US3313016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a crankshaft
Assignee: Gebrueder Heller Maschinenfabrik GmbH
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Filing: 1965-07-23
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Granted: 1967-04-11
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Expires: 1985-07-23
Abstract
No abstract record available.
Inventors
- 👤 Seulen Gerhard
- 👤 Scheffler Friedrich
- 👤 Gunsser Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:49
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/30; F; F16; F16C; F16C3/00; F16C3/04; F16C3/06; F16C3/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49702; Y10T29/49995; Y10T29/49996; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A METHOD OF PRODUCING AN OIL HOLE WITH AN OUTLET OPENING INTO THE PERIPHERAL SURFACE OF A CRANKPIN PORTION OR MAIN BEARING PORTION OF A CRANKSHAFT, WHICH COMPRISES HEATING THE PERIPHERAL LAYER OF A SAID PORTION CONTAINING THE SAME SURFACE SO THAT IN THE WIDTH REGION THEREOF WHICH IS TO CONTAIN THE SAID OUTLET THE HEATING IS TO A DEPTH NOT GREATER THAN THAT IN THE REMAINING WIDTH OF SAID SURFACE LAYER AND QUENCHING THE THUS HEATED PORTION TO OBTAIN A HARDENED LAYER, THEN FORMING THE OIL HOLE IN THE SAID REGION AT LEAST THROUGH THE HARDENED LAYER BY ELECTROCHEMICAL EROSION OF THE MATERIAL.
Claim 2
Independent Claim
104 words
A METHOD OF PRODUCING AN OIL HOLE WITH AN OUTLET OPENING INTO THE PERIPHERAL SURFACE OF A CRANKPIN PORTION OR MAIN BEARING PORTION OF A CRANKSHAFT, WHICH COMPRISES HEATING THE PERIPHERAL LAYER OF A SAID PORTION CONTAINING THE SAME SURFACE SO THAT IN THE WIDTH REGION THEREOF WHICH IS TO CONTAIN THE SAID OUTLET THE HEATING IS TO A DEPTH NOT GREATER THAN THAT IN THE REMAINING WIDTH OF SAID SURFACE LAYER AND QUENCHING THE THUS HEATED PORTION TO OBTAIN A HARDENED LAYER, THEN FORMING THE OIL HOLE IN THE SAID REGION AT LEAST THROUGH THE HARDENED LAYER BY ELECTROCHEMICAL EROSION OF THE MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |