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 |
| 6776854 | Process and apparatus for the partial thermochemical vacuum treatment of metallic workpieces In the partial thermochemical vacuum treatment of metallic workpieces (1), in particular in the carburization and case hardening of workpieces (1) of case-hardening steel in a carbon-containing atmosphere, surface regions (3, 4, 5, 6) to be trea... | 08/17/2004 |
| 6702980 | Annealing apparatus An apparatus is disclosed for annealing only a portion of an elongated tubular workpiece. The apparatus includes an elongated tube dimensioned to receive the workpiece so that a first end of the workpiece together with the portion to be annealed is positi... | 03/09/2004 |
| 6660110 | Heat treatment devices and method of operation thereof to produce dual microstructure superalloy disks A heat treatment assembly and heat treatment methods are disclosed for producing different microstructures in the bore and rim portions of nickel-based superalloy disks, particularly suited for gas turbine applications. The heat treatment assembly is capa... | 12/09/2003 |
| 6638379 | Method and device for hardening bearing surfaces of crankshafts This invention relates to a procedure for hardening the bearing surfaces (H1,H2,H3,H4) of a shaft or axle, in particular a crankshaft (2) or camshaft, in which the bearing surfaces (H1-H4) to be hardened are hardened sequentially with the shaft or axle tu... | 10/28/2003 |
| 6632302 | Method and means for heat treating cutting tools Apparatus for heat treating a cutting tool comprises a furnace and a tool holder within the furnace adapted to receive therein a first portion of the tool, a second portion of the tool projecting from the tool holder, the second portion of the tool being ... | 10/14/2003 |
| 6394793 | Method and apparatus of cooling heat-treated work pieces A method and apparatus for cooling heat-treated metallic work pieces, particularly jet engine components that are normally round in shape, have a complex radial cross-section, and are subject to subsequent machining steps, includes a set of concentric air... | 05/28/2002 |
| 5527020 | Differentially heat treated article, and apparatus and process for the manufacture thereof Apparatus for differentially heat treating a turbine disk of a gas turbine engine so as to produce a dual property superalloy disk. The apparatus enables a process to achieve substantially uniform yet different temperatures in the rim and hub of the disk ... | 06/18/1996 |
| 5452882 | Apparatus for quenching metallic ring-shaped workpieces For quenching heated metallic work pieces with a quenching intensity that lies in the region of H values from 0.2 to 4, which is typical for oil or water quenching, a cooling gas is used as the quenching medium in the form of discrete jet streams issuing ... | 09/26/1995 |
| 5360203 | Floatation pressure pad for metal strips A pressure pad comprises a plenum chamber, adapted to be conneceted to a pressurized-fluid supply means, having a pair of parallel slit nozzles formed in a top wall, and the chamber is arranged underneath a path of a strip. The plenum chamber is provided ... | 11/01/1994 |
| 5226968 | Apparatus and method for oxidation treatment of metal A metal oxidation treatment apparatus to form the passivation film on the surface of the metal to be oxidized such as stainless steel or the like, comprising an oxidation furnace, a gas inlet to introduce gas into said oxidation furnace, a discharge outle... | 07/13/1993 |
| 5224998 | Apparatus for oxidation treatment of metal A metal oxidation treatment apparatus to form the passivation film on the surface of the metal to be oxidized such as stainless steel or the like, comprising an oxidation furnace, a gas inlet to introduce gas into said oxidation furnace, a discharge outle... | 07/06/1993 |
| 5052923 | Oven for partial heat treatment of tools An oven for the partial heat treatment of tools, for example, twist drills, omprises a first section, which contains the heating chamber that is constantly at the desired operating temperature. A second section for the loading and unloading and the quenchi... | 10/01/1991 |
| 4978109 | Unitary construction multideck tray device for heat treatment of shafts or like members A device for heat treatment of shafts or like members in a vertical position comprises a unitary construction tray. This includes an upper deck formed with support holes, optionally on a plurality of alternate levels. These holes support and center a lowe... | 12/18/1990 |
| 4938460 | Apparatus for air quenching railway heads Air quenching apparatus develops a pearlite microstructure in the head of a longitudinally travelling railroad rail as it travels under the apparatus. A primary air chamber at a controlled pressure provides air to the top and side surfaces of the rail hea... | 07/03/1990 |
| 4701127 | Controlled atmosphere capsule for fluxless brazing A controlled environment capsule for fluxless brazing comprising an open-bottom box, an end-plate and a foil gasket sealing means. Diffusion plates are disposed within the interior of the box and connected to an external source of inert gas. The inert gas... | 10/20/1987 |
| 4572749 | Method and an apparatus for heat treatment of a workpiece A method and an apparatus for the heat treatment of a workpiece, particularly an outer race member of a universal joint, having a cavity formed therein. The apparatus includes a horizontally disposed base and at least one elongated vertically disposed pos... | 02/25/1986 |
| 4394195 | Cooling of center plate to avoid softening In accordance with the invention, an insulating box (32) is applied to the depending portion (28) of the center plate (24) of a railway freight car. This box is provided with external insulation (27) and a cooling medium such as air or water is passed thr... | 07/19/1983 |
| 4355790 | Heat-treatment device for prolonging the life of a pressure vessel such as a reactor pressure vessel especially Heat-treating device for prolonging the life of a pressure vessel formed of thermally resistant material subject to time-dependent structural changes due to neutron fluence includes a heating device positionable within a pressure vessel adjacent to a wall... | 10/26/1982 |
| 4326897 | Post weld heat treatment of shell and tube heat exchangers and apparatus An apparatus and method is provided for heat treating a tubular type heat exchanger. A heat fluid is passed through the tube bundle in order to heat the exchanger from within.... | 04/27/1982 |
| 4221972 | Apparatus for the partial treatment of elongated articles by current intensive glow discharge An outer receptacle has at least one opening for receiving an elongated article to be treated and an inner metal container, within the receptacle, is arranged to around only that portion of the article that is to receive treatment. An electrode in and ins... | 09/09/1980 |
| 4160543 | Heat treatment of welds Apparatus for heat treating the weld and heat affected zone between a steel pipe and a steel connector, the apparatus including an induction coil to heat the weld and weld heat affected zone to a selected temperature. A ring shaped manifold having nozzle ... | 07/10/1979 |
| 4093842 | Ported engine cylinder with selectively hardened bore Selective laser case hardening is applied to the blended port relief area of the bore of a cast iron, water jacketed, engine cylinder liner to provide improved resistance to scuffing resulting from the rubbing contact of the walls and piston rings of an a... | 06/06/1978 |
