IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0110969
(2011-05-19)
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등록번호 |
US-8746377
(2014-06-10)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
19 |
초록
▼
An electric utility cart to assist in transportation and hauling various items is disclosed. The utility cart includes a handle with a throttle to control the speed of the cart during use. A single 360° rotatable front wheel in combination with a pair of wide rear wheels which are joined to a differ
An electric utility cart to assist in transportation and hauling various items is disclosed. The utility cart includes a handle with a throttle to control the speed of the cart during use. A single 360° rotatable front wheel in combination with a pair of wide rear wheels which are joined to a differential allows the cart to turn in tight circles. A directional switch proximate the handle allows the user to drive the cart in either a forward or rearward direction. An auxiliary rack can be mounted on the cart as needed for carrying surf boards or other large items. A hitch rod allows the cart to be suspended and transported by a conventional vehicle such as a car, SUV or pickup truck having a typical tubular hitch.
대표청구항
▼
1. A utility cart comprising: a frame, a hitch bar, said hitch bar for connection to a vehicle hitch, said hitch bar comprising a T-head, said T-head comprises a pair of grippers, said pair of grippers spaced along said T-head for frictionally engaging said frame, a retaining rail, said retaining ra
1. A utility cart comprising: a frame, a hitch bar, said hitch bar for connection to a vehicle hitch, said hitch bar comprising a T-head, said T-head comprises a pair of grippers, said pair of grippers spaced along said T-head for frictionally engaging said frame, a retaining rail, said retaining rail joined to said frame and spaced therefrom, a rear axle, said rear axle joined to said frame, a pair of wheels, said pair of wheels attached to said rear axle, a differential, said differential affixed to said rear axle between said pair of wheels, an axle sprocket, an electric motor, said electric motor connected to said axle sprocket, a power source, said power source connected to said electric motor, a controller, said controller connected to said power source and to said electric motor, a pivotable front wheel, said front wheel attached to said frame, a tongue, a tongue sheath, said tongue sheath attached to said frame, said tongue removably mounted in said tongue sheath, a handle, said handle affixed to said tongue, said handle defining the front of said cart, a variable-speed throttle, said throttle connected to said handle for controlling said electric motor, and a bi-directional switch, said bi-directional switch positioned proximate said handle for changing the rotational direction of said axle sprocket, wherein activating said throttle causes said pair of wheels attached to said rear axle to drive said cart in the direction of said front wheel. 2. The utility cart of claim 1 further comprising a rack, said rack comprising a plurality of legs, each of said plurality of legs having a proximal end and a distal end, a rectangular border, each of said plurality of legs affixed at the proximal end to said rectangular border, a plurality of angled supports, each of said plurality of angled supports positioned proximate the proximal ends of different ones of said plurality of legs, said plurality of legs each removably attached to said frame, wherein said angled supports are oriented to receive an article between said plurality of angled supports. 3. The utility cart of claim 1 further comprising a transmission, said electric motor connected to said transmission, a motor sprocket, said motor sprocket joined to said transmission, an endless chain, said endless chain connected to said motor sprocket and to said axle sprocket. 4. The utility cart of claim 1 further comprising a tubular holder, said tubular holder joined to said frame and to said retaining rail. 5. The utility cart of claim 1 wherein said tongue is L-shaped. 6. A utility cart comprising: a frame, a retaining rail, said retaining rail joined to said frame and spaced therefrom, a rear axle, said rear axle joined to said frame, a pair of wheels, said pair of wheels attached to said rear axle, a differential, said differential affixed to said rear axle between said pair of wheels, an axle sprocket, an electric motor, said electric motor connected to said axle sprocket, a power source, said power source connected to said electric motor, a controller, said controller connected to said power source and to said electric motor, a pivotable front wheel, said front wheel attached to said frame, a tongue, a tongue sheath, said tongue sheath attached to said frame, said tongue removably mounted in said tongue sheath, a handle, said handle affixed to said tongue, said handle defining the front of said cart, a variable-speed throttle, said throttle connected to said handle for controlling said electric motor, and a bi-directional switch, said