Non-backdrivable gear system
US8591367B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 17, 2011 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | May 19, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H1/003
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A self-locking non-backdrivable gear system in one embodiment includes an input spur gear mounted to a drive shaft, the input spur gear positioned in meshing engagement with a ring gear on which is mounted at least one planet locking gear which rotates with the ring gear and rotates on its own mounting. The planet locking gear meshes with a fixed spur gear and an output spur gear connected to a bi-rotational load bearing device. The fixed and output gears have different number of teeth and will lock in place with the planet gear should a rotational force be applied to the load bearing device in the absence of a rotational force at the drive shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.