Lift force determining an optimal lift assist mechanism
US11326396B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Feb 26, 2019 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Jan 31, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/6854
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A desired range of lift force to raise a window shade is used to select the window shade hardware such as, for example, the optimal LAM. A desired lift force may be 5 pounds for ADA compliance. However, if the user wants to exert less effort to lift the window shade, the user may request an increased lift force of 6 or 7 pounds. Therefore, if a lift force range between 3-8.5 pounds is desired, the system selects the optimal LAM to maintain and guarantee that the lift force required to operate the shades will not exceed the desired range of between 3-8.5 pounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.