Fuel pump for a motor vehicle
US5393206A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1994 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Jun 29, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C15/0061
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A motor vehicle fuel pump including a tubular steel housing and a roller vane positive displacement pump and an electric motor in the tubular steel housing. The roller vane pump includes a pair of flat side plates, a rotor between the side plates, and a T-shaped sleeve bearing in a plain bore in one of the side plates. A lip at one end of a tubular body of the sleeve bearing has a side defining an annular seat in a plane perpendicular to the tubular body. The tubular body has a shaft bore therethrough and a stepped outer wall including a large diameter part adjacent the annular seat and a small diameter part adjacent the large diameter part. The large diameter part is force fitted in the plain bore until the annular seat engages flush against a flat, outside surface of the side plate. The annular seat positions the longitudinal centerline of the tubular body perpendicular to the outer side plate for optimum alignment with the armature shaft when an end of the latter is disposed in the shaft bore. The pump rotor is rotatably supported on the small diameter part of the sleeve bearing which protrudes beyond the outer side plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.