Micro-traction drive unit, hydraulic transmission and hydraulic device
US10408319B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2016 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Sep 13, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H13/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A MTD unit according to a present disclosure includes a bearing member that has an inner ring, a plurality of rolling elements and an outer ring and is capable of bearing a radial load and a unidirectional axial load, a retainer that has a retaining part retaining the rolling elements such that the rolling elements are rotatable around their own axes and rotates around an axis of the inner ring in accordance with an orbital motion of the rolling elements around the inner ring, and a case that accommodates the bearing member and the retainer, wherein the case has a piston that is axially movable so as to push a movable body, which is either the inner ring or the outer ring, in a first axial direction, an oil chamber provided on an opposite side of the piston from the movable body, and an oil passage for guiding pressurized oil to the oil chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.