Spur gear power sharing gear sets

A gear transmission comprising:

• a drive shaft having a first end, a second end and an axis;
• a driven shaft disposed parallel to said 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 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 driven shaft for rotating said driven shaft and further mounted on said driven shaft for axial movement on said 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 driven shaft for rotation of said 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 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 driven shaft for rotation of said 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 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 driven shaft toward one another on said driven shaft in response to rotation of said driven shaft.

A gear transmission comprising:

• a drive shaft having a first end, a second end and an axis;
• a driven shaft disposed parallel to said 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 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 and further mounted on said drive shaft for axial movement on said 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 drive shaft for rotation of said first spur drive gear half by rotation of said drive shaft and for permitting axial movement of said first spur drive gear half on said 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 drive shaft for rotation of said second spur drive gear half by rotation of said drive shaft and for permitting axial movement of said second spur drive gear half on said 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 drive shaft toward one another on said drive shaft in response to rotation of said drive shaft.

A gear transmission comprising:

• a drive shaft having a first end, a second end and an axis;
• a driven shaft disposed parallel to said 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 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 driven shaft for rotating said driven shaft and further mounted on said driven shaft for axial movement on 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 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 a first helical cut spline provided on an outer diameter of said driven shaft for rotation of said 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 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 driven shaft for rotation of said 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 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 driven shaft toward one another on said driven shaft in response to rotation of said driven shaft.

A method for transmitting load in a spur gear transmission comprising:

• providing a drive shaft and a driven shaft;
• mounting at least a first pair of spur drive gears on said drive shaft and providing a helical cut spline on an inner diameter of each spur drive gear of said at least first pair of spur drive gears for rotational movement of said at least first pair of spur drive gears by said drive shaft and for axial movement of said at least first pair of spur drive gears on said drive shaft;
• mounting at least a first pair of spur driven gears on said driven shaft for rotation of said driven shaft by said at least first pair of spur driven gears;
• engaging said at least first pair of spur drive gears with said at least first pair of spur driven gears;
• providing said drive shaft with a first helical cut spline on an outer diameter of said drive shaft engaging the helical cut spline on the inner diameter of one spur drive gear of said at least first pair of spur drive gears and providing said drive shaft with a second helical cut spline on the outer diameter of said drive shaft engaging the helical cut spline on the inner diameter of the other spur drive gear of said at least first pair of spur drive gears;
• said helical cut splines selected whereby rotating said drive shaft results in causing said one spur drive gear and said other spur drive gear of said at least first pair of spur drive gears to axially move on said drive shaft toward one another resulting in balanced load transmission between each spur drive gear of said at least first pair of spur drive gears and each spur driven gear of said at least first pair of spur driven gears.

A method for transmitting load in a spur gear transmission comprising:

• providing a drive shaft and a driven shaft;
• mounting at least a first pair of spur driven gears on said driven shaft and providing a helical cut spline on an inner diameter of each spur driven gear of said at least first pair of spur driven gears for rotation of said driven shaft by said at least first pair of spur driven gears and for axial movement of said at least first pair of spur driven gears on said driven shaft;
• mounting at least first pair of spur drive gears on said drive shaft for rotation by said drive shaft;
• engaging said at least first pair of spur drive gears with said at least first pair of spur driven gears;
• providing said driven shaft with a first helical cut spline on an outer diameter of said driven shaft engaging the helical cut spline on the inner diameter of one spur driven gear of said at least first pair of spur driven gears and providing said driven shaft with a second helical cut spline on the outer diameter of said driven shaft engaging the helical cut spline on the inner diameter of the other spur driven gear of said at least first pair of spur driven gears;
• said helical cut splines selected whereby rotating said driven shaft results in causing said one spur driven gear and said other spur driven gear of said at least first pair of spur driven gears to axially move on said driven shaft toward one another resulting in balanced load transmission between each spur driven gear of said at least first pair of spur driven gears and each spur drive gear of said at least first pair of spur drive gears.