Rough terrain cart for a wheel chair

A rough terrain cart for a wheel chair, the cart comprising:

• a frame operable to support a wheel chair and a wheel chair user;
• a pair of cart drive wheels rotationally mounted to a rear portion of the frame;
• a pair of cart steering wheels rotationally mounted to a front portion of the frame;
• a locking mechanism engaged with the frame, the locking mechanism operable to secure the wheel chair to the cart;
• a rotational mechanism engaged with the frame, the rotational mechanism configured to support a pair of wheel chair drive wheels of the wheel chair and operable to enable the wheel chair drive wheels to rotate when the wheel chair is secured to the cart by the locking mechanism;
• a transmission system engaged with the frame, the transmission system connectable to the wheel chair drive wheels, the transmission system operable to transmit torque from the wheel chair drive wheels to the cart drive wheels, the pair of cart drive wheels and transmission system each being operable to be adjustably positioned from a first position in a rear portion of the frame to a second position in an intermediate portion of the frame;
• and
• a steering platform mounted on the front portion of the frame, the steering platform connected to the pair of cart steering wheels of the cart and connectable to a front wheel of the wheel chair, the steering platform operable to transfer steering motion from the front wheel of the wheel chair to the pair of cart steering wheels.

A rough terrain cart for a wheel chair, the cart comprising:

• a frame operable to support a wheel chair and a wheel chair user;
• a pair of cart drive wheels rotationally mounted to the frame;
• a rotational mechanism engaged with the frame, the rotational mechanism configured to support a pair of wheel chair drive wheels of the wheel chair and operable to enable the wheel chair drive wheels to rotate when the wheel chair is supported by the cart,
• wherein the rotational mechanism comprises a plurality of rollers sized to receive and support the pair of wheel chair drive wheels and to enable the wheel chair drive wheels to rotate thereon, and
• wherein the rotational mechanism comprises a roller platform upon which the plurality of rollers are mounted, the roller platform being removably attached to the frame;
• and
• a transmission system engaged with the frame, the transmission system connectable to the wheel chair drive wheels, the transmission system operable to transmit torque from the wheel chair drive wheels to the cart drive wheels.

A rough terrain cart for a wheel chair, the cart comprising:

• a frame operable to support a wheel chair and a wheel chair user;
• a pair of cart drive wheels rotationally mounted to the frame;
• a rotational mechanism engaged with the frame, the rotational mechanism configured to support a pair of wheel chair drive wheels of the wheel chair and operable to enable the wheel chair drive wheels to rotate when the wheel chair is supported by the cart;
• a transmission system engaged with the frame, the transmission system connectable to the wheel chair drive wheels, the transmission system operable to transmit torque from the wheel chair drive wheels to the cart drive wheels;
• a hinged joint system positioned in the cart frame, the hinged joint system operable to fold the cart frame from a frame open position to a frame closed position;
• and
• a support ramp engaged with the frame, the support ramp being operable to cover a portion of the hinged joint system when the frame is in the open position to enable a front wheel of the wheel chair to roll over the support ramp without contacting the hinged joint system.