Oil pump made of aluminum alloys
US5338168A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Jun 29, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2230/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An oil pump comprises a casing of aluminum alloy and at least one rotor housed therein. The rotor is produced by powder metallurgical with a rapidly solidified aluminum alloy comprising, by weight, of 5 to 25% of Si, up to 15% of one or more alloy elements selected from the group consisting of 3 to 10% of Fe, 3 to 10% of Ni and 1 to 8% of Cr, and the balance of Al and inevitable impurities. The casing may be produced by powder metallurgy or ingot metallurgy with an aluminum alloy consisting essentially, by weight, of 5 to 25%, preferably 5 to 17%, of Si, 1 to 5% of Cu, 0.2 to 1.5% of Mg, 0.2 to 1% of Mn, and the balance of Al and inevitable impurities. The rotor and casing are so combined that the sum of the Si content of said rapidly solidified aluminum alloy for casing and that of said rapidly solidified aluminum alloy for rotor being equal to or more than 15 percent by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.