Devices incorporating a bi-stable ribbon spring
US7347019B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Oct 12, 2004 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Jan 20, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F1/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A bi-stable snap action ribbon spring incorporated into self-latching, spring-loaded mechanisms. The dual mode stability of the spring eliminates the need for complex latching mechanisms thereby simplifying the device manufacture and device reliability. The spring is stable in either a linear or coiled state enabling the simplified design of rolling, hinging and feeding mechanisms. A plan or map rolling and presentation device incorporates a bi-stable snap action ribbon spring along with optional spring end caps and stiffening elements. The plan or map is driven to a stable coiled or stable rolled shape by the influence of the snap action spring. Application of the snap spring properties to a discreet length of a longer ribbon can create a hybrid bi-stable hinge mechanism. A convenient storage container utilizes the bi-stable characteristics of a snap action ribbon spring to create a container having a self-closing and captured lid. A can or drum feeder incorporates the bi-stable characteristics of a snap action ribbon spring to provide a device that reliably stores and presents cans such as soda cans.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.