Patent ID: 7011275
Filing Date: 2006-03-14
Classification: F16H,H02K,Y10T

Abstract:
1. An internal spur gear drive, comprising: an elongate drive shaft housing having a first end and a second end opposite said first end; a generally planar mounting base extending from the second end of said drive shaft housing, formed integrally therewith and substantially normal thereto; at least one set of motor mounting lugs extending from said mounting base, substantially coplanar with said mounting base; said mounting base having at least a pair of structure attachment passages formed therethrough, disposed substantially parallel to said drive shaft housing; a rotary drive shaft having a first end and a second end opposite the first end, the drive shaft being rotatably mounted within said drive shaft housing with the first end of said drive shaft extending from the first end of said drive shaft housing; a rotary drive bell having a first end and a second end opposite the first end, the first end of said drive bell being immovably affixed to the first end of said drive shaft in order to rotate with said drive shaft; an internally toothed ring gear extending from the second end of said drive bell, and circumferentially surrounding said drive shaft housing of said mounting base; at least one motor immovably affixed to said at least one set of motor mounting lugs of said mounting base, and extending substantially opposite said drive shaft housing; a motor drive shaft extending from said at least one motor, substantially parallel to said drive shaft housing; and an externally toothed pinion gear disposed upon said motor drive shaft, and rotationally engaging said internally toothed ring gear of said drive bell for driving said drive bell.