Epicyclic transmission
US4468984A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Mar 3, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H15/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An epicyclic transmission with steplessly-variable speed control includes a set of three planet wheels (46) which are in the form of tapered rollers of dual conicity and are supported for rotation by a planet carrier (34) driven by a drive shaft (28). The tapered planet wheels have a larger frusto-conical portion (48) in rolling contact with a governing annulus (58) which is locked for rotation and is displaceable axially, and a smaller frusto-conical portion (50) associated with a driven annulus (92) which rotates a driven shaft (102). The tapered planet wheels also have two axially-spaced bearing surfaces (52,54) in rolling contact with two corresponding bearing surfaces (136,138) of a freely-rotatable sun wheel in the form of a sleeve (122) coaxial with the drive shaft (FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.