Reduction gear and speed control for dredge pumps
US4311066A · kind A · utility
5Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1979 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | Dec 21, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/90
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A high-speed drive shaft is connected to dredge pump shaft by a planetary gear, upon which a controlled speed is superposed, by branching power off the high-speed shaft for driving an auxiliary adjustable pump which, in turn, runs a hydrostatic motor whose rotary output is connected to the ring gear of the planetary gear via a transmission which includes two brakes and a speed-responsive clutch; one brake is also speed-responsive, the other one is responsive to motor pressure, to provide a possibly redundant system for preventing torque transmission to the motor, e.g., in case of dredge pump blockage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.