Multi-stage door snap
US5060990A · kind A · utility
18Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1991 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Feb 8, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0907
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door latch mechanism, such as for a calculator battery enclosure, has a pair of ridge and groove mating points. The mechanism has a partially engaged position in which only a single ridge engages a groove and a fully engaged position in which both ridges engage grooves. A shock to the calculator, such as by dropping it, will generally not release the mechanism to a disengaged position. Consequently, the batteries will be retained and memory functions thereby preserved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.