Internal-gear pump with partition plate having a chamfered edge
A gear pump is described comprising: a pump housing having a pump chamber, a fluid inlet and a fluid outlet; an outer gear mounted for rotation within the pump chamber and having first teeth on its inner surface; an inner gear mounted in the pump chamber and inside of the outer gear, the inner gear being mounted for rotation about an axis off center with respect to the outer gear to define a generally crescent shaped space therebetween. The inner gear has, extending from its outer surface, second teeth which mesh with the first teeth through a given angle of rotation, the first teeth being about two in number more than the second teeth. The second teeth each have a tip with curved edges and a top face extending therebetween; and a crescent shaped partition plate integral with the housing and substantially filling the crescent shaped space, the partition plate having a convex outer surface, a concave inner surface and a flat end face adjacent the fluid inlet.
- Assignee:
- AisinWarner, Ltd., Anjo
- Patent Number(s):
- US 4645441
- OSTI ID:
- 7082386
- Resource Relation:
- Patent File Date: Filed date 2 Apr 1985
- Country of Publication:
- United States
- Language:
- English
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