Straight-pole sun umbrella hand-cranking structure
US11412821B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2020 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Nov 2, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45B2023/0012
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A straight-pole sun umbrella hand-cranking structure includes a standing pole and a shell fixed on the standing pole, wherein the shell comprises a first outer shell and a second outer shell. The shell is integrally fixed with one side of the standing pole, and a gear is arranged within the first and the second outer shells. A cranking shaft passes through the gear and is connected to an anti-slip mechanism, and a cranking handle is externally connected to the cranking shaft. The anti-slip mechanism includes a torsion spring, wherein the torsion spring is sleeved on the end portion of the cranking shaft. The torsion spring is arranged at the tail end of the cranking shaft such that the anti-slipping performance is improved by the elastic force of the spring. As the aforesaid structure is protected against abrasion, its functional life is significantly prolonged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.