Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 6228142 | Apparatus for keeping optimal penetration depth formed at front end of oxygen tuyere and method for keeping the same An apparatus for keeping an optimal penetration depth formed at the front end of an oxygen tuyere in the producing facilities of molten pig iron utilizing non-coking coal and a method for keeping the same. A sensor for measuring distance using a laser for... | 05/08/2001 |
| 5557631 | Sonic furnace monitoring apparatus Apparatus and method for obtaining accurate sonic input data from a metallurgical furnace, for accomplishing accurate control of a lance injecting oxygen and/or other substances into the melt. A remotely located hydrophone is placed in sonic communication... | 09/17/1996 |
| 4530102 | Lancing in electric arc steelmaking A method of controlling the depth of immersion of an oxygen lance in a molten bath within an electric arc furnace where noise emitted from the furnace during lancing in an acoustic spectrum ranging between 1 kHz and 15 kHz defined by a plurality of select... | 07/16/1985 |
| 4247086 | Lance hoisting and skull detecting apparatus for basic oxygen steelmaking furnaces A pair of cables are employed to raise and lower the lance of a basic oxygen steelmaking furnace. A centrally suspended equalizer bar is connected between the cables and a load detector is connected to the bar to sense the weight of a lance being hoisted.... | 01/27/1981 |
| 4219814 | Scanning radar A radar, such as a ranging radar, includes a non-scanning antenna which directs a beam of microwave energy toward and receives a return beam from a microwave reflector. A microwave reflector is mounted to a movable platform. As the platform moves, the mic... | 08/26/1980 |
| 4166609 | Device for detecting surface level of scum in scum removing apparatus In a scum removing apparatus including a suction source, a suction pipe having one end communicating with the suction source and the other free end positioned above the surface of scum to suck the scum and apply water to the sucked scum in the vicinity of... | 09/04/1979 |
| 4065298 | Steel making process by oxygen top-blown converter In a steel making process with an oxygen top-blown converter when a certain inclining angle (θ) is given within a range of 0 | 12/27/1977 |
