Hub of a tape cassette
US4511099A · kind A · utility
4Cited by
0References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1983 |
| Grant date | Apr 16, 1985 |
| Priority date | — |
| Expiry date | Nov 15, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hub of a tape cassette comprising a generally circular outer ring portion (6), an inner ring portion (8) concentric with the outer portion and a generally annular rib (10) connecting the outer and inner ring portions, wherein said annular rib is formed so that its wall thickness increases continuously from a position (A) adjacent to a gate portion (G) for injection molding towards a portion (B) most apart from the gate portion, along the circumferential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.