bi-directional switch positioned proximate said handle for changing the rotational direction of said axle sprocket, a rack, said rack comprising a plurality of legs, each of said plurality of legs having a proximal end and a distal end, a rectangular border, each of said plurality of legs affixed at the proximal end to said rectangular border, a plurality of angled supports, each of said plurality of angled supports positioned proximate the proximal ends of different ones of said plurality of legs, said plurality of legs each removably attached to said frame, a plurality of clevises, one each of said plurality of clevises attached at the distal end of different ones of said plurality of legs, wherein said angled supports are oriented to receive an article between said plurality of angled supports, wherein activating said throttle causes said pair of wheels attached to said rear axle to drive said cart in the direction of said front wheel. 7. The utility cart of claim 6 wherein each of said plurality of clevises defines a pin aperture, a plurality of pins, each of said plurality of pins positioned in different ones of said pin apertures. 8. The utility cart of claim 6 further comprising a transmission, said electric motor connected to said transmission, a motor sprocket, said motor sprocket joined to said transmission, an endless chain, said endless chain connected to said motor sprocket and to said axle sprocket. 9. The utility cart of claim 6 further comprising a tubular holder, said tubular holder joined to said frame and to said retaining rail. 10. The utility cart of claim 6 wherein said tongue is L-shaped. 11. A utility cart comprising: a frame, a retaining rail, said retaining rail joined to said frame and spaced therefrom, a rear axle, said rear axle joined to said frame, a pair of wheels, said pair of wheels attached to said rear axle, a differential, said differential affixed to said rear axle between said pair of wheels, an axle sprocket, an electric motor, said electric motor connected to said axle sprocket, a power source, said power source connected to said electric motor, a controller, said controller connected to said power source and to said electric motor, a pivotable front wheel, said front wheel attached to said frame, a tongue, a tongue sheath, said tongue sheath attached to said frame, said tongue removably mounted in said tongue sheath, a handle, said handle affixed to said tongue, said handle defining the front of said cart, a variable-speed rotatable throttle, said rotatable throttle connected to said handle for controlling said electric motor, and a bi-directional switch, said bi-directional switch positioned proximate said handle for changing the rotational direction of said axle sprocket, a sheath aperture defined by said tongue sheath, a pin, a finger ring, said finger ring connected to said pin, said sheath aperture sized to receive said pin, a pair of connectors, said pair of connectors in communication with said rotatable throttle and positioned abutting said tongue sheath, and a pair of U-shaped brackets, said U-shaped brackets affixed to said frame, said U-shaped brackets for attaching said rear axle to said frame, wherein activating said throttle causes said pair of wheels attached to said rear axle to drive said cart in the direction of said front wheel. 12. The utility cart of claim 11 further comprising a rack, said rack comprising a plurality of legs, each of said plurality of legs having a proximal end and a distal end, a rectangular border, each of said plurality of legs affixed at the proximal end to said rectangular border, a plurality of angled supports, each of said plurality of angled supports positioned proximate the proximal ends of different ones of said plurality of legs, said plurality of legs each removably attached to said frame, wherein said angled supports are oriented to receive an article between said plurality of angled supports. 13. The utility cart of claim 12 further comprising a plurality of clevises, one each of said plurality of clevises attached at the distal end of different ones of said plurality of legs. 14. The utility cart of claim 13 wherein each of said plurality of clevises defines a pin aperture, a plurality of pins, each of said plurality of pins positioned in different ones of said pin apertures. 15. The utility cart of claim 11 further comprising a transmission, said electric motor connected to said transmission, a motor sprocket, said motor sprocket joined to said transmission, an endless chain, said endless chain connected to said motor sprocket and to said axle sprocket. 16. The utility cart of claim 11 further comprising a tubular holder, said tubular holder joined to said frame and to said retaining rail. 17. The utility cart of claim 11 wherein said tongue is L-shaped. 18. The utility cart of claim 11 wherein said power source comprises a pair of batteries. 19. The utility cart of claim 11 further comprising an on/off switch, said on/off switch connected to said controller.
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