Planetary gearing system
US4468985A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | May 25, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/02004
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A planetary gearing system comprising a planet carrier and planet gear wheels and planet friction wheels supported on planet wheel shafts on said planet carrier, said planet gear wheels cooperating with a gear ring encircling them and a sun gear wheel, said planet friction wheel cooperating with a friction ring circumscribing them and with a sun friction wheel, a housing enclosing the planet gearing system, said friction ring or ring gear being radially movable relative to said housing and means for mounting said gear ring and/or friction ring 20 in said housing by means providing an adjustable friction force so that they rotate in the housing when subjected to a torque exceeding a torque determined by said friction force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.