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US 4,307,621 AGranted
Swing drive assembly for machines having rotatable frames
AssigneeDresser Industries, Inc.
InventorThomas S. Merron
Life of this patent
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AssigneeDresser Industries, Inc.
InventorThomas S. Merron
Estimating the term…
In a machine having a lower frame, an upper frame having at least one upright wall section, rotatably mounted on the lower frame, and a ring gear mounted on the lower frame, an assembly for swinging the upper frame relative to the lower frame comprising a drive unit mountable on the upright wall section, having a pinion drivingly engageable with the ring gear, means for adjusting the lateral displacement of the drive unit relative to the upper frame, correspondingly adjusting the lateral displacement between the meshing teeth of the pinion and the ring gear, means for adjusting the vertical displacement of the drive unit relative to the upper frame, correspondingly adjusting the vertical displacement of the meshing teeth, providing proper alignment of the meshing teeth and full bearing contact therebetween, and means for rigidly securing the drive unit to the upper frame upon effecting proper adjustment of the displacements between the drive unit and the upper frame.
In a machine having a lower frame, an upper frame having at least one upright wall section, rotatably mounted on said lower frame, and a ring gear mounted on said lower frame, an assembly for swinging said upper frame relative to said lower frame comprising a drive unit mountable on said upright wall section, having a pinion drivingly engageable with said ring gear, means for adjusting the lateral displacement of said drive unit relative to said upper frame, correspondingly adjusting the lateral displacement between the meshing teeth of said pinion and said ring gear, means for adjusting the vertical displacement of said drive unit relative to said upper frame, correspondingly adjusting the vertical displacement of said meshing teeth, providing proper alignment of said meshing teeth and full bearing contact therebetween, and means for rigidly securing said drive unit to said upper frame upon effecting proper alignment of said displacements between said drive unit and said upper frame.
Dependencies are inferred from the claim text.