CA2211588C - Specimen carrier elevator apparatus and transport system - Google Patents
Specimen carrier elevator apparatus and transport system Download PDFInfo
- Publication number
- CA2211588C CA2211588C CA 2211588 CA2211588A CA2211588C CA 2211588 C CA2211588 C CA 2211588C CA 2211588 CA2211588 CA 2211588 CA 2211588 A CA2211588 A CA 2211588A CA 2211588 C CA2211588 C CA 2211588C
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- carrier assembly
- unload
- load
- accordance
- transporting
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Abstract
Apparatus for transporting and transferring materials, such as laboratory specimens, between at least first and second vertically spaced levels includes a material carrier assembly with an endless belt which is moved to load and unload materials onto the assembly.
A motor drive is located at each loading and/or unloading level to operate the endless belt, thus removing the requirement for cables or other electrical connections to be provided to the carrier assembly. A material transport system includes at least two horizontal transport devices at different vertical levels interconnected by the apparatus for transporting and transferring materials between the two transport devices.
A motor drive is located at each loading and/or unloading level to operate the endless belt, thus removing the requirement for cables or other electrical connections to be provided to the carrier assembly. A material transport system includes at least two horizontal transport devices at different vertical levels interconnected by the apparatus for transporting and transferring materials between the two transport devices.
Description
CANADA
PATENT APPLICATION
SPECIIVVIEN CARRIER ELEVATOR APPARATUS AND
TRANSPORT SYSTEM
Inventors: Michel G. Quinlan Michael E. Loaring Assignee: Labotix Automation Inc.
IP Doc N: 64795-1 SPECIMEN CARRIER ELEVATOR APPARATUS A_ND TRAN PORT Y TEM
FIELD OF THE INVENTION
The present invention relates to apparatus for transporting materials between spaced vertical levels. More specifically, the present invention relates to an apparatus for biological specimens and the like which are being transported in specimen carriers, the apparatus transferring the carriers between spaced vertical levels.
BACKGROUND OF THE INVENTION
Transport systems for medical specimens and the like are known. For example, in medical diagnostic laboratories conveyor tracks can be employed to move medical specimens throughout the laboratory, from one processing station to the next.
In such cases, the specimens are generally transported in specimen carriers which are racks holding two or more specimens, the racks being designed for reliable transport by the conveyor tracks. more recently, transport systems have been designed with specimen carriers which transport single specimens.
Often, in such transport systems it is desired to transfer specimen carriers from one vertical level to another. In one use, such transfers move specimen carriers from one floor in a laboratory to another. In another use, at least a portion of the transport system conveyor track may be located above the floor of the laboratory to allow laboratory technicians and the like to walk under the conveyor track to access processing sites, etc.
In such cases, specimens are transferred to and from the elevated portion of the track as needed. While elevator systems to effect these transfers are known, these elevators have been complex and relatively expensive.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a novel apparatus for transporting and transferring materials between vertically spaced levels.
According to a first aspect of the present invention, there is provided an apparatus for transferring materials between vertically spaced levels comprising:
a materials carrier assembly including means to load and unload said materials;
elevating means to move said materials carrier assembly between at least a first and a second vertically spaced level;
a drive means at each of said first and second vertically spaced levels to operate said means to load and unload; and means to rotate said elevating means about a substantially vertical axis such that the orientation of said carrier and materials loaded thereon rotate therewith.
Preferably, said materials comprise medical specimen carriers and the like.
Also preferably, said means to load and unload comprises an endless belt. Also preferably, said elevating means comprises a screw drive. Also preferably, said means to rotate comprises a turntable to which said elevating means is mounted. Also preferably, said drive means comprises a reversible motor which engages said means to load and unload.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the present invention will now be described, by way of example only, with reference to the attached Figures, wherein:
Figure 1 shows a partially cut-away perspective view of a materials elevator in accordance with the present invention;
Figure 2 shows the materials elevator of Figure 1 loading a specimen carrier holding multiple specimens; and Figure 3 shows another embodiment of the materials elevator of Figure 1 wherein several specimen carriers, each of which holds a single specimen, are being loaded.
