivalent of t... | 08/27/1991 |
| 4432793 | Ferroalloy for the treatment of cast metals and process A ferroalloy for the treatment by inoculation of cast iron with spheroidal graphite comprises from 0.005 to 3% by weight of at least one metal of the rare earth group and from 0.05 to 3% by weight of at least one element taken from the group comprising bi... | 02/21/1984 |
| 4363661 | Method for increasing mechanical properties in ductile iron by alloy additions A method is disclosed of making as-cast ductile iron wherein an iron melt having a chemistry capable of forming gray iron having flake graphite is treated with a nodularizing agent and solidified to provide a microstructure consisting substantially of a p... | 12/14/1982 |
| 4236944 | Cast iron especially suited for ingot molds This is provided an ingot mold formed of a cast iron consisting essentially of 3.7 to 4.0% C, not more than 1.6% Si, 0.40 to 0.80% Mn, 0.10 to 0.45% P, not more than 0.10% S, 0.020 to 0.050% Mg, the balance Fe with normally appearing impurities. The eleme... | 12/02/1980 |
| 4099994 | High duty ductile case iron and its heat treatment method A ductile cast iron having a high tensile strength as well as a high elongation due to its matrix structure of finely mixed ferrite and pearlite grains obtained by the heat treatment. The material is pearlitic ductile cast iron and may be of ordinary duct... | 07/11/1978 |
| 4096002 | High duty ductile cast iron with superplasticity and its heat treatment methods A spheroidal graphite cast iron containing some carbide stabilizing elements to have the maximum strain rate sensitivity factor of more than 0.3 and having very refined grain matrix structure, so that having an improved toughness at room temperature and h... | 06/20/1978 |
| 4033766 | Continuous stream treatment of ductile iron A method and apparatus for producing modified grey iron, and particularly nodular cast iron, is disclosed. The apparatus comprises refractory elements including an inclined flow course for continuous reception of molten grey iron, a V-shaped inclined rece... | 07/05/1977 |
| 3998664 | Cast iron A heat treated cast iron wherein the carbon and silicon contents are controlled to produce a white iron as cast in a sand mold and the sulfur content is in excess of that required to combine with all the manganese in the iron. The iron is annealed to prod... | 12/21/1976 |
| 3961994 | Manufacture of grinding members of ferrous alloys Forged grinding members and a method for their manufacture from white cast iron having a high chromium content comprising heating a bar of white cast iron of 1.5% to 3% by weight carbon, 8 to 25% by weight chromium, 0% to 2% by weight molybdenum at a temp... | 06/08/1976 |
| 3955973 | Process of making nodular iron and after-treating alloy utilized therein An improvement in a process for making nodular iron is disclosed. Prior to casting, an iron melt which has previously been contacted with a graphite-spheroidizing agent is further contacted with an after-treating alloy agent containing from about 0.8 to a... | 05/11/1976 |
