Lubrication system
US4569196A · kind A · utility
21Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1984 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Apr 20, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M1/16
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A lubrication system including a regulating valve and a bellows is provided for controlling the flow of lubricant from a source of lubricant under pressure to the gearbox and sump of an aircraft gas turbine engine as a function of the altitude at which the engine is operating. An override valve by-passes the regulating valve and cuts off flow of lubricant to the sump while assuming control of lubricant flowing from the source to the gearbox when a detent valve, operatively associated with the bellows, detects that either the regulating valve or the bellows is inoperative and permits the override valve to become operative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.