Buffer device for small-sized roller shade
US10393206B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Sep 12, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2232/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A buffer device for small-sized roller shade comprises a housing body, a covered cylinder within the housing body, an oil seal over the outer edge of the covered cylinder and sealing with respect to the housing body, a covering body secured onto the housing body, a spring surrounding the outer edge of the covered cylinder away from the housing body and the covering body, a rotating body accommodating the covered cylinder around which the spring is provided, such that the spring and the covered cylinder are combined to rotate, a closure cap connected over the outer edge of the covered cylinder and synchronously rotated therewith, and a securing part away from the housing body while combined with the closure cap and the covered cylinder. Thus, the buffer device is reduced in volume for providing a shade panel with buffer effect in drawing/furling process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.