Method of making passage structures
US4065046A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1974 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Dec 16, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1075
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A collimated hole structure formed by constricting a plurality of tubular elements each provided with a core for supporting the tubular element during the constricting operation. The bundle of elements is constricted to a point where the elements effectively fuse into a substantially monolithic body. The cores are then removed, leaving a plurality of extremely small diameter, generally parallel passages in a solid body. The tubular elements may be arranged in any desired array, and thus the passages may be provided similarly in any desired array. The passages may have high aspect ratios and may be closely juxtaposed. In one illustrative application, the collimated hole structure is provided with dielectric film and utilized as an anode portion of an electrolytic capacitor. In another illustrative application, the collimated hole structure is utilized as a tip for a drilling device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.