Inductively-hardened steel components containing an oil duct
Abstract
Abstract INDUCTIVELY-HARDENED STEEL COMPONENTS CONTAINING AN OIL DUCT EXTENDING OBLIQUELY FROM A HARDENED SURFACE THEREOF, E.G., CRANKSHAFTS, TEND TO WEAR AT THE POINT WHERE THE OIL DUCT MEETS THE SAID HARDENED SURFACE. THE INVENTION PROVIDES MEANS WHEREBY THE WEAR IS REDUCED, COMPRISING A SUPPLEMENTARY OPENING EXTENDING FROM THE HARDENED SURFACE TO THE OIL DUCT ON THE SIDE OF THE OIL DUCT WHICH MAKES AN OBLIQUE ANGLE WITH THE HARDENED SURFACE. IN ONE EMBODIMENT OF THE INVENTION THE SUPPLEMENTARY OPENING CONSISTS OF A SLOT EXTENDING FROM THE OIL DUCT, AND IN ANOTHER EMIBODIMENT THE SUPPLEMENTARY OPENING CONSISTS OF A BORE EXTENDING TO THE SAID OIL DUCT. WHERE TWO OR MORE OIL DUCTS EXTEND FROM A COMMON POINT ON THE HARDENED SURFACE OF THE STEEL COMPONENT THE SUPPLEMENTARY OPENING MAY BE A COMPLEX SLOT HAVING PORTION EXTENDING IN THE GENERAL DIRECTION OF THE SAID OIL DUCT BRANCHES.
Inventors
- 👤 Gerhard Seulen
- 👤 Hermann Kuhlbars
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |