Multi-speed powershift transmission
This patent describes a multi-speed powershift transmission for connection to a driven power shift. The transmission comprising: a speed transmission assembly including a speed input section connectable to the power shaft for selectively producing either of at least two forward input speed ratios having a relatively small speed ratio differential therebetween; a speed output section for selectively producing any one of at least three equally different forward output speed ratios and at least one reverse speed ratio. The input section comprising a pair of clutch operated drive gears mounted on a speed input shaft and hydraulically actuated in an alternative manner. The output section comprising a plurality of driven gears including a reverse gear mounted on a common speed output shaft, each driven gear having a hydraulically actuated clutch for connecting a selected driven gear to the speed output shaft; and a cluster gear assembly interconnecting the input and output section. The cluster gear assembly being selectively driven by either of the clutch operated drive gears, and a range transmission assembly for selectively producing any one of at least three equally different forward speed ranges. The range transmission assembly including a range input shaft which is operably coupled to the speed output shaft of the speed transmission assembly, a transmission output shaft, and a plurality of hydraulic clutch actuated gears interposed between the range input shaft and the transmissions output shaft and a master clutch assembly selectively interconnecting the speed and range transmission assemblies.
- Assignee:
- J.I. Case Co., Racine, WI
- Patent Number(s):
- US 4858495
- Application Number:
- PPN: US 7204167A
- OSTI ID:
- 5370442
- Resource Relation:
- Patent File Date: 8 Jun 1988
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method of overriding ratio matching feature in power shift transmissions
Transmission with a first-stage hydrostatic mode and two hydromechanical stages