Pump unit
US4252508A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1979 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | Mar 1, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B1/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump unit includes two main variable displacement axial piston pumps with coaxial input drive members. A power input shaft to the pump unit is mounted for rotation in the housing along an axis perpendicular to the common axis of the main pump drive members. A first bevel gear mounted within the housing on the power input shaft meshes with a second bevel gear which is rotatable about the common axis of the main pump drive members and drivingly connected with at least one of the pump drive members. The housing has at least one flange defining a surface on which an auxiliary pump may be mounted. The auxiliary pump has an input shaft which extends through an opening in the housing defined by the flange. A third bevel gear is mounted on the auxiliary pump input shaft from inside the housing and meshes with the second bevel gear. The pitch diameter of the second bevel gear is greater than the pitch diameters of the first and third bevel gears so that the tips of the teeth of the third bevel gear clear the tips of the teeth of the first bevel gear. It is contemplated that the housing could be provided with three flanges each lieing in a plane parallel to the common axis of the main pump…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.