Lifting structure with adjustable bearing capacity
US9857020B2 · kind B2 · utility
9Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2016 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Jan 21, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16M2200/048
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A lifting structure with adjustable bearing capacity is provided. The lifting structure comprises a main body, a carrier, a main constant force spring, and at least one auxiliary constant force spring. The main body comprises at least one slide and at least one actuating module. The main constant force spring connects to the carrier. The actuating module is able to be selectively switched between a non-actuating position and an actuating position. When the carrier is driven from the top of the lifting structure along the slide, at least the main constant force spring provides a constant force to the carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.