Lubrication system for an air motor
OwnerJagdish C. Kalyan, Bryan J. Dickinsoninventors
Life of this patent
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Abstract
A lubrication system for an air motor which incorporates a positive feed oil pump, driven by the air motor, which forces lubricant, under pressure to the majority of critical lubrication zones. Because of manufacturing tolerances as well as ease of maintenance, the rotary valve and the main crankshaft are coaxial but separate. The lubricant is forced inwardly to the axis of either the crankshaft or the rotary valve and then transmitted to the other rotating member by way of a hollow elastic snubber which preloads the valve and crankshaft in opposite directions.
Claims6
In an air motor having a rotary valve substantially coaxial with and adjacent to a crankshaft and including means drivingly interconnecting the two elements, a lubrication system to force-lubricate both elements, comprising:
- a. a pump means to provide a continuous supply of lubricant under pressure,
- b. conduit means to carry lubricant from the pump to a conduit along the axis of rotation interior of the rotary valve, and
- c. means continuously conducting the lubricant from the rotary valve to the hollow interior conduit of the crankshaft during operation of the motor wherein the means for conducting the lubricant includes a hollow flexible member compressed between the two elements to form one continuous conduit between the conduits of the elements.
A lubrication system for apparatus having rapidly moving elements including a rotating shaft such as in an air motor, comprising:
- a. hollow, coaxial, segmented shaft means, one segment being a rotary valve means and one a crankshaft means,
- b. a source of lubricant,
- c. pump means for supplying lubricant from said source under pressure whenever the apparatus is in operation,
- d. conduit means interconnecting the pump means and the interior of the rotary valve means, and
- e. means interconnecting the sections of the shaft, including means axially biasing the shaft segments away from each other and serving as a conduit to transmit the lubricant from the hollow interior of the rotary valve means to the hollow interior of the crankshaft means and conduit means for conducting the lubricant outwardly of the hollow interior of said crankshaft means to the outer surface of the shaft whereby the system supplies pressurized lubrication to the critical portions through the conduits.
Means retaining a segmented shaft in the form of a hollow rotary valve and a hollow crankshaft in a predetermined preload condition and serving as a conduit to conduct pressurized lubricating fluid from the interior of one segment to the interior of another segment, comprising:
- a. a hollow rotating valve including means to introduce lubricating fluid into its void, said valve held in a fixed axial orientation by bearing members,
- b. a hollow rotating crankshaft coaxial with and adjacent to the rotating valve, said crankshaft held in position by bearing members,
- c. means to assure uniform rotation of the two segments, and
- d. a hollow elastic snubber means captured between the two segments, forcing them axially outwardly and transmitting lubricating fluid from the hollow of the rotary valve to the hollow of the crankshaft through the hollow elastic snubber means, with said hollow crankshaft having conduits leading radially outward to the surface of the throws so as to lubricate bearing surfaces thereon.
In an air motor having a rotary valve having an interior conduit substantially coaxial with and adjacent to a crankshaft having an interior lubrication conduit and including means drivingly interconnecting the two elements, a lubrication system to force-lubricate both elements comprising:
- a. a pump means to provide a continuous supply of lubricant under pressure,
- b. conduit means to carry lubricant from the pump to the interior conduit of one of the elements, and
- c. means continuously conducting the lubricant to the other element during operation of the motor wherin the means for conducting the lubricant includes a hollow flexible member compressed between the two elements to form one continuous conduit between the conduits of the elements.
Dependencies are inferred from the claim text.