Multiple power path concentric speed reducer

A multiple power path, concentric speed reducer for a wheel drive, comprising rotatable shaft means, a motor for driving said shaft means, stationary axle means disposed coaxially around said shaft means, housing means concentric with said center shaft means, a first pinion having two sets of gear teeth thereon mounted on said shaft means for rotation therewith, an externally toothed reaction gear fixedly mounted on said axle means, and two gear trains operatively interconnecting said pinion with said gear mounted on said axle means for distributing the load transmitted between said shaft means and said axle means and rotating said housing means, each gear train having a first gear engaging one of the sets of gear teeth on said pinion, a shaft for said first gear journalled in said housing means, a second pinion mounted on the shaft for said gear and having two sets of gear teeth thereon, a pair of second gears engaging the two sets of teeth thereon, a pair of second gears engaging the two sets of teeth on said second pinion, shafts for said pair of gears, and gears on the shafts for said pair of gears meshing with said externally toothed reaction gear.

A multiple power path, concentric speed reducer for a wheel drive, comprising rotatable shaft means, a motor for driving said shaft means, stationary axle means disposed coaxially around said shaft means, housing means concentric with said shaft means, a pinion driven by said shaft means, an externally toothed gear fixedly mounted on said axle means, and a plurality of load sharing gear trains operatively interconnecting said shaft means with said axle means, each gear train having a gear driven by said pinion, a shaft for said pinion driven gear, and a gear on the shaft of said pinion driven gear meshing with said externally toothed gear for rotating said housing means.

A multiple power path, concentric speed reducer comprising a center shaft means, an axle means disposed coaxially around said shaft means, a first pinion connected to said shaft means for rotation therewith, an externally toothed gear mounted on said axle means, and a plurality of gear trains operatively interconnecting said pinion with said gear mounted on said axle means for distributing the load transmitted between said shaft means and said axle means, producing relative rotation between said shaft means and axle means, each gear train having a first gear engaging said pinion, a shaft for said first gear, a second pinion mounted on the shaft for said first gear and having two sets of gear teeth thereon, a pair of second gears engaging the sets of teeth on said second pinion, shafts for said pair of gears, and gears on the shafts for said pair of gears meshing with said externally toothed gear on said axle means.

A multiple power path, concentric speed reducer comprising rotatable shaft means, axle means disposed coaxially around said shaft means, a pinion driven by said shaft means, an externally toothed gear mounted on said axle means, and a plurality of load sharing gear trains operatively interconnecting said shaft means with said gear mounted on said axle means for producing relative rotation between said shaft means and axle means, each gear train having a gear engaging said pinion, a shaft for said pinion driven gear, and a gear on the shaft of said pinion driven gear meshing with said externally toothed gear on said axle means.

A multiple power path, concentric speed reducer comprising rotatable shaft means, an axle means disposed coaxially around said shaft means, a first pinion having two sets of gear teeth thereon mounted on said shaft means for rotation therewith, an externally toothed gear mounted on said axle means, a plurality of load sharing gear trains operatively interconnecting said pinion with said gear mounted on said axle means and being in equally spaced relationship around said shaft means, each gear train having a first gear engaging one of the sets of gear teeth on said pinion, a shaft for said first gear, and a gear driven by the shaft of said first gear meshing with said externally toothed gear on said axle means for distributing the load transmitted between said shaft means and said axle means and producing relative rotation between said shaft means and axle means.

A multiple power path, concentric speed reducer comprising rotatable shaft means, axle means disposed coaxially around said shaft means, an externally toothed gear mounted on one of said means, and a plurality of load sharing gear trains operatively interconnecting the other of said means with said externally toothed gear and being in equally spaced relationship around said center shaft means for producing relative rotation between said shaft means and axle means.