Passage structure
Abstract
Abstract A COLLIMATED HOLE STRUCTURE IS 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 NBODY. 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.
Inventors
- 👤 J Roberts
- 👤 P Roberts
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |