Constant mesh gear transmission
This patent describes a vehicle having at least two drive axles, and a transfer gear assembly through which the vehicle is propelled, including a transfer gear case, a pair of driven shafts rotatably mounted in non-aligned spaced relation in the gear case, means drivingly connecting the driven shafts to the drive axles, respectively, an input shaft and means rotatably mounting the input shaft in the gear case. The improvement described here consists of a counter shaft rotatably mounted in the gear case in spaced relation to the driven shafts and the input shaft, countershaft gear means drivingly connecting the input shaft to the countershaft, constant mesh gear means drivingly connected to one of the driven shafts, controllable clutch means for respectively coupling the constant mesh gear means to the input shaft, the counter shaft and the other of the driven shafts, and selective control means operatively connected to the clutch means for transmitting torque to one or both of the drive axles at two different drive ratios without interrupting propulsion of the vehicle.
- Assignee:
- NOV; NOV-85-020201; EDB-86-158441
- Patent Number(s):
- US 4605084
- OSTI ID:
- 5339296
- Resource Relation:
- Patent File Date: Filed date 20 Oct 1983
- Country of Publication:
- United States
- Language:
- English
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