Cylindrical member
US10907570B2 · kind B2 · utility
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1References
12Claims
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Key dates
| Filing date | Dec 12, 2018 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Jan 10, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F2200/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
To provide a cast iron cylindrical member capable of improving the bonding strength when metal on the outer peripheral side and the cast iron cylindrical member are integrated. For this objective, in a cast iron cylindrical member including a plurality of projections including constricted projections on the outer peripheral surface, the anchor portion index (I) represented by {(Aav2−Bav2)×π/4×Pn×Pr/100}×0.35H/2 is set in a specific range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.