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US 5,289,900 AGranted
Multi-functional service for lubrication tank
AssigneeUnited Technologies Corporation
InventorsWilho V. Aho, Jr., Terry H. Strout
Life of this patent
Estimating the term…
Abstract
The services normally associated with the lubrication oil tank used on aircraft are made dependent of each other by the judicious location of the various service housings, inlet ports and internal passages. The caps of the pressure fill port and overfill port are sequentially removable in order to prevent fill while the overfill port is blocked off. The overfill port and JOAP port are combined and internal valving automatically responds to the type of service called for.
Claims7
Means for servicing an oil lubrication system for aircraft engines, said means including:
- an oil tank,
- pressure filling means including a first housing having an inlet port and an outlet port connected to said oil tank for pressure filling said oil tank with oil,
- overfill means including a second housing having an inlet port means connected to said tank for accommodating oil overfill and sample collecting means in said second housing having a separate inlet means for sampling of the oil in the tank and an outlet port for receiving oil from said inlet port means and said separate inlet means,
- a valve having a pair of opposing valve elements cooperating with a pair of valve seats formed in a longitudinal passageway in said first housing interconnecting said tank through a second passageway and a third passageway formed in said first housing,
- whereby said valve elements are deployed to unseat said valve seats so that oil from a pressurized source is admitted into said tank by said third passageway and overfill of the oil in said tank is released from said second housing through one of said valve seats, through a fourth passage and through a discharge outlet port formed in said second housing.
2 more elements
Dependencies are inferred from the claim text.