Collapsible handcart capable of extending the area of carrier by operating handle
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B62B-001/00
B62B-007/02
B62D-021/14
B62D-033/08
B60P-001/04
출원번호
US-0320437
(2002-12-17)
§371/§102 date
20020716
(20020716)
발명자
/ 주소
Tsai, James
대리인 / 주소
Bacon &
인용정보
피인용 횟수 :
13인용 특허 :
13
초록▼
A collapsible handcart comprises a handle bar, a support carrier having a main carrier and two movable carriers, two sets of linkages and a trigger. The handle bar has an end thereof pivoted on the main carrier to be turned between an extended position, at which the handle bar is turned away from th
A collapsible handcart comprises a handle bar, a support carrier having a main carrier and two movable carriers, two sets of linkages and a trigger. The handle bar has an end thereof pivoted on the main carrier to be turned between an extended position, at which the handle bar is turned away from the main carrier, and a collapsed position, at which the handle bar is turned towards the main support carrier. The linkages are connected movable carriers with the main carrier such that the movable carriers can be driven to move between an extended position, at which the movable carriers are away from the main carrier, and a collapsed position, at which the movable carrier close to the main carrier. The trigger has an end thereof pivoted on the handle bar whereby turn the handle bar will drive the trigger to move. The trigger can drive the movable carriers to move such that the movable carriers will be driven to the extended position when turns the handle bar to the extended position and will be driven to the collapsed position when turns the handle bar to the collapsed position.
대표청구항▼
1. A collapsible handcart, comprising:a support carrier having a main carrier and two movable carriers, wherein said movable carriers are movably coupled on lateral sides of said main carrier respectively to be driven for movement between a collapsed position, at which said movable carriers are clos
1. A collapsible handcart, comprising:a support carrier having a main carrier and two movable carriers, wherein said movable carriers are movably coupled on lateral sides of said main carrier respectively to be driven for movement between a collapsed position, at which said movable carriers are close to said main carrier, and an extended position, at which said movable carriers are away from said main carrier by a predetermined distance so as to extend a support area of the support carrier for supporting goods with a larger size than can be supported by the main carrier; a handle bar having a grip at an end thereof and pivoting the other end thereof on said main carrier of said support carrier to be turned between a collapsed position, at which said handle bar is turned inwardly to said main carrier, and an extended position, at which said handle bar is turned outwardly from said main carrier by a predetermined angle; two wheels pivoted on said support carrier; a movable trigger provided at said main carrier of said support carrier and having an end thereof pivoted on said handle bar such that turning said handle bar will drive said trigger to move and said trigger can activate said movable carriers to move; whereby said movable carriers will be driven to move to the collapsed position via said trigger when said handle bar is turned to the collapsed position and said movable carriers will be driven to move to the extended position via said trigger when said handle bar is turned to the extended position; and two sets of linkages that are used to connect said movable carriers to said main carrier, and each set of said linkages has a first linkage and a second linkage with their ends pivoted on said main carrier and said movable carriers respectively. 2. The collapsible handcart as defined in claim 1, wherein said main carrier of said support carrier has two chambers at the lateral sides thereof for respectively receiving said movable carriers therein when they are at the collapsed position.3. The collapsible handcart as defined in claim 1, wherein said main carrier of said support carrier has a slot at a topside thereof for receiving said handle bar therein when it is at collapsed position.4. The collapsible handcart as defined in claim 1, wherein said support carrier is provided with at least a frictional piece thereon.5. The collapsible handcart as defined in claim 1, wherein wheels are pivoted on said movable carriers of said support carrier.6. The collapsible handcart as defined in claim 1, wherein said first and said second linkages are H-shaped bar elements.7. The collapsible handcart as defined in claim 1, further comprising a third linkage pivoting its opposite ends on said first and said second linkages respectively.8. The collapsible handcart as defined in claim 1, further comprising a spring exerted on one of said linkages for forcing said linkages to drive said movable carriers to the extended position.9. The collapsible handcart as defined in claim 1, wherein said trigger has a driving head and a linkage, wherein said driving head is slidably installed on said main carrier of said support carrier and said linkage has an end thereof pivoted on said driving head and the other end thereof pivoted on said handle bar.10. The collapsible handcart as defined in claim 1, wherein said handle bar further comprises a jointer at the end opposite from said grip to be pivoted on said main carrier.11. The collapsible handcart as defined in claim 1, wherein said handle bar is provided with a holder device, which has a seat secured to said handle bar and two extendable arms pivoted on said seat for turning outwardly and inwardly.12. The collapsible handcart as defined in claim 1, wherein said grip is pivoted on said handle bar such that when said handle bar is turned to the collapsed position, said handle bar rests on a side of said main carrier and said grip rests on the opposite side of said main carrier.13. The collapsible handcart as defined in claim 1, wherein said trigger is situated in said main carrier.14. The collapsible handcart as defined in claim 1, wherein said main carrier of said support carrier has two side members and a board fastening its opposite sides to said side members respectively.15. The collapsible handcart as defined in claim 14, further comprising a box disposed between said side members and under said board with hookers on said box locking with openings on said side members.16. The collapsible handcart as defined in claim 1, wherein said main carrier of said support carrier is fastened with a box for receiving the trigger therein.17. The collapsible handcart as defined in claim 16, wherein said box is provided with at least a rail to be engaged with said trigger such that said trigger can move along said rail.18. The collapsible handcart as defined in claim 1, wherein said first linkage is provided with a first driven portion and a second driven portion to be activated by said trigger for driving said first linkage, said second linkage and said movable carrier to move.19. The collapsible handcart as defined in claim 18, wherein said trigger has a driving head and said driving head has a driving portion, wherein said driving portion is located between said first and said second driven portions of said first linkage such that the movement of said driving head can drive said first linkage to turn.
Chandick Michael D. (Orland Park IL) Chandick Robert M. (Orland Park IL) Ricchio Pasquale (Blue Island IL), Portable luggage carrier and method of collapsing same.
Kazmark Eugene A. (5 Remin La. Joliet IL 60433) Kazmark ; Jr. Eugene A. (506 Manhattan Rd. Joliet IL 60433), Portable luggage carrier with pivotable wheels.
Buttazzoni, Luca; Bernal, Andres, Castor supported dolly assembly capable of being made from lightweight materials and of being used as a pallet assembly.
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