Cabin outflow valves having laterally-tapered sealing surfaces and cabin pressure control systems employing the same
US9873513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2015 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Jul 1, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/2261
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Embodiments of a cabin outflow valve having one or more laterally-tapered sealing surfaces are provided, as are cabin pressure controls system including cabin outflow valves. In one embodiment, the cabin outflow valve includes a frame and a first door, which is pivotally coupled to the frame and which is rotated by an actuator between open and closed positions. The first door includes, in turn, a torque input point at which the actuator applies a closing force when rotating the first door into a closed position. A laterally-tapered sealing surface extends along a lateral axis of the cabin outflow valve and has a profile height decreasing with increasing proximity to the torque input point. The laterally-tapered sealing surface helps to ensure the formation of a complete lateral seal when in the first door is rotated into the closed position to significantly reduce or eliminate leakage through the cabin outflow valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.