Support apparatus for movable member and pump apparatus
US6736609B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 19, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Mar 19, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2326/47
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pump apparatus of simple construction has a bearing structure for which a lubricant is unnecessary. A flow passage for a refrigerant (liquid ammonia) is formed in a housing to provide communication between a suction port and a discharge port, and slide bearing members formed of amorphous carbon are provided in the housing to be fitted into the flow passage to support a rotating shaft. A drive for rotating the rotating shaft is constituted by a rotor, which is fitted into the flow passage and provided with the rotating shaft, and a stator, which is provided outside the housing to surround the rotor, and a pump body is provided midway the flow passage and connected to the rotating shaft to pump a fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.