Assembly and method to slow down and gently close door
US10392849B2 · kind B2 · utility
11Cited by
196References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Feb 16, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/531
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved selective power assist device includes a controller for controlling a motor selectively coupled to the door and a clutch interposed between a drive shaft and a motor shaft, each having an angular velocity, whereby the motor is operatively coupled with and decoupled from the door. A brake assembly is disposed to synchronize the angular velocities of the drive shaft and the motor shaft allowing the clutch to operatively couple the motor with the door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.