Power transmission unit for variable-speed drive of machinery
US4964843A · kind A · utility
8Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Jul 14, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2037/088
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a power-transmission unit for variable-speed drive of machinery with hydro-dynamic speed-superposition of a differential gear a second torque converter is provided as a braking device. This increases the effectiveness of the unit by feedback of the superposed output onto the drive side. Particularly advantageous is the use of an oppposed-motion converter as brake converter for certain operating conditions or the combination of a with-motion converter and an opposed-motion converter in the unit. Furthermore, this makes an extension of the speed control range possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.