IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0386239
(2003-03-11)
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발명자
/ 주소 |
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인용정보 |
피인용 횟수 :
49 인용 특허 :
10 |
초록
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A collapsible and portable cart for universal use in a wide variety of residential and commercial environments, transporting different and various items, while shopping, gardening, laundry, transporting boxes or luggage, etc. The cart has base portion with wheels, which enable to move over the groun
A collapsible and portable cart for universal use in a wide variety of residential and commercial environments, transporting different and various items, while shopping, gardening, laundry, transporting boxes or luggage, etc. The cart has base portion with wheels, which enable to move over the ground and a first foldable basket for heavy loads; and the rapper portion, that has a second foldable basket. Base portion is pivotally connected to the upper portion by link arms and secured by locking mechanisms. Both baskets have locking mechanism to keep the foldable screens in an upright position. The portable universal cart includes a receptacle with compartments, having different devices, to make the use of the cart more pleasing, safe and with more comfort for the user. The portable universal cart has different configurations according the user's need.
대표청구항
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1. A portable universal cart, comprising:a base portion having a framework, said framework having an incline pedal attached, whereby downward pressure on the incline pedal inclines the framework, retractable wheels attached to the framework, at least one wheel having a brake, and two lower link arms
1. A portable universal cart, comprising:a base portion having a framework, said framework having an incline pedal attached, whereby downward pressure on the incline pedal inclines the framework, retractable wheels attached to the framework, at least one wheel having a brake, and two lower link arms pivotally attached to the framework, and linked via a rod at the non-pivoting ends of the lower link arms, said lower link arms having a lower link arm locking mechanism for locking the lower link arms in an upright position; a foldable base basket having lateral, front, and rear foldable base basket screens, the screens pivotally attached to the framework, and a base basket locking mechanism for locking the foldable screens, in an upright position, thereby forming the base basket; an upper portion having upper link arms pivotally attached to the lower link arms, and linked, via an upper rod at the non-pivoting ends of the upper link arms, said rod having rubber pads for a user to grasp and push the portable universal cart, said upper link arms having an upper link arm locking mechanism for locking the upper link arms in an upright position; a foldable upper basket having lateral, front, rear and bottom foldable upper basket screens pivotally attach to the bottom foldable upper basket screen, and an upper basket locking mechanism for locking the foldable upper screens in an upright position thereby forming the upper basket; and a receptacle fastened to the upper link arms, said receptacle having a plurality of compartments adapted for securing various items. 2. The cart of claim 1, wherein the lower link arm locking mechanism comprises:a part, said part having a protuberance with a curved surface; and a spring hinge attaching the part to the base portion, whereby when said lower link arms move upward, the lower link arms slide over the curved surface of the part, thereby pushing the part against the spring hinge until the lower link arms move past the curved surface and the spring hinge returns the pail to its pre-pushed position. 3. The cart of claim 1, the upper link arm locking mechanism comprising:a U-shaped rod secured to the pivoting ends of the upper link arms; a spring grip having fixed and curved ends, the spring grip fixed and rotatable around the U-shaped rod at the fixed end of the spring grip, and the curved end grasping the rod of the lower link arms for locking the upper link arms in an upright position. 4. The cart of claim 1, further comprising:a bottom base basket screen attached to the framework; and hinges attaching the lateral, front, and tear foldable base basket screens to the bottom base basket screen. 5. The cart of claim 1, wherein the bottom and rear foldable upper basket screens arc pivotally attached to the upper link arms.6. The cart of claim 1, wherein the baskets, upper portions and lower portions are foldable.7. The cart of claim 1, wherein the base basket locking mechanism further comprises:U-shaped banded plates secured to each of the lateral foldable base basket screens; iron plates, one on each of the front and rear foldable base basket screen; and magnets attached to each of the U-shaped bonded plates, whereby when the foldable base basket screens are in an upright position the magnets of the U-shaped banded plates attract and hold the iron plates of the front and rear foldable base basket screen. 8. The cart of claim 1, wherein the upper basket locking mechanism further comprises:U-shaped banded plates secured to each of the lateral foldable upper basket screens; iron plates, one on each of the front and rear foldable upper basket screen and magnets attached to each of the U-shaped bended plates, whereby when the foldable upper basket screens are in an upright position the magnets of the U-shaped bended plates attract and hold the iron plates of the front and rear foldable upper basket screen. 9. The cart of claim 1, further comprising:lateral upper basket screen locks, at least one pivotally attached to each of the upper link arms, said lateral upper basket screen locks having a U-shaped clamp for engaging an edge of a lateral foldable upper basket screen; and a spring bolt recessed in the U-shaped clamp for holding the edge of a lateral foldable upper basket screen. 10. The cart of claim 1, wherein the incline pedal is attached to the framework ear the rear wheels, whereby downward pressure on the incline pedal pivots the cart around the rear wheels, thereby raising the front of the cart.11. The cart of claim 10, wherein the incline pedal has a length and shape that prevents the cart from tilting over.12. The cart of claim 1, wherein the compartments of the receptacle are selected from the group of compartments consisting of an umbrella compartment, a beverage compartment, a mirror compartment and key-lockable compartment.13. The cart of claim 1, further comprising:protective pads, attached to the base portion and the upper portion; and reflective surfaces attached to the base portion and the upper portion. 14. The cart of claim 1, wherein the foldable base basket and the foldable upper basket are both open.15. The cart of claim 1, wherein the foldable base basket and the foldable upper basket are both closed.16. The cart of claim 1, wherein the foldable base basket and the foldable upper basket are in opposite states, one being open, the other closed.
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