DETAILED DESCRIPTION OF THE INVENTION
An apparatus for transporting and transferring materials between vertically spaced levels in accordance with the present invention is indicated generally at 20 in Figure 1.
As illustrated, apparatus 20 forms part of a larger material transport system linking transport devices 100 which can be known material transport and conveyor systems.
PATENT APPLICATION
SPECIIVVIEN CARRIER ELEVATOR APPARATUS AND
TRANSPORT SYSTEM
Inventors: Michel G. Quinlan Michael E. Loaring Assignee: Labotix Automation Inc.
IP Doc N: 64795-1 SPECIMEN CARRIER ELEVATOR APPARATUS A_ND TRAN PORT Y TEM
FIELD OF THE INVENTION
The present invention relates to apparatus for transporting materials between spaced vertical levels. More specifically, the present invention relates to an apparatus for biological specimens and the like which are being transported in specimen carriers, the apparatus transferring the carriers between spaced vertical levels.
BACKGROUND OF THE INVENTION
Transport systems for medical specimens and the like are known. For example, in medical diagnostic laboratories conveyor tracks can be employed to move medical specimens throughout the laboratory, from one processing station to the next.
In such cases, the specimens are generally transported in specimen carriers which are racks holding two or more specimens, the racks being designed for reliable transport by the conveyor tracks. more recently, transport systems have been designed with specimen carriers which transport single specimens.
Often, in such transport systems it is desired to transfer specimen carriers from one vertical level to another. In one use, such transfers move specimen carriers from one floor in a laboratory to another. In another use, at least a portion of the transport system conveyor track may be located above the floor of the laboratory to allow laboratory technicians and the like to walk under the conveyor track to access processing sites, etc.
In such cases, specimens are transferred to and from the elevated portion of the track as needed. While elevator systems to effect these transfers are known, these elevators have been complex and relatively expensive.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a novel apparatus for transporting and transferring materials between vertically spaced levels.
According to a first aspect of the present invention, there is provided an apparatus for transferring materials between vertically spaced levels comprising:
a materials carrier assembly including means to load and unload said materials;
elevating means to move said materials carrier assembly between at least a first and a second vertically spaced level;
a drive means at each of said first and second vertically spaced levels to operate said means to load and unload; and means to rotate said elevating means about a substantially vertical axis such that the orientation of said carrier and materials loaded thereon rotate therewith.
Preferably, said materials comprise medical specimen carriers and the like.
Also preferably, said means to load and unload comprises an endless belt. Also preferably, said elevating means comprises a screw drive. Also preferably, said means to rotate comprises a turntable to which said elevating means is mounted. Also preferably, said drive means comprises a reversible motor which engages said means to load and unload.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the present invention will now be described, by way of example only, with reference to the attached Figures, wherein:
Figure 1 shows a partially cut-away perspective view of a materials elevator in accordance with the present invention;
Figure 2 shows the materials elevator of Figure 1 loading a specimen carrier holding multiple specimens; and Figure 3 shows another embodiment of the materials elevator of Figure 1 wherein several specimen carriers, each of which holds a single specimen, are being loaded.
DETAILED DESCRIPTION OF THE INVENTION
An apparatus for transporting and transferring materials between vertically spaced levels in accordance with the present invention is indicated generally at 20 in Figure 1.
As illustrated, apparatus 20 forms part of a larger material transport system linking transport devices 100 which can be known material transport and conveyor systems.
As shown in Figures 1 and 2, apparatus 20 includes a vertical frame 24 which extends between upper 28 and lower 32 vertically spaced end plates. A
motorized turntable 36 is rotatably mounted, via suitable bearings (not shown) to lower end plate 32.
