Pump having unidirectional tapered land thrust bearing cluster
US5829338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Mar 3, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
This invention pertains to a single-piece unidirectional tapered land thrust bearing cluster for use in high-pressure positive-displacement swashplate piston pumps and the like. The bearing cluster has a plurality of identical bearing pads integral to the bearing cluster. Each bearing pad includes a tapered section, a flat section and a fluid communicating slot integral therewith. During operation of the pump the swashplate camming surface rotates relative to the bearing cluster which develops a pressurized load-carrying hydrodynamic film of decreasing thickness and increasing strength between a back plate of the rotating swashplate and the bearing cluster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.