Fluid dampers having temperature-dependent viscosity compensation and auxiliary power unit inlet systems employing the same
US9091321B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2013 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Nov 23, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2033/0213
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Embodiments of a fluid damper are provided, as are embodiments of an Auxiliary Power Unit inlet system including a fluid damper. In one embodiment, the fluid damper includes a housing assembly containing first and second hydraulic chambers, which are fluidly coupled by way of a flow passage. A plunger is slidably disposed within the housing assembly and is moves through a range of translational positions in response to variations in damping fluid pressure when the fluid damper is filled with damping fluid. An annulus or other restricted flow path is fluidly coupled between the first and second hydraulic chambers and is at least partially defined by the flow passage and the plunger. The restricted flow path has at least one dimension, such as a length, that varies in conjunction with the translational position of the plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.