Gearbox self contained breathing system
US11940042B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2022 |
| Grant date | Mar 26, 2024 |
| Priority date | — |
| Expiry date | Jul 29, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/027
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Breathing systems and methods for a gearbox is described. Embodiments preferably create a closed system for air within the gearbox. As an operating gearbox warms the air or fluid within, or an altitude change causes air to expand or contract, increased pressure can result and air can escape through tubing to a cannister. The cannister can receive the expanding air in an impermeable cavity that is proximate to a bladder open or partially open to an exterior environment. Air can press on the bladder, expanding the cavity and shrinking the bladder until a pressure equilibrium is reached. As operation of the gearbox is lowered or powered off, or another altitude change occurs, the air can cool and/or retract into the gearbox. The bladder can then expand and press on the cavity until equalizing the pressure within the cannister.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.