Overload release torsion damping device for a worm gear reducer
US5913937A · kind A · utility
Inventor
Key dates
| Filing date | Dec 19, 1997 |
| Grant date | Jun 22, 1999 |
| Priority date | — |
| Expiry date | Dec 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19828
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A worm gear reducer includes a worm fixedly mounted on a drive shaft rotatably mounted in a housing, a driven shaft rotatably mounted in the housing and including a first end portion formed with an outer thread, a mediate portion with a worm wheel mounted thereon meshing with the worm, and a second end portion. A torsion damping device includes two friction washers each mounted on the driven shaft and each urged on one side of the worm wheel, two abutting rings each securely mounted on the driven shaft and each urged on a corresponding one of the two friction washers, a biasing member mounted on the first end portion of the driven shaft and urged on one of the abutting rings, a sleeve mounted on the first end portion of the driven shaft and urged on the biasing member, and a compression nut engaged on the outer thread of the driven shaft and urged on the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.