Spiny liner and manufacturing method of same, and method of determining bonding strength
US12305590B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 18, 2020 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Jun 4, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F2200/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a spiny liner that may further improve bonding strength when being integrated with metal on the outer peripheral surface side. The spiny liner includes a plurality of projections including constricted projections on the surface. Denoting the number of constricted projections per 100 mm2 out of the projection by Pc, the average height of projections by h (mm), and the average of maximum thicknesses and the average of minimum thicknesses of any 20 projections out of the constricted projections by dw (mm) and dn (mm), respectively, the total value of (I) and (II) below is 1.55 or more. (I)=Pc×[(0.35hπ/12)×(2dw2−dw×dn−dn2)](I)=Pc×{(dn2/4)×r×0.35h}
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.