IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0072023
(2008-02-22)
|
등록번호 |
US-7543842
(2009-07-01)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
12 인용 특허 :
11 |
초록
▼
Disclosed is a portable and adjustable trailer assembly that allows for easy assembling and de-assembling, foldability, portability, requiring small storage space, multi-functional utility, retrofittable to various vehicles, and at the same time light weight and cost effective. It comprises a frame
Disclosed is a portable and adjustable trailer assembly that allows for easy assembling and de-assembling, foldability, portability, requiring small storage space, multi-functional utility, retrofittable to various vehicles, and at the same time light weight and cost effective. It comprises a frame assembly having a frame portion with front and rear ends, pivotally and hingedly coupled at its rear end to a first end of a platform portion, a second end of the platform portion coupled to a rear beam, the portions being releaseably locked with each other and folds out to configure a lateral plane when in operation, a wheel assembly mechanically coupled to the platform portion at its underneath; and a detachable and lockable drawbar assembly having first and second ends, mechanically coupled to the frame assembly at the first end and having means to connect to a tow vehicle at the second end.
대표청구항
▼
What is claimed is: 1. A portable and adjustable trailer assembly comprising: a foldable trailer platform including pivotally attached front and rear platforms; a removable drawbar assembly attachable to said trailer platform and an existing vehicle ball hitch assembly respectively, further compris
What is claimed is: 1. A portable and adjustable trailer assembly comprising: a foldable trailer platform including pivotally attached front and rear platforms; a removable drawbar assembly attachable to said trailer platform and an existing vehicle ball hitch assembly respectively, further comprising a foldable drawbar provided with a pivot connection for allowing said drawbar to selectively articulate between folded and unfolded positions; a suspension assembly operably coupled to said trailer platform, further comprising: a suspension housing; a locking mechanism connecting said housing to said rear platform; a suspension arm attached to said housing; a flexible suspension member connected to said housing and said suspension arm; a pair of suspension member anchors affixed to said suspension arm and said housing; a pivot connection disposed at said housing; and, a wheel having a plurality of propeller spokes radially positioned therein; wherein said suspension assembly biases said wheel between stored and deployed states; wherein said flexible suspension member provides a resistive force when said housing is pivoted about said pivot connection. 2. The portable and adjustable trailer assembly of claim 1, wherein said suspension assembly further comprises: a locking bar coupled to said rear platform and being provided with a locking bolt aperture; a second locking mechanism including: a locking bolt and a dowel pin perpendicularly conjoined therewith; a locking receiver formed within said rear platform; a suspension housing abutted against said locking bar and anchored to said rear platform respectively; and, a locking groove formed along an edge of said rear platform for allowing a lateral sliding motion of said second locking mechanism to thereby cause said locking bolt to slidingly move back-and-forth within said locking bolt aperture; wherein said locking bar is aligned within said locking receiver while said suspension assembly is in a deployed and perpendicular position and thereby permitting said locking bolt to interfit within said locking bolt aperture; wherein said front platform is rotatable with said rear platform while said locking bar is aligned with said locking receiver. 3. The portable and adjustable trailer assembly of claim 1, wherein said drawbar assembly comprises: a drawbar receiver connected to said rear platform and having a drawbar latch aperture formed therein; and, an engaging and latching mechanism including: a drawbar bracket latch and a drawbar latch pivotally connected thereto in such a manner that said drawbar latch is removably inserted into said drawbar latch aperture; a drawbar latching handle and a drawbar latch locking pin connected thereto, said drawbar latch locking pin being coupled to said drawbar latch bracket; and, a multi-pin female electrical receptacle formed at a distal end of said drawbar assembly and being selectively mated directly into a distal end of said drawbar receiver that is provided with a multi-pin male electrical receptacle such that power is transmitted to tail lights and licensing plate lights of said adjustable trailer assembly. 4. The portable and adjustable trailer assembly of claim 1, further comprising: a platform stiffener connected to said front platform along a longitudinal centerline thereof and spanning from a forward edge to a rear edge of said front platform; a drawbar bracket pin latch affixed to said front platform stiffener; and, a drawbar mounting bracket including a pair of "L"-shaped brackets engaged with said drawbar bracket latch. 5. The portable and adjustable trailer assembly of claim 4, wherein said rear platform comprises: a rear platform stiffener including a plurality of support members diverging forwardly towards said front platform; and, a plurality of platform clips attached to rear inside corners of said rear platform and detachably engaged with corresponding edges of said front platform when said front and rear platforms are engaged together. 