Bearing for gear pump
US5417556A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1994 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Mar 8, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/10
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A floating bearing having an oval body located in a cavity along with a fixed bearing retains a pair of intermeshing gear members in the cavity in a housing of a pump. A spacer member engages an axial rib on the oval body to form a control chamber between the spacer member and the oval body. A resilient member provides an initial force which urges the floating bearing into engagement with the pair of intermeshing gears and forms a gap between the spacer and the oval body. Entrance fluid pressure from an entrance chamber is communicated to the control chamber while discharge fluid pressure from a discharge chamber is communicated to the gap. The entrance and discharge fluid pressures act on the floating bearing to provides a secondary force which urges the floating bearing into engagement with the pair of intermeshing gears to seal the entrance chamber from the discharge chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.