Epicyclic transmission having free rolling roller driving elements
US4584904A · kind A · utility
32Cited by
16References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1982 |
| Grant date | Apr 29, 1986 |
| Priority date | — |
| Expiry date | Mar 26, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19981
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A speed reducing transmission includes roller driving elements operating to transmit torque between opposed trochoidally formed surfaces. The device may have one or multiple reduction stages and may be either counterbalanced or counterweighted to achieve dynamic balance. The opposed surfaces are provided as conjugate epitrochoidal and hypotrochoidal gear elements, while the rollers are simple cylinders maintained suitably spaced by means of roller cages or retainers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.