Movement control devices
US10745955B2 · kind B2 · utility
3Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2017 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Jun 23, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/132
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device is provided for controlling the motion of a movable member such as a sliding door. The device comprises two springs. Each spring has its own catch for releasably holding it in a pre-loaded condition. The catches are releasable by motion of the door to apply force to its closing movement. The catches are arranged so that one of the springs will exert force on the door before the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.