Mixer drum driving device with an auxiliary hydraulic pump to rotate a mixer drum
US9551385B2 · kind B2 · utility
5Cited by
28References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2012 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Nov 9, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/7058
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A mixer drum driving device includes a mixer drum, a hydraulic motor, a hydraulic pump, an auxiliary hydraulic pump for rotating the mixer drum for mixing by supplying pressure oil to the hydraulic motor independently of the hydraulic pump, and a direct-current brush motor for driving and rotating the auxiliary hydraulic pump. The auxiliary hydraulic pump is driven and rotated by the direct-current brush motor when the engine stops during the rotation of the mixer drum for mixing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.