Hydraulic motor assembly for an aerial refueling system
US9102414B2 · kind B2 · utility
0Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2012 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Mar 1, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86493
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Apparatuses and systems that use a variable displacement motor-pump (VDMP) to control the position and speed of a hose for an aerial refueling system are disclosed. At displacements greater than required to hold a position of the hose, the VDMP operates in a motor mode to retract the hose. For lesser displacements, the VDMP operates in a pump mode to control extension of the hose. In accordance with some embodiments, a pump-motor relief valve operates to throttle hydraulic fluid flow from the VDMP and to control mixing of hydraulic fluid flowing from the VDMP with system hydraulic fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.