Lubrication – Systems – With lubricant treatment means
Patent
1985-10-03
1987-08-04
Smith, Leonard E.
Lubrication
Systems
With lubricant treatment means
F01M 300
Patent
active
046839844
ABSTRACT:
The scavenge oil system disclosing the invention has a scavenge oil outlet located at the bottom of a blower housing whereby lubricating oil can flow thereto by gravity in most attitudinal positions of the housing. When the blower housing is in an attitude that a portion thereof, such as the rear, is at a level lower than the scavenge oil outlet, a scavenge pump, having an impeller driven by the blower shaft, is rendered effectively operable by having an inlet beneath the level of oil at the rear of the housing and the scavenge pump pumps the oil to a higher level whereby it may flow from the housing by gravity through either the scavenge oil outlet of the housing or through other passages. The scavenge oil system utilizes passages for oil flow formed as cored passages in the wall of the blower housing to minimize cost and weight addition to the blower and minimizes the power demands on the blower drive, since the scavenge pump will run dry in most attitudes of the blower and will only require power when effectively operating to pump oil to a higher level.
REFERENCES:
patent: 1958145 (1934-05-01), Jones
patent: 2492020 (1949-12-01), Thoresen
patent: 2503016 (1950-04-01), Weeks et al.
patent: 2723002 (1955-11-01), Garnier
patent: 3025672 (1962-03-01), Syrovy
patent: 3075349 (1963-01-01), Bill et al.
patent: 3075690 (1963-01-01), Luenberger
patent: 3378104 (1968-04-01), Venable
patent: 3618710 (1971-11-01), DeLisse et al.
Bettenga James L.
Cohen Mordehy
Tjenstrom Brian
Smith Leonard E.
Sundstrand Corporation
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