Diaphragm
US4434203A · kind A · utility
27Cited by
9References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1980 |
| Grant date | Feb 28, 1984 |
| Priority date | — |
| Expiry date | Oct 27, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A diaphragm having a pattern of wrinkles adapted so that the diaphragm is both radially and tangentially expandable with respect to a reference point in that central portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.