A
corresponding, non-motorized, upper turntable (not shown) is rotatably mounted to upper end plate 28.
A guide column 40 extends vertically between turntable 36 and the upper turntable, as does a screw drive 42. Screw drive 42 includes a motor (not shown) which can reversibly rotate screw drive 42 with respect to turntable 36 and the upper turntable. A
materials carrier assembly 44 includes a car portion 48 which rides on guide column 40 and which includes a complementary set of threads which engage screw drive 42 such that rotation of screw drive 42 moves materials carrier assembly 44 along guide column 40.
The position of materials carrier assembly 44 with respect to screw drive 42 is determined by counting the revolutions of screw drive 42 from a known starting position. The counting of the revolutions of screw drive 42 can be accomplished in a variety of manners, including an optical sensor to count revolutions or, the motor rotating screw drive 42 can be a stepper motor and the steps can be counted in any suitable manner.
As shown in Figure 2, materials carrier assembly 44 further includes a conveyor 52 which includes an endless belt 56 and a pair of guide rails 60 which are arranged to engage a specimen carrier 64. In the embodiment shown in Figures 1 and 2, specimen carrier 64 is a rack-type carrier which holds ten specimens. As will be apparent to those of skill in the art, the present invention is not limited to rack-type carriers which carry ten specimens and, instead, may be employed with a variety of racks provided that guide rails 60 are selected to accommodate the rack and that conveyor 52 is long enough to receive the carrier rack.
As shown in Figure 2, a drive motor 68 is mounted to turntable 36 such that when materials carrier assembly 44 is vertically located in the position to load or unload a specimen carrier 64, a drive wheel 72 on motor 68 abuts endless belt 56 so that rotation of motor 68 results in rotation of endless belt 56. Drive motor 68 is reversible and thus endless belt 56 may be moved to load or unload materials carrier assembly 44 with a specimen carrier 64 as desired. As shown in Figure l, a similar drive motor 68 is mounted to the upper turntable of apparatus 20, to effect loading and unloading of materials carrier assembly 44 with a specimen carrier when assembly 44 is at the upper end of apparatus 20.
While not shown in the Figures, it is contemplated that apparatus 20 can provide loading and unloading of specimen carriers at vertical levels intermediate the upper and lower levels shown in the Figures. In such a case, a drive motor 68 will be provided at each intermediate level at which it is intended to load or unload specimen carriers. If loading and unloading at any intermediate level is to be performed on a single side of apparatus 20, the drive motor 68 at that intermediate level can be mounted to vertical frame 24.
Alternatively, if loading and unloading at an intermediate level can be performed on two or more sides of apparatus 20, drive motor 68 can be mounted appropriately to guide column 40, or multiple drive motors 68 can be employed at an intermediate level, each arranged to appropriately engage endless belt 56 when materials carrier assembly 44 is in a respective loading and unloading position. In either case, it is presently believed that one of the advantages of the present invention is the use of drive motors 68 which are not mounted to materials carrier assembly 44, thus removing the requirement for a "cat track" flexible cable track to be provided between materials carrier assembly 44 and a fixed point on apparatus 20.
As shown in the Figures, specimen carriers may be loaded and unloaded from transport devices 100 on various sides of apparatus 20. For example, in Figure 1 apparatus 20 may load and unload specimen carriers at the lower level from transport device 100a, via a separate turntable 104, on one side of apparatus 20 and apparatus 20 may load and unload specimen carriers at the upper level from transport devices 100b and 100c which are located on different sides of apparatus 20. Specifically, as materials carrier assembly 44 moves between two levels, motorized turntable 36 can rotate guide column 40 such that materials carrier assembly 44 will align with the desired transport device 100 at the intended loading or unloading level.
