IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0243686
(2002-09-16)
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발명자
/ 주소 |
- Perelli, Thomas
- Demko, Craig J.
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출원인 / 주소 |
- Rubbermaid Commercial Products LLC
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
4 인용 특허 :
29 |
초록
▼
A dolly for transporting multiple containers. The dolly is provided with a plurality of casters which allow it to spin on its footprint. Supports, each of which can carry a container, are hinged together allowing the dolly to flex when encountering alterations in flooring level. Also provided are la
A dolly for transporting multiple containers. The dolly is provided with a plurality of casters which allow it to spin on its footprint. Supports, each of which can carry a container, are hinged together allowing the dolly to flex when encountering alterations in flooring level. Also provided are large side wheels which reduce the force necessary to push the dolly over a bump or onto a floor which is at a higher elevation. When one support is not carrying a container, the support can be rotated with the hinge to a point at which it is approximately perpendicular to the adjacent support and thereby approximately vertical to the floor. Rotating one support to an approximately vertical position shortens the dolly footprint and aids in storage. Moreover, a support which is rotated to an approximately vertical position can be temporarily maintained in that position by a lock.
대표청구항
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1. A locking mechanism for use on a dolly which carries multiple containers, said locking mechanism comprising: a first hinge portion having a plurality of first fingers, each having at least one top beam and at least one bottom beam defining a plurality of first spaces, and a plurality of first s
1. A locking mechanism for use on a dolly which carries multiple containers, said locking mechanism comprising: a first hinge portion having a plurality of first fingers, each having at least one top beam and at least one bottom beam defining a plurality of first spaces, and a plurality of first support portions; a second hinge portion having a plurality of second fingers, each having at least one top beam and at least one bottom beam defining a plurality of second spaces, and a plurality of second support portions; a block attached to one of said first support portions; and a bar journalled through the first fingers and through the second fingers thereby joining the first hinge portion and the second hinge portion, wherein at least one of the first fingers is fixedly engaged with at least one of the second support portions when the block is positioned in one of said second spaces. 2. The locking mechanism according to claim 1, wherein the first support portion to which the block is attached is at an end of the first hinge portion.3. A locking mechanism for use on a dolly which carries multiple containers, said locking mechanism comprising: a first hinge portion having a plurality of first fingers, each having at least one top beam and at least one bottom beam defining a plurality of first spaces, and a plurality of first support portions; a second hinge portion having a plurality of second fingers, each having at least one top beam and at least one bottom beam defining a plurality of second spaces, and a plurality of second support portions; a block attached to one of said first support portions; and a bar journalled through the first fingers and through the second fingers thereby joining the first hinge portion and the second hinge portion, wherein at least one of the first fingers is fixedly engaged with at least one of the second support portions when the block is positioned in one of said second spaces, wherein the first support portion to which the block is attached is at an end of the first hinge portion, and wherein when the first hinge portion is rotated with respect to the second hinge portion, the block becomes frictionally engaged with one of said second fingers. 4. A locking mechanism for connecting two supports of a dolly, said locking mechanism comprising: a first hinge portion having a plurality of first fingers and a plurality of first support portions, wherein at least one of said first support portions includes a space-entering block extending from the first support portion; a second hinge portion having a plurality of second fingers, at least one of which defines a space; and a bar extending through the first fingers and the second fingers, thereby joining the first hinge portion and the second hinge portion, wherein, when said first hinge portion is rotated with respect to said second hinge portion, said space-entering block enters said space thereby releasably fixing the orientation of said first hinge portion with respect to said second hinge portion. 5. The locking mechanism according to claim 4, wherein the first support portion including the space-entering block extending therefrom is at a first end of the first hinge portion.6. The locking mechanism according to claim 4, wherein said first hinge portion comprises an additional space-entering block which is adapted to fit within a second space defined by one of the second fingers of the second hinge portion when said first hinge portion is rotated with respect to said second hinge portion.7. The locking mechanism according to claim 4, wherein the second hinge portion has a plurality of second support portions, wherein at least one of said second support portions includes a space-entering block extending therefrom, and wherein at least one of the first plurality of fingers defines a space, wherein, when said second hinge portion is rotated with respect to said first hinge portion, said space-entering block extending fr om said one of said second support portions enters said space defined by said one of the plurality of first fingers, thereby releasably fixing the orientation of said second hinge portion with respect to said first hinge portion. 8. The locking mechanism according to claim 7, wherein the second hinge portion has the same configuration as the first hinge portion.9. A locking mechanism for connecting two supports of a dolly, said locking mechanism comprising: a first hinge portion having a plurality of first fingers and a plurality of first support portions, wherein at least one of said first support portions includes a space-entering block extending from the first support portion; a second hinge portion having a plurality of second fingers, at least one of which defines a space; and a bar extending through the first fingers and the second fingers, thereby joining the first hinge portion and the second hinge portion, wherein, when said first hinge portion is rotated with respect to said second hinge portion, said space-entering block enters said space thereby releasably fixing the orientation of said first hinge portion with respect to said second hinge portion, wherein the first support portion including the space-entering block extending therefrom is at a first end of the first hinge portion, and wherein a tilting block, extending from a first support portion located at a second end of the first hinge portion, causes the first hinge portion to be tilted with respect to the second hinge portion when the first hinge portion is rotated with respect to the second hinge portion.
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