Valve spring
1. Field of the Invention A method of making a spring are described. The spring is made by etching or cutting at least one spiral arm in a flat substrate leaving residual material around the arm. The intermediate residual material is either pushed or lifted to form a conical spring.
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| Hauptverfasser: | , , |
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| Format: | Patent |
| Sprache: | eng |
| Online-Zugang: | Volltext bestellen |
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| Zusammenfassung: | 1. Field of the Invention
A method of making a spring are described. The spring is made by etching or cutting at least one spiral arm in a flat substrate leaving residual material around the arm. The intermediate residual material is either pushed or lifted to form a conical spring. |
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