In the embodiment of Figure 2, a loading sensor 108 mounted to vertical frame 24 is employed to determine the loading status of specimen carrier 64 on materials carrier assembly 44. Specifically, when drive motor 68 is energized, sensor 108 is monitored to determine when specimen carrier 64 is either fully loaded, or fully unloaded, as appropriate, at which point drive motor 68 is de-energized. To avoid the need for wiring to be connected to materials carrier assembly 44, a similar sensor 108 is mounted to vertical frame 24 at each intended loading and unloading orientation at each level served by apparatus 20. The selection of sensor 108 is not particularly limited and in an embodiment of the invention sensor 108 comprises a photo emitter and photo detector pair.
Another embodiment of the present invention is illustrated in Figure 3. In this embodiment, which is intended to load and unload specimen carrier which carry single specimens, those component which are similar to components in the embodiment of Figures 1 and 2 are indicated with like reference numerals. In this embodiment, materials carrier assembly 200 is very similar to materials carrier assembly 44 of the previous embodiment, but guide rails 204 are designed to engage and support specimen carriers 208 which carry single specimens. Further guide rails 204 include an end stop 212 to prevent a specimen carrier 208 from being propelled off of the end of endless belt 56. Specifically, in this embodiment drive motor 68 is energized until sensor 108 indicates a sufficient load of specimen carriers 208 is present on materials carrier assembly 200. As specimen carriers 44 can arrive at random times, they are loaded onto endless belt 56 which conveys them toward end plate 212 and sensor 108 counts the number of specimen carriers which have been loaded onto materials carrier assembly 200. Motor 68 remains energized until a preselected number of specimen carriers 208 have been loaded or until a pre-set time period which commenced with the loading of a first specimen carrier 208, elapses.
Depending upon transport system 100 and other factors, the unloading of specimen carriers 208 can be accomplished either by energizing drive motor 68 until all of the specimen carriers 208 have been unloaded, or drive motor 68 may be energized intermittently to allow specimen carriers 208 to be unloaded singly until materials carrier assembly 200 is completely unloaded.
motorized turntable 36 is rotatably mounted, via suitable bearings (not shown) to lower end plate 32.
A
corresponding, non-motorized, upper turntable (not shown) is rotatably mounted to upper end plate 28.
A guide column 40 extends vertically between turntable 36 and the upper turntable, as does a screw drive 42. Screw drive 42 includes a motor (not shown) which can reversibly rotate screw drive 42 with respect to turntable 36 and the upper turntable. A
materials carrier assembly 44 includes a car portion 48 which rides on guide column 40 and which includes a complementary set of threads which engage screw drive 42 such that rotation of screw drive 42 moves materials carrier assembly 44 along guide column 40.
The position of materials carrier assembly 44 with respect to screw drive 42 is determined by counting the revolutions of screw drive 42 from a known starting position. The counting of the revolutions of screw drive 42 can be accomplished in a variety of manners, including an optical sensor to count revolutions or, the motor rotating screw drive 42 can be a stepper motor and the steps can be counted in any suitable manner.
As shown in Figure 2, materials carrier assembly 44 further includes a conveyor 52 which includes an endless belt 56 and a pair of guide rails 60 which are arranged to engage a specimen carrier 64. In the embodiment shown in Figures 1 and 2, specimen carrier 64 is a rack-type carrier which holds ten specimens. As will be apparent to those of skill in the art, the present invention is not limited to rack-type carriers which carry ten specimens and, instead, may be employed with a variety of racks provided that guide rails 60 are selected to accommodate the rack and that conveyor 52 is long enough to receive the carrier rack.
As shown in Figure 2, a drive motor 68 is mounted to turntable 36 such that when materials carrier assembly 44 is vertically located in the position to load or unload a specimen carrier 64, a drive wheel 72 on motor 68 abuts endless belt 56 so that rotation of motor 68 results in rotation of endless belt 56. Drive motor 68 is reversible and thus endless belt 56 may be moved to load or unload materials carrier assembly 44 with a specimen carrier 64 as desired. As shown in Figure l, a similar drive motor 68 is mounted to the upper turntable of apparatus 20, to effect loading and unloading of materials carrier assembly 44 with a specimen carrier when assembly 44 is at the upper end of apparatus 20.
