Scavenging pump
AssigneeKabushiki Kaisha Komatsu Seisakusho
InventorsYoshio Tsutsumi, Tomoyuki Takahashi
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Abstract
A scavenging gear pump for use in a final drive comprising a drive gear and a driven gear, each being mounted for rotation and in mesh with each other. The drive gear is coupled with an input shaft and rotated thereby and has formed therein a fluid passage for communicating an outlet port of the pump with a fluid chamber formed in the input shaft. A plurality of guide passages are formed in the input shaft for supplying lubricant from the fluid chamber to rotary components, such as bearings and gears.
Claims2
A scavenging gear pump for use in a final drive including a casing for the final drive, the casing having formed therein a fluid reservoir for lubricant, and an input shaft rotatably supported through bearing means in said casing, said input shaft having formed therein a first fluid chamber leading to said bearing means, said scavenging gear pump comprising:
- a housing detachably mounted on said casing, said housing having formed therein an inlet port and an outlet port of said pump and a second fluid chamber communicating with said outlet port, said inlet port being communicated with said fluid reservoir;
- a drive gear rotatably mounted in said housing, said drive gear being coupled with said input shaft and having formed therein a fluid passage interconnecting said first and second fluid chambers;
- and
- a driven gear rotatably mounted in said housing, said driven gear being in mesh with said drive gear.
Dependencies are inferred from the claim text.