System for powering a trailer
First Claim
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1. A system for powering a trailer comprising:
- a trailer frame;
means for connecting the trailer frame to a towing vehicle;
at least one wheel member rotatably mounted on each of opposing sides of the trailer frame for supporting and driving the trailer frame;
at least two hydraulic motors, each for driving at least one wheel member of one of the opposing sides of the trailer frame;
means for supplying pressurized hydraulic fluid from the towing vehicle to the hydraulic motors; and
wherein the hydraulic fluid supply means directs pressurized hydraulic fluid to the hydraulic motors in parallel and without controllinig the flow rate of fluid to the motors, to facilitate turning the trailer by allowing variation of the flow rate of fluid to the motors and their corresponding speed during a turn while allowing the motors to provide substantially equal torque to the wheel members.
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Abstract
The present invention is a system for powering a trailer. The system includes a trailer having a tongue for connecting the trailer to a towing vehicle. The trailer is supported by at least one wheel mounted on each of opposing sides of the trailer frame. Mounted on the trailer is a motor for driving the trailer wheels. Power is supplied to the motor from the towing vehicle.
28 Citations
12 Claims
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1. A system for powering a trailer comprising:
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a trailer frame; means for connecting the trailer frame to a towing vehicle; at least one wheel member rotatably mounted on each of opposing sides of the trailer frame for supporting and driving the trailer frame; at least two hydraulic motors, each for driving at least one wheel member of one of the opposing sides of the trailer frame; means for supplying pressurized hydraulic fluid from the towing vehicle to the hydraulic motors; and wherein the hydraulic fluid supply means directs pressurized hydraulic fluid to the hydraulic motors in parallel and without controllinig the flow rate of fluid to the motors, to facilitate turning the trailer by allowing variation of the flow rate of fluid to the motors and their corresponding speed during a turn while allowing the motors to provide substantially equal torque to the wheel members. - View Dependent Claims (2, 3, 4, 5)
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6. A system for powering a trailer comprising:
- a trailer frame;
at least one wheel member rotatably mounted on opposing sides of the frame; at least two hydraulic motors mounted on the trailer frame for driving one or more wheel members on opposing sides of the frame; and hydraulic pump means for supplying pressurized hydraulic fluid to the hydraulic motors, including means supplying hydraulic fluid to the motors in parallel from a common hydraulic fluid supply line without controlling the flow rate of fluid to the motors, to facilitate turning the trailer by allowing variation of the flow rate of fluid to the motors at their corresponding speed during a turn while allowing the motors to provide substantially equal torque to the wheel members, such that during movement through a turn, the speed of the hydraulic motor driving the wheel members on the inside of the turn will decrease and the speed of the wheel members on the outside of the turn will automatically increase, causing an inverse variance in the speed of the driven wheel members on opposing sides of the trailer frame. - View Dependent Claims (7, 8, 9, 10, 11)
- a trailer frame;
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12. A system for powering a trailer comprising:
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a trailer frame; at least one wheel member rotatably mounted on opposing sides of the frame; at least two hydraulic motors mounted on the trailer frame for driving one or more wheel members on opposing sides of the frame; and hydraulic pump means for supplying pressurized hydraulic fluid to the hydraulic motors, including a variable displacement pump and displacement control means varying the displacement of the pump to substantially maintain the pressure of hydraulic fluids supplied to the hydraulic motors at a relatively constant predetermined level to maintain the torque output of the hydraulic motors relatively constant.
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Specification