Transmission device

Abstract

A transmission is provided including a splitter shaft having a concentric cavity defined in a distal end thereof and an outer wall surrounding the cavity. The outer wall has an increased thickness in order to reduce failure and fracturing in the outer wall area. A bearing hub adapted for supporting a larger bearing is also provided. The improved transmission may include a system for utilizing existing lubrication lines in order to lubricate a center section of the transmission. The components of the present invention may be provided as part of a kit for retrofitting an existing transmission in order to reduce failures and increase lifespan.

What is claimed is: 
     
         1 . A transmission comprising:
 a splitter shaft having a concentric cavity defined in a distal end thereof and an outer wall extending around said cavity, said outer wall having a radial thickness of about 0.65 inches;   a main shaft having a concentric pilot member extending axially from a distal end thereof and extending into said cavity of said splitter shaft; and   a bearing located radially between said pilot member and an inner surface of said outer wall, said inner surface delimiting a diameter of said cavity in a radial direction.   
     
     
         2 . The transmission of  claim 1 , wherein said distal end of said splitter shaft has an outer diameter and wherein a ratio of said splitter shaft outer diameter to said cavity diameter is between about 1.5 and 2.5. 
     
     
         3 . The transmission of  claim 1 , wherein said distal end of said splitter shaft has an outer diameter and wherein a ratio of said splitter shaft outer diameter to said cavity diameter is about 2.0. 
     
     
         4 . The transmission of  claim 1 , wherein said distal end of said splitter shaft has an outer diameter of about 2.6 inches and said cavity diameter is about 1.3 inches. 
     
     
         5 . The transmission of  claim 1 , wherein said pilot member has an outer diameter and wherein a ratio of said pilot member outer diameter to said cavity diameter is between about 0.70 and 0.85. 
     
     
         6 . The transmission of  claim 1 , wherein said pilot member has an outer diameter of about 0.99 inches and said cavity has an outer diameter of about 1.26 inches. 
     
     
         7 . The transmission of  claim 1 , wherein said splitter shaft is a replacement shaft that replaces an existing splitter shaft of said transmission having an outer wall with a radial thickness of about 0.26 inches. 
     
     
         8 . The improved transmission of  claim 1  further comprising a bearing hub having an axially-extending circular flange adapted for supporting an outer race of a bearing, said flange having an inner diameter of between about 5.0 inches and 6.0 inches. 
     
     
         9 . The transmission of  claim 8 , wherein said flange has an inner diameter of about 5.5 inches. 
     
     
         10 . The improved transmission of  claim 8 , wherein said bearing hub is a replacement hub that replaces an existing bearing hub of said transmission having a flange with an inner diameter of about 5.1 inches. 
     
     
         11 . The transmission of  claim 1  further comprising a threaded connection attached to an existing lubrication line, a tube attached to said threaded connection and a spray orifice attached to a terminal end of said tube.