Torsion spring, elastic device and sliding apparatus and portable appliance utilizing the device
US8121658B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Jul 6, 2007 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Sep 23, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F1/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is an elastic device which is suitable for a sliding opening/closing apparatus of a portable appliance. The elastic device includes a first torsion spring including a first spiral part which is wound as a spiral shape without a vertical overlapping portion and a first extension arm extending from an outer portion of the first spiral part; a second torsion spring including a second spiral part which is wound as a spiral shape without a vertical overlapping portion thereof and a second extension arm extending from an outer portion of the second spiral part. The elastic device also includes a connection member connecting one of both ends of the first torsion spring and one of both ends of the second torsion spring with each other. The elastic device may have a smaller thickness in comparison with that of a conventional torsion spring having a vertical overlapping portion thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.