Eccentric bearing assembly
US5785430A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Dec 16, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C3/22
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An efficient, cost effective eccentric bearing assembly is provided for use in a multiple piston hydraulic pump. The eccentric bearing assembly includes a roller bearing having an annular race. The race includes a groove around its outside perimeter. The groove engagably receives parti-spherical faces of a pair of opposed pistons. The parti-spherical face evenly loads the race and rollers as the race reciprocates with the eccentric. The invention avoids the use of rotating thrust bearings and instead axially supports the piston clip with stationary surfaces. Placement of the parti-spherical face or an optional conical face, at the interface between the pistons and the grooved race maintains the sliding contact point for piston intake strokes near the center of the face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.