Track support for pallet carrier

Claim 1

IN A MOTORIZED VEHICLE HAVING: (A) A MAIN FRAME HAVING A FRONT END AND A REAR END, (B) A LOAD-SUPPORTING BED WHICH ISDIRECTLY ABOVE THE MAIN FRAME AND ATTACHED THERETO, (C) A CANTILEVERED FRONT SECTION, ATTACHED TO SAID MAIN FRAME AT THE FRONT END, WHICH SUPPORTS AN OPERATOR STATION AND A POWER-GENERATING MEANS, AND (D) ROTATABLE TRACK ASSEMBLIES, FOR SUPPORTING AND PROPELLING THE MOTORIZED VEHICLE, WHICH ARE ATTACHED TO THE MAIN FRAME ON EACH SIDE THEREOF AND ARE CONNECTED TO THE POWER-GENERATING MEANS, EACH ASSEMBLY COMPRISING: (1) A SPROCKET DRIVING WHEEL WHICH IS ROTATABLY ATTACHED TO THE MAIN FRAME NEAR THE FRONT END AND WHICH IS CONNECTED THROUGH POWER-TRANSMITTING MEANS TO THE POWER-GENERATING MEANS, (2) AN IDLER WHEEL WHICH IS ROTATABLY ATTACHED TO THE MAIN FRAME NEAR THE REAR END BY MEANS OF A SPRING-LOADED TRACK-TIGHTENING ARM, (3) AN ENDLESS TRACK WHICH ENCIRCLES AND ENGAGES THE SPROCKET DRIVING WHEEL AND THE IDLER WHEEL, RECEIVING POWER FROM THE SPROCJET DRIVING WHEELS AND CONTACTING THE GROUND ON ITS LOWER RUN BETWEEN SAID WHEELS, SAID (4) A BOGIE CLUSTER ASSEMBLY COMPRISING: (A) A BOGIE ROLLERS, HAVING AXIAL SHAFTS, WHICH RIDE UPON THE TRACK ON ITS LOWSER RUN BETWEEN SAID WHEELS IN FORWARD AND REARWARD PAIRS, (B) BOGIE FRAMES, LINKING TOGETHER THE ROLLERS OF EACH ROLLER PAIR ON EACH SIDE THEREOF, WHICH ARE ROTATABLY ATTACHED AT EACH END TO SAID AXIAL SHAFTS, (C) A BOGIE FRAME BRACKET WHICH IS RIGIDLY ATTACHED TO THE MAIN FRAME AT A SELECTED AWNGLE THERETO, (D) A CRAB, MOUNTED WITH BOGIE FRAME BRACKET, WHICH HAS FOUR LEGS EXTENDING IN FORWARD AND REARWARD PAIRS APPROXIMATELY PARALLEL WITH THE TRACKS AND ASTRADDLE OF THE ROLLERS, (E) DUAL VOLUTE SPRINGS, MOUNTED WITHIN THE BOGIE FRAME BRACKET, WHICH REST UPON THE CRAB, AND (F) BOGIE ARMS WHICH ARE PIVOTALLY ATTACHED TO THE FRAME BRACKEWT AT ONE END AND WHICH ARE PIVOTALLY ATTACHED AT THE OTHER END TO THE BOGIE FRAMES BETWEEN THE ROLLERS OF EACH PAIR OF BOGIE ROLERS AND ON EACH SIDE THEREOF, THE IMPROVEMENT IN THE FRONT END OF EACH ROTATABLE TRACK ASSEMBLY, WHICH COMPRISES: (A) RIGID BOGIE GUSSETS, LOCATED ABOVE THE FORWARD PAIR OF LEGS OF THE CRAB AND RIGIDLY ATTACHED TO THE FRONT EDGES OF THE BOGIE FRAME BRACKET, WHICH RESTRICT UPWARD MOVEMENTS OF THE FORWARD PAIR OF LEGS OF THE CRAB AND OF THE FRONT PAIR OF BOGIE ARMS, AND (B) RIGID BOGIE LOCKING BLOCKS, ATTACHED TO EACH BOGIE ARM AND EXTENDING HORIZONTALLY FORWARD ABOVE EACH BOGIE FRAME, WHICH RESTRICT UPWARD MOVEMENT OF THE FRONT ROLLER OF THE FORWARD PAIR OF BOGIE ROLLERS, WHEREBY THE FORWARD LONGITUDINAL PIVOT OF SAID MOTORIZED VEHICLE IS MAINTAINED AT THE FRONT BOGIE ROLLER.