Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 5567381 | Hybrid heat treating furnace A hybrid furnace includes a vacuum furnace for heat treating a workpiece and a transportable oven removably attached to the vacuum furnace for holding the workpiece and maintaining it at an elevated temperature. The workpiece is transferred from the vacuu... | 10/22/1996 |
| 5485985 | Method and apparatus for heat treating An apparatus for metallurgically heat treating a plurality of discrete individually movable aluminum alloy parts includes a plurality of successive stations for heat treating the parts. The plurality of stations are arranged in a line of travel. Infrared ... | 01/23/1996 |
| 5097114 | Low-voltage heating device A low-voltage electric heating device for application in a carburizing furnace is provided with an outer housing or sleeve for replaceable disposition within the furance, the outer housing radiating heat directly into said furnace; at least one current pa... | 03/17/1992 |
| 4428563 | Apparatus for spot annealing tubing In the manufacture of tubing, and particularly finned tubing, for use by the heat transfer industry in the manufacture of heat exchangers, annealed ends and lands are desirable in certain applications to facilitate the assembly of the tubes to headers and... | 01/31/1984 |
| 4245819 | Apparatus for stabilizing springs In a method of treating a coil spring to improve its performance and reliability when operating at elevated temperatures, the spring is first stressed by applying a load of preselected magnitude and then, while the load is maintained, the spring is heated... | 01/20/1981 |
| 4240616 | Apparatus for heat-treating metallic material In the heat treatment (quenching treatment, tempering treatment, etc.) of long metallic material, such as, large diameter steel pipe or the like, in order to stabilize the speed of travel of the material through a heat treating zone, i.e., a zone includin... | 12/23/1980 |
| 4234168 | Apparatus for producing low-oxygen iron-base metallic powder A process and an apparatus for producing low-oxygen iron-base metallic powder are disclosed. The low-oxygen iron-base metallic powder is produced by alloying and/or admixing iron-base metallic raw powder to be subjected to a final reduction, which has an ... | 11/18/1980 |
| 4222554 | Electric salt bath furnace In the art electric heat treat furnaces have a frame and an open top housing of refractory brick therein including a plurality of inner walls defining a chamber throughout its height adapted to receive a molten bath such as a salt bath into which metal pi... | 09/16/1980 |
| 3969154 | Catastrophic failure of metals 1. A method of inducing rapid failure in a shape that is under stress and is composed of cold rolled steel comprising applying against a surface of said cold rolled steel shape a mixture composed of lithium metal, lithium chloride and potassium chloride, ... | 07/13/1976 |
