Hydraulic Drive System

Abstract

A hydraulic drive system is provided and generally includes a first rotor assembly arranged along a first side of the frame and having a first rotor and a first drive shaft extending through and connectable with the first rotor, a first motor assembly disposed along the first side of the frame and positioned linearly the first rotor assembly and a second rotor assembly arranged along a second side of the frame that is opposite the first side and having a second rotor and a second drive shaft extending through and connectable with the second rotor.

What is claimed is: 
     
         1 . A trailer, comprising:
 a frame with a pair of drive wheels positioned on opposite sides thereof; and   a hydraulic drive system attached to an underside of the frame, the hydraulic drive system having:
 a first rotor assembly arranged along a first side of the frame and having a first rotor and a first drive shaft extending through and connectable with the first rotor; 
 a first motor assembly disposed along the first side of the frame and positioned linearly the first rotor assembly and having a first motor actuator; 
 a first lever assembly to reversibly engage and disengage the motor actuator with the first drive shaft; 
 a first drive wheel of the pair of drive wheels connected to the first rotor; 
 a second rotor assembly arranged along a second side of the frame that is opposite the first side and having a second rotor and a second drive shaft extending through and connectable with the second rotor; 
 a second motor assembly disposed along the second side of the frame and positioned linearly the second rotor assembly and having a second motor actuator; 
 a second lever assembly to reversibly engage and disengage the motor actuator with the first drive shaft, the second lever assembly independent of the first lever assembly; and 
 a second drive wheel of the pair of drive wheels connected to the second rotor. 
   
     
     
         2 . The trailer of  claim 1 , further comprising an engagement assembly moving the first motor actuator toward and away from the first rotor assembly to respectively engage and disengage therewith and moving the second motor actuator toward and away from the second rotor assembly to respectively engage and disengage therewith. 
     
     
         3 . The trailer of  claim 1 , wherein the first motor actuator includes a plurality of motor actuator teeth disposed on an end thereof. 
     
     
         4 . The trailer of  claim 3 , wherein the first rotor actuator includes a plurality of rotor actuator teeth disposed on an end. 
     
     
         5 . The trailer of  claim 4 , wherein the plurality of motor actuator teeth correspond with and separated from the plurality of rotor actuator teeth when positioned in a disengagement position. 
     
     
         6 . The trailer of  claim 5 , wherein the plurality of motor actuator teeth correspond with and engage the plurality of rotor actuator teeth when positioned in an engagement position. 
     
     
         7 . The trailer of  claim 1 , wherein the first hydraulic motor is connected to a planetary gear drive by a motor shaft extends from the hydraulic motor and into the planetary gear drive. 
     
     
         8 . The trailer of  claim 7 , wherein the first hydraulic motor operates the planetary gear drive. 
     
     
         9 . The trailer of  claim 8 , wherein the first motor actuator is positioned on an opposite side of the planetary gear drive with respect to the hydraulic motor. 
     
     
         10 . The trailer of  claim 9 , wherein the first rotor actuator is positioned in a bell housing of the first rotor assembly. 
     
     
         11 . The trailer of  claim 10 , wherein the first rotor actuator includes a rotor actuator spline engaged with the first drive shaft such that rotation of the first rotor actuator imparts rotation to the first drive shaft. 
     
     
         12 . The trailer of  claim 11 , wherein the first drive shaft is secured to a hub housing fixed to the first rotor.