Automatic speed reducing ratio-switching apparatus
US7220205B2 · kind B2 · utility
7Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2005 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Dec 1, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/0295
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Helical gears are used for a sun gear, planet gears, and an internal gear. Accordingly, when a load, which exceeds a preset torque, is applied to the internal gear, the internal gear is moved in a direction toward an input shaft or a direction toward an output shaft while making rotation in a direction different from that of the sun gear to automatically switch the speed reducing ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.