IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0790560
(2001-02-23)
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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 :
8 인용 특허 :
29 |
초록
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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 dolly for transporting multiple containers comprising: at least two supports each having a top surface and an underside; at least one wheel mounted to each of said at least two supports and extending below the underside of each of said at least two supports; at least two support mechani
1. A dolly for transporting multiple containers comprising: at least two supports each having a top surface and an underside; at least one wheel mounted to each of said at least two supports and extending below the underside of each of said at least two supports; at least two support mechanisms for supporting containers positioned on the top surfaces of said at least two supports; and a hinge attaching a first of said at least two supports to a second of said at least two supports such that at least one of the first and second supports can pivot upwards from a position in which the first and second supports are substantially coplanar, wherein said hinge defines a pivot line, wherein at least one wheel is mounted along the pivot line, and wherein said wheels mounted to each of the at least two supports and extending below the underside of each of said at least two supports are casters, and wherein an axis of rotation of said at least one wheel mounted along the pivot line of the hinge is fixed with respect to the supports. 2. The dolly according to claim 1, wherein the dolly can rotate 360° within a circle the diameter of which is the distance between an end of the first of said at least two supports and an end of the second of said at least two supports.3. The dolly according to claim 1, further comprising: a locking mechanism, that allows the first support to be maintained at an angle with respect to the second support. 4. The dolly according to claim 1, wherein a first of said at least two support mechanisms includes a first cylindrical boss which extends perpendicularly upward from the top surface of the first of said at least two supports, wherein first screw threads extend outwardly from said first cylindrical boss, wherein a second of said at least two support mechanisms includes a second cylindrical boss which extends perpendicularly upward from the top surface of the second of said at least two supports, and wherein second screw threads extend outwardly from said second cylindrical boss.5. The dolly according to claim 1, further comprising: a step point, wherein a user can place a foot on the step point to hold the dolly in a first fixed position when affixing a first of said at least two containers to the dolly, and wherein the user can place the foot on the step point to hold the dolly in a second fixed position when removing the first of said at least two containers from the dolly. 6. A dolly for transporting multiple containers comprising: at least two supports each having a top surface configured to receive a container and an underside, a first and a second of the supports being connected so as to be pivotable relative to one another about a pivot axis; and a plurality of wheels, a first of the plurality of wheels having a first radius and being connected to the first support, a second of the plurality of wheels having a second radius and being mounted approximately coaxially with the pivot axis, wherein the second radius is larger than the first radius, and a third of the plurality of wheels being connected to the second support, wherein the first and second supports are configured such that the first, second, and third wheels will simultaneously contact a substantially flat horizontal surface. 7. The dolly according to claim 6, wherein the first and the second supports are connected by a hinge which defines the pivot axis.8. The dolly according to claim 7, wherein the second support bends toward the first support by means of being hingedly connected to the first support.9. The dolly according to claim 8, further comprising: a locking mechanism, that allows the first support to be maintained at an angle with respect to the second support. 10. The dolly according to claim 6, wherein the plurality of wheels includes casters, and the second wheel has an axis of rotation that is fixed with respect to the first and second supports.11. The dolly according to claim 10, wherein the dolly can r otate 360° within a circle the diameter of which is the distance between an end of the first support and an end of the second support.12. The dolly according to claim 6, further comprising: at least two support mechanisms for supporting at least two containers to the top surfaces of the at least two supports. 13. The dolly according to claim 12, wherein a first of said at least two support mechanisms includes a first cylindrical boss which extends perpendicularly upward from the top surface of the first of the at least two supports, wherein first screw threads extend outwardly from said first cylindrical boss, wherein a second of said at least two support mechanisms includes a second cylindrical boss which extends perpendicularly upward from the top surface of the second of the at least two support, and wherein second screw threads extend outwardly from said second cylindrical boss.14. The dolly according to claim 6, further comprising: a step point, wherein a user can place a foot on the step point to hold the dolly in a first fixed position when affixing one of the containers to the dolly, and wherein the user can place the foot on the step point to hold the dolly in a second fixed position when removing one of the containers from the dolly. 15. The dolly according to claim 6, wherein the third wheel has a radius smaller than the second radius.
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