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US 3,960,029 AGranted
Gear drive
AssigneeCarl Hurth Maschinen- und Zahnradfabrik GmbH & Co.
InventorJohann Eichinger
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Abstract
A gear drive arrangement having at least two meshing spur gears which are helical or straight toothed in only one direction. One of the meshing spur gears has at least two axially spaced gear parts thereon and, approximately in the center thereof, at least one peripheral groove separating the two gear parts. The depth of the groove is at least as great as the height of the tooth and preferably extends below the root circle. The other meshing spur gear is free of a peripheral groove thereon.
Claims4
A gear drive arrangement, comprising:
- a first spur gear having a plurality of straight and parallel teeth thereon and first support means supporting said first spur gear for rotation about a first axis of rotation;
- a second spur gear equal in width to said first spur gear and having a plurality of straight and parallel teeth thereon and second support means supporting said second spur gear for rotation about a second axis of rotation, said teeth on said second spur gear meshing with said teeth on said first spur gear only over a small zone of said diameters of said first and second spur gears so that a majority of teeth on said first and second spur gears are free of engagement with each other;
- lubricant means for lubricating said first and second spur gears;
- and
- annular groove means around the periphery of said second spur gear and in the center of the width thereof for receiving the axial flow of lubricant between the teeth in at least said zone of meshing engagement between said first and second spur gears to thereby minimize the power loss due to the presence of said lubricant, said groove being at least as deep as the tooth height, said teeth of said first spur gear being free of a peripheral groove.
2 more elements
Dependencies are inferred from the claim text.