Spur gear power sharing gear sets

A gear transmission comprising:

• a drive shaft having a first end, a second end and an axis;
• a spline helical cut driven shaft disposed parallel to said drive shaft, said spline helical cut driven shaft having a first end, a second end and an axis, wherein the axis of said spline helical cut driven shaft is parallel to the axis of said drive shaft;
• at least one set of spur gears, said set of spur gears comprising:
• a pair of spur drive gears mounted on said drive shaft for rotation by said drive shaft;
• a pair of spur driven gears mounted on said spline helical cut driven shaft for rotation by and, when necessary, axial movement on said spline helical cut driven shaft;
• said pair of spur drive gears comprising a first spur drive gear half and a second spur drive gear half;
• said pair of spur driven gears comprising a first spur driven gear half and a second spur driven gear half;
• said first spur drive gear half engaging said first spur driven gear half for rotating said first spur driven gear half and said second spur drive gear half engaging said second spur driven gear half for rotating said second spur driven gear half;
• said first spur driven gear half being a first cylinder member having a first helical cut spline provided on an inner diameter of said first spur driven gear half cylindrical member, with said inner diameter first helical cut spline of said first spur driven gear half cylindrical member engaging a first helical cut spline provided on an outer diameter of said drive shaft for rotation of said spline helical cut driven shaft by rotation of said first spur driven gear half and for permitting axial movement of said first spur driven gear half on said spline helical cut driven shaft;
• said second spur driven gear half being a second cylindrical member having a second helical cut spline provided on an inner diameter of said second spur driven gear half cylindrical member, with said inner diameter second helical cut spline of said second spur driven gear half cylindrical member engaging a second helical cut spline provided on an outer diameter of said spline helical cut driven shaft for rotation of said spline helical cut driven shaft by rotation of said second spur driven gear half and for permitting axial movement of said second spur driven gear half on said spline helical cut driven shaft;
• wherein said helical cut splines are selected whereby said first spur driven gear half and said second spur driven gear half of said set move axially on said spline helical cut driven shaft toward one another on said spline helical cut driven shaft in response to rotation of said spline helical cut driven shaft.

A gear transmission comprising:

• a spline helical cut drive shaft having a first end, a second end and an axis;
• a driven shaft disposed parallel to said spline helical cut drive shaft, said driven shaft having a first end, a second end and an axis, wherein the axis of said driven shaft is parallel to the axis of said spline helical cut drive shaft;
• at least two sets of spur gears, each set of spur gears comprising:
• a pair of spur drive gears mounted on said spline helical cut drive shaft for rotation by and, when necessary, axial movement on said spline helical cut drive shaft;
• a pair of spur driven gears mounted on said driven shaft for rotating said driven shaft;
• said pair of spur drive gears of each set comprising a first spur drive gear half and a second spur drive gear half;
• said pair of spur driven gears of each set comprising a first spur driven gear half and a second spur driven gear half;
• said first spur drive gear half of each set engaging said first spur driven gear half of each set for rotating said first spur driven gear half of each set and said second spur drive gear half of each set engaging said second spur driven gear half of each set for rotating said second spur driven gear half of each set;
• said first spur drive gear half of each set being a first cylindrical member having a first helical cut spline provided on an inner diameter of said first spur drive gear half cylindrical member, with said inner diameter first helical cut spline of said first spur drive gear half cylindrical member engaging a first helical cut spline provided on an outer diameter of said spline helical cut drive shaft for rotation of said first spur drive gear half by rotation of said spline helical cut drive shaft and for permitting axial movement of said first spur drive gear half on said spline helical cut drive shaft;
• said second spur drive gear half of each set being a second cylindrical member having a second helical cut spline provided on an inner diameter of said second spur drive gear half cylindrical member, with said inner diameter second helical cut spline of said second spur drive gear half cylindrical member engaging a second helical cut spline provided on an outer diameter of said spline helical cut drive shaft for rotation of said second spur drive gear half by rotation of said spline helical cut drive shaft and for permitting axial movement of said second spur drive gear half on said spline helical cut drive shaft;
• wherein said helical cut splines are selected whereby said first spur drive gear half of each set and said second spur drive gear half of each set move axially on said spline helical cut drive shaft toward one another on said spline helical cut drive shaft in response to rotation of said spline helical cut drive shaft.

A gear transmission comprising:

• a drive shaft having a first end, a second end and an axis;
• a spline helical cut driven shaft disposed parallel to said drive shaft, said spline helical cut driven shaft having a first end, a second end and an axis, wherein the axis of said spline helical cut driven shaft is parallel to the axis of said drive shaft;
• at least two sets of spur gears, each set of spur gears comprising:
• a pair of spur drive gears mounted on said drive shaft for rotation by said drive shaft;
• a pair of spur driven gears mounted on said spline helical cut driven shaft for rotation by and, when necessary, axial movement on, said spline helical cut driven shaft;
• said pair of spur drive gears of each set comprising a first spur drive gear half and a second spur drive gear half;
• said pair of spur driven gears of each set comprising a first spur driven gear half and a second spur driven gear half;
• said first spur drive gear half of each set engaging said first spur driven gear half of each set for rotating said first spur driven gear half of each set and said second spur drive gear half of each set engaging said second spur driven gear half of each set for rotating said second spur driven gear half of each set;
• said first spur driven gear half of each set being a first cylindrical member having a first helical cut spline provided on an inner diameter of said first spur driven gear half cylindrical member, with said inner diameter first helical cut spline of said first spur driven gear half cylindrical member engaging an outer diameter of said drive shaft for rotation of said spline helical cut driven shaft by rotation of said first spur driven gear half and for permitting axial movement of said first spur driven gear half on said spline helical cut driven shaft;
• said second spur driven gear half of each set being a second cylindrical member having a second helical cut spline provided on an inner diameter of said second spur driven gear half cylindrical member, with said inner diameter second helical cut spline of said second spur driven gear half cylindrical member engaging a second helical cut spline provided on an outer diameter of said spline helical cut driven shaft for rotation of said spline helical cut driven shaft by rotation of said second spur driven gear half and for permitting axial movement of said second spur driven gear half on said spline helical cut driven shaft;
• wherein said helical cut splines are selected whereby said first spur driven gear half of each set and said second spur driven gear half of each set move axially on said spline helical cut driven shaft toward one another on said spline helical cut driven shaft in response to rotation of said spline helical cut driven shaft.