Open-close device
US11583979B2 · kind B2 · utility
1Cited by
2References
17Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Apr 28, 2017 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Oct 11, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26D3/169
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention provides an open-close device, including a first member, a second member, a third member and a fourth member; the second member is rotatably connected to the first member, the third member is rotatably connected to the first member, the fourth member is rotatably connected to the second member and rotatably connected to the third member; the open-close device further includes an angle adjusting device which is provided at a joint between the third member and the first member, for adjusting the bending angle of the third member with respect to the first member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.