Vehicle transfer gear mechanism
AssigneeCaterpillar Tractor Co.
InventorsDavid L. Richards, Willis E. Windish
Life of this patent
Estimating the term…
Abstract
A transfer gear mechanism (24) for a four-wheel drive tractor (10) or the like includes a depending gear transfer train (28) that has an input gear (34) on an upper axis (36) and an output gear (38) on a lower axis (40). Housing means (26) are provided for supporting the gear transfer train (28), a pump (196) along the upper axis (36), and a PTO clutch assembly (52) along a third axis (54) between the upper and lower axes (b 36,40) such that the PTO clutch assembly (52) is disposed underneath the pump (196) at an effective location. A service brake assembly (44) is also disposed on the lower axis (40) and it, the pump (196), and the PTO clutch assembly (52) can be individually serviced.
Claims22
In a transfer gear mechanism for a vehicle of the type having a depending gear transfer train for propelling the vehicle, the gear transfer train having an input gear disposed on an upper axis and an output gear disposed on a lower axis, the improvement comprising:
- a pump;
- a PTO clutch assembly;
- and
- housing means for supporting the gear transfer train, the pump, and the PTO clutch assembly, the pump being located along the upper axis, and the PTO clutch assembly being located along a third axis elevationally intermediate the upper and lower axes and substantially underneath the pump.
In a transfer gear mechanism for a vehicle of the type including a housing and a depending gear transfer train supported within the housing for propelling the vehicle, the gear transfer train having an input gear disposed on an upper axis and an output gear disposed on a lower axis, the improvement comprising:
- a PTO input gear supported within the housing on the upper axis;
- a pump connected to the housing on the upper axis;
- drive means for rotatably powering the PTO input gear and the pump;
- and
- a PTO clutch assembly supported within the housing on a third axis elevationally intermediate the upper and lower axes and disposed substantially underneath the pump, the PTO clutch assembly being driven by the PTO input gear.
In a transfer gear mechanism for a vehicle of the type having a depending gear transfer train for propelling the vehicle, the gear transfer train having an input gear disposed on an upper axis and an output gear disposed on a lower axis, the improvement comprising:
- a service brake assembly operatively connected to the gear transfer train;
- a pump;
- a PTO clutch assembly;
- and
- drive means for rotatably powering the pump and the PTO clutch assembly;
- and
- housing means for containing and supporting the gear transfer train, the pump, the service brake assembly in axial alignment with the lower axis, and the PTO clutch assembly at an elevation intermediate the upper axis and the lower axis, and wherein the sevice brake assembly is adapted to be released in a first direction from the housing means, and the pump and the PTO clutch assembly are adapted to be released in a direction opposite to the first direction from the housing means for individual servicing.
In a transfer gear mechanism for a vehicle of the type having a depending gear transfer train for propelling the vehicle, the gear transfer train having an input gear disposed on an upper axis and an output gear disposed on a lower axis , the improvement comprising:
- a service brake assembly;
- a PTO clutch assembly;
- housing means for containing and supporting the gear transfer train, the service brake assembly in axial alignment with the lower axis, and the PTO clutch assembly at an elevation intermediate the upper axis and the lower axis;
- a PTO input gear;
- an engine driven shaft located generally within the housing means, the engine driven shaft extending through the input gear of the gear transfer train and being drivingly connected to the PTO input gear, and the PTO input gear being connected to the PTO clutch assembly;
- a pump connected to the housing means;
- and
- an auxiliary drive shaft releasably connected to the pump and to the PTO input gear.
In a transfer gear mechanism for a vehicle of the type having a depending gear transfer train for propelling the vehicle, the gear transfer train having an input gear disposed on an upper axis and an output gear disposed on a lower axis, the improvement comprising:
- a service brake assembly;
- a PTO clutch assembly;
- housing means for containing and supporting the gear transfer train, the service brake assembly in axial alignment with the lower axis, and the PTO clutch assembly at an elevation intermediate the upper axis and the lower axis;
- and
- a pump releasably connected to the housing means along the upper axis, the pump being located above the PTO clutch assembly.
Dependencies are inferred from the claim text.