6. The portable and adjustable trailer assembly of claim 1, further comprising: a protective cover assembly comprising: a tubular frame generally corresponding to an outline of said front and rear platforms respectively; a lower enclosure portion; a plurality of enclosure straps connecting said lower enclosure to said front and rear platforms respectively; wherein said front and rear platforms are provided with a plurality of slots that receive said enclosure straps therethrough; and, a storage sack for housing said tubular frame and said lower enclosure portion and said enclosure straps after disassembly. 7. The portable and adjustable trailer assembly of claim 1, wherein said drawbar assembly comprises: a motorcycle drawbar having an upward curving "S"-shaped profile providing attachment to an existing motorcycle so as to clear a rear tire portion of the existing motorcycle. 8. The portable and adjustable trailer assembly of claim 1, wherein said drawbar assembly comprises: a garden-cart drawbar having a downward curving "S"-shaped profile; a pivoting garden-cart dolly connected to said garden-cart drawbar; a pair of garden-cart wheels coupled to said dolly; and, a pivoting wagon pull handle attached to said dolly. 9. The portable and adjustable trailer assembly of claim 8, wherein said trailer platform comprises: a plurality of wagon slats providing a protective enclosure for transport of equipment along all sides of said trailer platform; and, a plurality of vertical stake poles attached to said trailer platform. 10. The portable and adjustable trailer assembly of claim 1, further comprising: a bicycle carrier affixed to an upper surface of said front and rear platforms and including: a vertical plate including a slotted female top portion directly engaged with a bicycle crank portion; a horizontal plate coupled to said vertical plate; and, a bicycle attachment mechanism securely attached to a rear edge of said rear platform and including a strap anchored to a front bicycle wheel. 11. The portable and adjustable trailer assembly of claim 1, further comprising: a snow mobile carrier comprising: a plurality of skis disposed beneath said front and rear platforms; a plurality of brackets connected to said snow skis; a plurality of front hoops attached to front ends of said snow skis; and, a pair of flexible ski straps tethered to said front hoops for maintaining said skis in a level position during transport. 12. The portable and adjustable trailer assembly of claim 1, wherein said front and rear platforms are provided with a plurality of stake pole apertures and a plurality of slots registered parallel to outer side edges of said front and rear platforms respectively. 13. A method of installing and utilizing a portable trailer assembly comprising the steps of: placing a top surface of a rear platform on a ground surface; partially deploying a front platform by forming a right-angle with said rear platform; releasing a locking mechanism located adjacent to said front platform; deploying a wheel assembly to an operating position; deploying said front platform to a coplanar position with said rear platform; securing said front and rear platforms to each other; inserting an automobile drawbar into a drawbar receiver; engaging a female electrical receptacle with a male electrical receptacle; engaging a drawbar mounting bracket with a drawbar bracket pin latch; securing a drawbar by grasping a drawbar latch handle and pulling said drawbar in an upward direction; engaging a drawbar latch into a draw bar latch aperture; inserting a drawbar latch locking pin within a corresponding slot; securing a forward portion of said drawbar by connecting said drawbar mounting bracket to said drawbar bracket latch; and, tilting said front and rear platforms forwardly until at least one wheel engages the ground surface and said front and rear platforms become aligned parallel to the ground surface. 14. The method of claim 13, further comprising the steps of: attaching said front platform to an existing vehicle; tilting said front platform by rotating said front platform with respect to said rear platform; and, attaching a protective cover assembly to said front and rear platforms. 15. The method of claim 14, further comprising the steps of: assembling a tubular frame; inserting the tubular frame in a plurality of stake pole apertures; and, attaching upper and lower enclosures to the tubular frame. 16. The method of claim 13, further comprising the step of: inserting a motorcycle drawbar assembly into a drawbar receiver. 17. The method of claim 13, further comprising the steps of: inserting a garden-cart drawbar assembly into a drawbar receiver; inserting a plurality of wagon stake poles into a plurality of corresponding stake pole apertures; and, attaching a plurality of wagon slats to the wagon stake poles. 18. The method of claim 13, further comprising the steps of: attaching a bicycle carrier to said front and rear platforms by assembling a vertical plate along a horizontal plate so as to conform to a particular length of an existing bicycle; attaching a bicycle carrier to said front and rear platforms; loading the existing bicycle onto said bicycle carrier; placing an existing bicycle crank portion into a saddle portion of the vertical plate; and, securing the existing bicycle to said bicycle carrier. 19. The method of claim 13, further comprising the steps of: detaching the wheel assembly from said rear platform; attaching a plurality of snow ski brackets to a plurality of suspension arms; attaching a plurality of ski straps to a plurality of ski hoops and said suspension arms respectively; and, attaching a drawbar assembly to an existing snow mobile.
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