While not shown in the Figures, it is contemplated that apparatus 20 can provide loading and unloading of specimen carriers at vertical levels intermediate the upper and lower levels shown in the Figures. In such a case, a drive motor 68 will be provided at each intermediate level at which it is intended to load or unload specimen carriers. If loading and unloading at any intermediate level is to be performed on a single side of apparatus 20, the drive motor 68 at that intermediate level can be mounted to vertical frame 24.
Alternatively, if loading and unloading at an intermediate level can be performed on two or more sides of apparatus 20, drive motor 68 can be mounted appropriately to guide column 40, or multiple drive motors 68 can be employed at an intermediate level, each arranged to appropriately engage endless belt 56 when materials carrier assembly 44 is in a respective loading and unloading position. In either case, it is presently believed that one of the advantages of the present invention is the use of drive motors 68 which are not mounted to materials carrier assembly 44, thus removing the requirement for a "cat track" flexible cable track to be provided between materials carrier assembly 44 and a fixed point on apparatus 20.
As shown in the Figures, specimen carriers may be loaded and unloaded from transport devices 100 on various sides of apparatus 20. For example, in Figure 1 apparatus 20 may load and unload specimen carriers at the lower level from transport device 100a, via a separate turntable 104, on one side of apparatus 20 and apparatus 20 may load and unload specimen carriers at the upper level from transport devices 100b and 100c which are located on different sides of apparatus 20. Specifically, as materials carrier assembly 44 moves between two levels, motorized turntable 36 can rotate guide column 40 such that materials carrier assembly 44 will align with the desired transport device 100 at the intended loading or unloading level.
In the embodiment of Figure 2, a loading sensor 108 mounted to vertical frame 24 is employed to determine the loading status of specimen carrier 64 on materials carrier assembly 44. Specifically, when drive motor 68 is energized, sensor 108 is monitored to determine when specimen carrier 64 is either fully loaded, or fully unloaded, as appropriate, at which point drive motor 68 is de-energized. To avoid the need for wiring to be connected to materials carrier assembly 44, a similar sensor 108 is mounted to vertical frame 24 at each intended loading and unloading orientation at each level served by apparatus 20. The selection of sensor 108 is not particularly limited and in an embodiment of the invention sensor 108 comprises a photo emitter and photo detector pair.
Another embodiment of the present invention is illustrated in Figure 3. In this embodiment, which is intended to load and unload specimen carrier which carry single specimens, those component which are similar to components in the embodiment of Figures 1 and 2 are indicated with like reference numerals. In this embodiment, materials carrier assembly 200 is very similar to materials carrier assembly 44 of the previous embodiment, but guide rails 204 are designed to engage and support specimen carriers 208 which carry single specimens. Further guide rails 204 include an end stop 212 to prevent a specimen carrier 208 from being propelled off of the end of endless belt 56. Specifically, in this embodiment drive motor 68 is energized until sensor 108 indicates a sufficient load of specimen carriers 208 is present on materials carrier assembly 200. As specimen carriers 44 can arrive at random times, they are loaded onto endless belt 56 which conveys them toward end plate 212 and sensor 108 counts the number of specimen carriers which have been loaded onto materials carrier assembly 200. Motor 68 remains energized until a preselected number of specimen carriers 208 have been loaded or until a pre-set time period which commenced with the loading of a first specimen carrier 208, elapses.
Depending upon transport system 100 and other factors, the unloading of specimen carriers 208 can be accomplished either by energizing drive motor 68 until all of the specimen carriers 208 have been unloaded, or drive motor 68 may be energized intermittently to allow specimen carriers 208 to be unloaded singly until materials carrier assembly 200 is completely unloaded.
