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US 4,789,316 AGranted
Gear lubrication pump for an air motor
AssigneeIngersoll-Rand Company
InventorDuane S. Gable
Life of this patent
Estimating the term…
Abstract
This invention relates to a lubrication system for a gear assembly in a sealed housing coupled to an air motor. The lubrication system includes a screw pump powered by the air motor to move lubricated fluid completely through the critical parts in the sealed housing.
Claims4
A fluid lubrication system for a gear assembly coupled to an air motor comprising:
- a fluid source;
- a fluid exhaust;
- first fluid passageways connecting said fluid source with said gear assembly, wherein said first fluid passageways further comprise radially inner passageways and radially outer passageways;
- second fluid passageways connecting said gear assembly with said exhaust;
- and
- means for providing momentum to said fluid in said first and second passageways wherein said momentum providing means further comprises a fluid pressure differential in the radially inner passageways of said first passageways and
- a fluid pump in the radially outer passageways of said first passageways.
4 more elements
A method of lubricating a geared air motor having radially inner and outer fluid passageways through the gears, comprising the steps of:
- capturing pressurized fluid from the air motor;
- circulating part of the captured fluid through the radially inner passageways by a fluid pressure differential;
- pumping the remainder of the captured fluid through the radially outer passageways;
- lubricating the gears with the fluid;
- and
- pumping the fluid through the remaining passageways downstream of the gears to an exhaust.
3 more elements
Dependencies are inferred from the claim text.