Pumps – Condition responsive control of drive transmission or pump... – Having means to hold or resist movement of pumping element
Patent
1976-08-23
1978-03-22
Freeh, William L.
Pumps
Condition responsive control of drive transmission or pump...
Having means to hold or resist movement of pumping element
92129, 417534, F04B 4908
Patent
active
040801080
ABSTRACT:
A differential comprises a pair of face gears, a carrier rotatably mounted between the face gears and a plurality of pinion gears rotatably mounted on the carrier and intermeshing with the face gears for differentially permitting one face gear to rotate relative to the other face gear. The pinion gears are each rotatably mounted in bearings and a lubrication system is provided for pumping lubricating fluid to the bearings for lubrication and cooling purposes. The lubrication system comprises a double-acting pump mounted adjacent to the carrier and a rocker arm pivotally mounted adjacent to each end of the pump. A first end of the rocker arm engages a cam attached to the carrier whereas a second thereof engages an end of a piston rod reciprocably mounted in the pump to pump lubricating fluid to the bearing. The pump comprises a piston slidably mounted on a rod, a pair of retainers secured to the rod and disposed on either side of the piston, and a compression coil spring disposed between each retainer and the piston.
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Hackett David E.
Keske Frank E.
Caterpillar Tractor Co.
Freeh William L.
Look Edward
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