IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0727350
(2010-03-19)
|
등록번호 |
US-8322746
(2012-12-04)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Gardner, Linn, Burkhart & Flory, LLP
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
4 |
초록
▼
A cart includes a first structural member and a second structural member. The first structural member has a first portion, a second portion, and a third portion. The second structural member has a first portion, a second portion, and a third portion. A pivot pivotally connects the first portions of
A cart includes a first structural member and a second structural member. The first structural member has a first portion, a second portion, and a third portion. The second structural member has a first portion, a second portion, and a third portion. A pivot pivotally connects the first portions of the first and second structural members. A force generator applies a force between the third portions of the first and second structural members. The force generator causes the first and second members to pivot toward each other. A first connector connects the first structural member to a load and a second connector connects the second structural member to the load. In this manner, the pivoting of the first and second structural members toward each other applies a lifting motion at the first and second structural members that is transferred by the first and second connectors to the load. One or more wheels may be provided to support the first and second structural members.
대표청구항
▼
1. A cart, comprising: a first structural member having a first portion, a second portion and a third portion;a second structural member having a first portion, a second portion, and a third portion;a pivot that pivotally connects said first portions of said first and second structural members;a for
1. A cart, comprising: a first structural member having a first portion, a second portion and a third portion;a second structural member having a first portion, a second portion, and a third portion;a pivot that pivotally connects said first portions of said first and second structural members;a force generator that applies a force between said third portions of said first and second structural members, wherein said force generator causes said first and second members to pivot with respect to each other, wherein said force generator comprises a tensioner, wherein said tensioner pulls said third portions of said first and said second structural members toward each other, wherein said tensioner comprises a jackscrew, wherein said jackscrew is rotated by at least one chosen from a crank and a motor, wherein said tensioner is detachably mounted to at least one chosen from said first structural member and said second structural member to allow said first and second structural members to move to a non-use configuration;a first connector connecting said first structural member to a load and a second connector connecting said second structural member to the load wherein the force member causing the pivoting of said first and second structural members toward each other applies a lifting motion at said first and second structural members that is transferred by said first and second connectors to the load; andat least two wheels supporting said first and second structural members said wheels being rotatable about a common axis. 2. The cart as claimed in claim 1 wherein said first and second structural members are separable at said pivot in said non-use configuration. 3. The cart as claimed in claim 1 wherein said first and second connectors comprise straps. 4. The cart as claimed in claim 1 wherein each of said first and second structural members has a first lateral side and a second lateral side, wherein a load is supported between said first and second lateral sides of said first and second structural members. 5. A cart, comprising: a first structural member having a first portion, a second portion and a third portion;a second structural member having a first portion, a second portion, and a third portion;a pivot that pivotally connects said first portions of said first and second structural members;a force generator that applies a force between said third portions of said first and second structural members, wherein said force generator causes said first and second members to pivot with respect to each other;a first connector connecting said first structural member to a load and a second connector connecting said second structural member to the load, wherein the force member causing the pivoting of said first and second structural members toward each other applies a lifting motion at said first and second structural members that is transferred by said first and second connectors to the load;at least two wheels supporting said first and second structural members, said wheels being rotatable about a common axis, wherein each of said first and second structural members has a first lateral side and a second lateral side, wherein a load is supported between said first and second lateral sides of said first and second structural members; anda first cross member connecting said first and second lateral sides of said third portion of said first structural member and a second cross member connecting said first and second lateral sides of said third portion of said second structural member, wherein said force generator is connected with said first and second cross members. 6. The cart as claimed in claim 5 wherein said common axis coincides with said pivot. 7. The cart as claimed in claim 5 wherein said force generator comprises a tensioner, wherein said tensioner pulls said third portions of said first and said second structural members toward each other. 8. The cart as claimed in claim 7 wherein said tensioner comprises a jackscrew. 9. The cart as claimed in claim 8 wherein said jackscrew is rotated by at least one chosen from a crank and a motor. 10. A cart comprising: a generally U-shaped first bar comprising a first lateral side portion, a second lateral side portion, and a transverse portion between said first and second lateral side portions of said first bar;a generally U-shaped second bar comprising a first lateral side portion, a second lateral side portion, and a transverse portion between said first and second lateral side portions of said second bar;said first lateral side portions of said first and second bars pivotally connected opposite said transverse portions to pivot about an axis and including a first wheel rotatable about said axis;said second lateral side portions of said first and second bars pivotally connected opposite said transverse portions to pivot about said axis and including a second wheel rotatable about said axis;at least two first connectors, each mounted at one end respectively to said first and second lateral side portions of said first bar between said transverse portion of said first bar and said axis;at least two second connectors, each mounted at one end respectively to said first and second lateral side portions of said second bar between said transverse portion of said second bar and said axis; anda tensioner extending between said first and second bars to selectively pull said first and second bars toward each other to elevate a load suspended by another end of said first and second connectors. 11. The cart as claimed in claim 10 wherein said tensioner comprises a jackscrew. 12. The cart as claimed in claim 11 wherein said jackscrew is rotated by at least one chosen from a crank and a motor. 13. The cart as claimed in claim 10 wherein said tensioner is detachably mounted to said transverse portions of said first and second bars to allow said first and second bars to move to a non-use position. 14. The cart as claimed in claim 13 wherein said first and second bars are separable at said first and second axis. 15. The cart as claimed in claim 10 wherein said first and second connectors comprise straps. 16. The cart as claimed in claim 10 including a first rod spanning said at least two first connectors to support one end of the load and a second rod spanning said at least two second connectors to support an opposite end of the load. 17. The cart as claimed in claim 10 wherein said tensioner extends between said transverse portions of said first and second bars.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.