| 4897518 |
Method of monitoring induction heating cycle |
Jonathan W. Alexander, George D. Pfaffmann, Richard H. McKelvey |
1990-01-30 |
| 4894501 |
Method and apparatus for induction heating of gear teeth |
George D. Pfaffmann, Norbert R. Balzer, Donald E. Novorsky |
1990-01-16 |
| 4855551 |
Method and apparatus for hardening gears |
George D. Pfaffmann, Donald E. Novorsky |
1989-08-08 |
| 4855556 |
Method and apparatus for hardening gears and similar workpieces |
Donald E. Novorsky, George D. Pfaffmann |
1989-08-08 |
| 4816633 |
Method of monitoring induction heating cycle |
Jonathan W. Alexander, George D. Pfaffmann, Richard H. McKelvey |
1989-03-28 |
| 4785147 |
System for hardening gears by induction heating |
George D. Pfaffmann, Donald E. Novorsky |
1988-11-15 |
| 4757170 |
Method and apparatus for induction heating gears and similar workpieces |
Donald E. Novorsky, George D. Pfaffmann |
1988-07-12 |
| 4749834 |
Method and apparatus of hardening gears by induction heating |
George D. Pfaffmann, Donald E. Novorsky |
1988-06-07 |
| 4728761 |
Method and apparatus for hardening axially spaced cams on a camshaft |
John R. Laughlin, William Z. Nelson, Robert C. Johnson |
1988-03-01 |
| 4675488 |
Method for hardening gears by induction heating |
Donald E. Novorsky, George D. Pfaffmann |
1987-06-23 |
| 4625090 |
Apparatus for inductively heat treating workpiece bore walls |
George D. Pfaffmann |
1986-11-25 |
| 4604510 |
Method and apparatus for heat treating camshafts |
John R. Laughlin |
1986-08-05 |
| 4531987 |
Method for inductively heat treating workpiece bore walls |
George D. Pfaffmann |
1985-07-30 |