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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 5656106 | Apparatus and method for net shape finishing of gears An apparatus is disclosed for performing thermomechanical processing of gears in which precise control of the thermal, metallurgical and mechanical action during the forming process is maintained. The apparatus comprises an induction heating system which ... | 08/12/1997 |
| 5473960 | Steering rack shaft and method of manufacturing the same A steering rack shaft having a shaft body and rack teeth formed in a predetermined axial region of the shaft body. This steering rack shaft is formed such that a workpiece is quenched, and is then heated for a predetermined time at a temperature exceeding... | 12/12/1995 |
| 5414246 | Apparatus for scaleless induction heating A method and apparatus for carrying out scaleless inductive heating of ferrous parts comprising (i) using an integrated manifold-inductor quenchant device, and while gradually flowing a diluted combustible gas into the spacing between the inductor and par... | 05/09/1995 |
| 5234201 | Contour hardening apparatus A contour hardening apparatus for flat steel work pieces, such as gears, having convoluted surfaces around their circumferences, the apparatus including an annular inductor housing, a mandrel in the center of the inductor housing, and air bearing rotatabl... | 08/10/1993 |
| 5221513 | Apparatus and method for net shape finishing of gears An apparatus is disclosed for performing thermomechanical processing of gears in which precise control of the thermal, metallurgical and mechanical action during the forming process is maintained. The apparatus comprises an induction heating system which ... | 06/22/1993 |
| 5213636 | Method and apparatus of quench hardening of gear teeth surfaces A method for induction heating and quench hardening of helical gears provides a hardness pattern uniformly distributed to a controlled depth across and between the teeth surfaces by means of axial scanning of the workpiece and uniform quenching. Uniform q... | 05/25/1993 |
| 5157231 | Apparatus for inductive hardening crankshafts with crank pins having a hollow ground radius A method for the inductive hardening of working surfaces and transition radii on crankshafts in which, to receive connecting rods, crank pins are disposed directly one after another at different angular attitudes in planes at right-angles to the axis of r... | 10/20/1992 |
| 5134264 | Device for the inductive heating of the inside of cylinder liners of reciprocating-piston engines for the purpose of hardening A device for induction heating of the inside of cylinder liners of reciprocating-piston engines to a transformation temperature, for the purpose of hardening. An inductor head is equipper with an aligning device designed as a spreadable cage which is equi... | 07/28/1992 |
| 5124517 | Method of induction-hardening machine components An induction-hardening machine for the contour hardening of cross-axis, intersecting-axis and nonintersecting-axis gears such as hypoid gears includes a programmable logic control unit, a source of quench liquid and a high-frequency induction generator wh... | 06/23/1992 |
| 4894501 | Method and apparatus for induction heating of gear teeth A method and apparatus for induction heating and quench hardening of an undulating cylindrical surface, such as that defined by gear or sprocket teeth, provide a hardness pattern uniformly distributed to a controlled depth across and between the teeth sur... | 01/16/1990 |
| 4855556 | Method and apparatus for hardening gears and similar workpieces A method and apparatus for progressively hardening an elongated workpiece having an outer generally cylindrical surface concentric with the central axis including the concept of providing closely spaced first and second induction heating coils each having... | 08/08/1989 |
| 4855551 | Method and apparatus for hardening gears Method and apparatus for hardening the outwardly facing teeth surfaces of a gear is disclosed. First and second induction heating coils with power sources controlled by an appropriate microprocessor preheat the gear when in the first coil at precisely con... | 08/08/1989 |
| 4845328 | Apparatus for and method of induction-hardening machine components An induction-hardening machine for the contour hardening of machine components such as gears includes a machine with both high-frequency and low-frequency induction generators operably arranged with corresponding induction coils positioned at a machine wo... | 07/04/1989 |
| 4785147 | System for hardening gears by induction heating An apparatus for hardening the outwardly facing teeth surfaces of a gear is disclosed. First and second induction heating coils with power sources controlled by an appropriate microprocessor heat the gear when in the first coil at a precisely controlled c... | 11/15/1988 |
| 4757170 | Method and apparatus for induction heating gears and similar workpieces A method and apparatus for progressively hardening an elongated workpiece having an outer generally cylindrical surface concentric with the central axis including the concept of providing closely spaced first and second induction heating coils each having... | 07/12/1988 |
| 4675488 | Method for hardening gears by induction heating A method of hardening the radially, outwardly facing surfaces of a generally circular, toothed workpiece adapted to rotate about a central axis generally concentric with the outwardly facing surfaces whereby the extremities of the surfaces define an outer... | 06/23/1987 |
| 4618125 | System for hardening camshafts A camshaft heat treating apparatus for processing a plurality of camshaft designs, which camshaft identifies and thereafter automatically inductively heats, quenches and inspects the camshaft in accordance with its design parameters.... | 10/21/1986 |
| 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 |
| 4251705 | Inductor for hardening gear teeth An inductor for heating the circumferentially opposed working surfaces and the root surface between adjacent gear teeth includes a nose portion received between the adjacent teeth and having a profile corresponding to that of the working and root surfaces... | 02/17/1981 |
| 4251704 | Unit for induction heating and hardening gear teeth An induction heating unit is disclosed which is operable to inductively heat and harden teeth on circumferentially extending radially thin flange segments of a gear. The unit includes an inductor conforming in circumferential contour and length to the fla... | 02/17/1981 |
| 4194728 | Apparatus for the inductive hardening by quenching of bearing surfaces of a crankshaft An apparatus for inductively hardening by quenching of the running surface of bearings of a crankshaft in which the crankshafts are transported by a lifter-conveyor system to a clamp which grips the crankshaft and is pivoted about a lever arm pivotably mo... | 03/25/1980 |
| 4123644 | Device for inductively heating cylindrical surfaces A device for inductively heating a cylindrical metal surface on an elongated workpiece having a central rotational axis, wherein the cylindrical surface is generally concentric with the axis. The device comprises an inductor having a generally cylindrical... | 10/31/1978 |
| 4100387 | Apparatus for the inductive heating of workpieces especially for the heating of cam shafts An apparatus for surface hardening an irregularly shaped workpiece made of hardenable material by inductive heating whereby a clamped workpiece is rotated past a linear conductor disposed along the envelope circle formed by the cam of the workpiece which ... | 07/11/1978 |
| 4057230 | Die quench machine and method The invention is concerned with a horizontally closing die quenching apparatus and with a method for die quenching. The apparatus comprises a pair of relatively movable opposed substantially vertical platens each supporting a plurality of die blocks, the ... | 11/08/1977 |