The above-described embodiments of the invention are intended to be examples of the present invention and alterations and modifications may be effected thereto, by those of skill in the art, without departing from the scope of the invention.
Claims (12)
1. An apparatus for transporting and transferring material between at least first and second vertically spaced levels comprising:
a material carrier assembly including means to load and unload said material;
elevating means to move said material carrier assembly between said at least first and second vertically spaced levels; and a drive means at each of said at least first and second vertically spaced levels to operate said means to load and unload.
a material carrier assembly including means to load and unload said material;
elevating means to move said material carrier assembly between said at least first and second vertically spaced levels; and a drive means at each of said at least first and second vertically spaced levels to operate said means to load and unload.
2. An apparatus in accordance with claim 1 including means to rotate said elevating means about a substantially vertical axis such that the orientation of said carrier, and material loaded thereon, rotate therewith.
3. An apparatus in accordance with claim 1 wherein said means to load and unload said material comprises a conveyor means mounted on said material carrier assembly.
4. An apparatus in accordance with claim 1 wherein said elevating means comprises a screw drive rotatably mounted between said at least first and second vertically spaced levels.
5. An apparatus in accordance with claim 1 including position sensor means for detecting a vertical position of said material carrier assembly.
6. An apparatus in accordance with claim 1 including loading sensor means for detecting material being loaded and unloaded by said means to load and unload.
7. A material transport system comprising:
a first transport device, said first transport device for transporting material to a first transfer point at a first vertical level;
a second transport device, said second transport device for receiving said material at a second transfer point at a second vertical level; and transporting and transferring means for transporting said material between said first and said second transfer points, and for transferring said material from said first transfer point to said second transfer point, wherein said transporting and transferring means comprises:
a material carrier assembly including means to load and unload said material;
elevating means to move said material carrier assembly between said at least first and second vertically spaced levels; and a drive means at each of said first and second transfer points to operate said means to load and unload.
a first transport device, said first transport device for transporting material to a first transfer point at a first vertical level;
a second transport device, said second transport device for receiving said material at a second transfer point at a second vertical level; and transporting and transferring means for transporting said material between said first and said second transfer points, and for transferring said material from said first transfer point to said second transfer point, wherein said transporting and transferring means comprises:
a material carrier assembly including means to load and unload said material;
elevating means to move said material carrier assembly between said at least first and second vertically spaced levels; and a drive means at each of said first and second transfer points to operate said means to load and unload.
8. A system in accordance with claim 7 including means to rotate said elevating means about a substantially vertical axis such that the orientation of said carrier, and material loaded thereon, rotate therewith.
9. A system in accordance with claim 7 wherein said means to load and unload said material comprises a conveyor means mounted on said material carrier assembly.
10. A system in accordance with claim 7 wherein said elevating means comprises a screw drive rotatably mounted between said at least first and second vertically spaced levels.
11. An system in accordance with claim 7 including position sensor means for detecting a vertical position of said material carrier assembly.
12. An system in accordance with claim 7 including loading sensor means for detecting material being loaded and unloaded by said means to load and unload.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2254296P | 1996-07-26 | 1996-07-26 | |
| US60/022,542 | 1996-07-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2211588A1 CA2211588A1 (en) | 1998-01-26 |
| CA2211588C true CA2211588C (en) | 2006-09-19 |
Family
ID=21810128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2211588 Expired - Fee Related CA2211588C (en) | 1996-07-26 | 1997-07-25 | Specimen carrier elevator apparatus and transport system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2211588C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2100830A1 (en) * | 2008-03-11 | 2009-09-16 | Hitachi High-Technologies Corporation | Specimen transport system |
-
1997
- 1997-07-25 CA CA 2211588 patent/CA2211588C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2100830A1 (en) * | 2008-03-11 | 2009-09-16 | Hitachi High-Technologies Corporation | Specimen transport system |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2211588A1 (en) | 1998-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |