초록 ▼

An assembly suitable for use in a laboratory instrument is set forth. The assembly comprises a plurality of guide rods that are disposed generally parallel with one another and a plurality of carriage assemblies connected for movement along the plurality of guide rods. A sub-carriage assembly is dis

An assembly suitable for use in a laboratory instrument is set forth. The assembly comprises a plurality of guide rods that are disposed generally parallel with one another and a plurality of carriage assemblies connected for movement along the plurality of guide rods. A sub-carriage assembly is disposed on at least one of the carriage assemblies and is connected to the carriage assembly for movement in a direction transverse to the plurality of guide rods. A plurality of carriage drive mechanisms are employed to move the plurality of carriage assemblies independently along said plurality of guide rods and a sub-carriage drive mechanism is provided to move the sub-carriage assembly in a direction transverse to said plurality of guide rods.

대표청구항 ▼

What is claimed is: 1. A laboratory instrument adapted to extract an amount of material from a container for testing thereof, said laboratory instrument comprising: a rack adapted to support a container; a first carriage assembly having a piercing tool adapted to pierce a sealed cap of a container

What is claimed is: 1. A laboratory instrument adapted to extract an amount of material from a container for testing thereof, said laboratory instrument comprising: a rack adapted to support a container; a first carriage assembly having a piercing tool adapted to pierce a sealed cap of a container supported by said rack; a second carriage assembly having a sampling tool adapted to enter said container supported by said rack through an opening formed by said piercing tool, said sampling tool further being adapted to extract said amount of said material from said container, said first and second carriage assemblies being mounted on a common gantry; a plurality of drive mechanisms adapted to independently move said first and second carriage assemblies into various operable positions with respect to said container; and a control system adapted to direct said plurality of drive mechanisms to move said first and second carriage assemblies to said operable positions in accordance with a predetermined operational sequence, wherein said predetermined operational sequence comprises: moving said first carriage assembly along a first motion path so that said piercing tool is juxtaposed a sealed cap of a container supported by said rack; moving said first carriage assembly along a second motion path so that said piercing tool engages said sealed cap to form an opening therein; moving said first carriage assembly along said second motion path so that said piercing tool disengages from said sealed cap; and moving said first carriage assembly along said first motion path to remove said piercing tool from alignment with said container. 2. A laboratory instrument as claimed in claim 1 wherein said predetermined operational sequence further comprises: moving said second carriage assembly along a third motion path so that said sampling tool is juxtaposed said opening in said sealed cap of said container; moving said second carriage assembly along a fourth motion path so that said sampling tool proceeds through said opening in said sealed cap and into contact with a sample material held in said container; activating said sampling tool to extract an amount of said sample material from said container; and moving said second carriage assembly along said fourth motion path so that said sampling tool disengages said opening in said sealed cap. 3. A laboratory instrument as claimed in claim 2 wherein said first and third motion paths lie generally along the same motion axis. 4. A laboratory instrument as claimed in claim 3 wherein said second and fourth motion paths lie generally along the same motion axis. 5. A laboratory instrument as claimed in claim 2 wherein said second and fourth motion paths lie generally along the same motion axis. 6. A laboratory instrument as claimed in claim 5 wherein said first and third motion paths are generally transverse to said second and fourth motion paths. 7. A laboratory instrument as claimed in claim 2 wherein said predetermined operational sequence further comprises: moving said second carriage assembly along a fifth motion path so that said sampling tool is placed in a position juxtaposed a test container; moving said second carriage assembly along a sixth motion path so that said sampling tool is disposed in said test container; activating said sampling tool to dispense the material extracted from said container into said test container; and moving said second carriage assembly along said sixth motion path so that said sampling tool is removed from engagement with said test container. 8. A laboratory instrument as claimed in claim 7 wherein said predetermined operational sequence further comprises: moving said second carriage assembly along a seventh motion path so that said sampling tool is juxtaposed a cleaning apparatus; and moving said second carriage assembly along an eighth motion path so that said sampling tool is placed into engagement with said cleaning apparatus. 9. A laboratory instrument as claimed in claim 1 wherein the common gantry includes a first guide rod and a second guide rod disposed generally parallel with one another; and wherein the first and second carriage assemblies are connected for movement along the first and second guide rods and wherein the first carriage assembly includes a first keyed connection engaged to the first guide rod and a first non-keyed bushing engaged to the second guide rod and wherein the second carriage assembly includes a second keyed connection engaged to the second guide rod and a second non-keyed bushing engaged to the first guide rod. 10. A laboratory instrument as claimed in claim 9 wherein the piercing tool moves in response to rotation of the first guide rod, and the sampling tool moves in response to rotation of the second guide rod. 11. A laboratory instrument as claimed in claim 1 wherein the plurality of drive mechanisms adapted to independently move said first and second carriage assemblies into various operable positions includes a first motor having a rotating shaft; a first drive wheel connected for rotation by the rotating shaft of the first motor; a first idler wheel; and a first elastic drive belt connected for rotation about and extending between the first drive wheel and the first idler wheel, the first carriage being connected for co-movement with the first elastic drive belt. 12. A laboratory instrument as claimed in claim 11 wherein the plurality of drive mechanisms adapted to independently move said first and second carriage assemblies into various operable positions further includes a second motor having a rotating shaft; a second drive wheel connected for rotation by the rotating shaft of the second motor; a second idler wheel; and a second elastic drive belt connected for rotation about and extending between the second drive wheel and the second idler wheel, the second carriage being connected for co-movement with the second elastic drive belt. 13. In a laboratory instrument having a rack adapted to support a container, a first carriage assembly having a piercing tool adapted to pierce a sealed cap of a container supported by said rack and a second carriage assembly having a sampling tool adapted to enter said container supported by said rack through an opening formed by said piercing tool and wherein said first and second carriage assemblies are mounted on a common gantry, a method for extracting an amount of material from said container comprising: moving said first carriage assembly along a first motion axis so that said piercing tool is juxtaposed a sealed cap of a container supported by said rack; moving said first carriage assembly along a second motion axis so that said piercing tool engages said sealed cap to form an opening therein; moving said first carriage assembly along said second motion axis so that said piercing tool disengages from said sealed cap; moving said first carriage assembly along said first motion axis to remove said piercing tool from alignment with said container; moving said second carriage assembly along said first motion axis so that said sampling tool is juxtaposed said opening in said sealed cap of said container; moving said second carriage assembly along said second motion axis so that said sampling tool proceeds through said opening in said sealed cap and into contact with a sample material held in said container; activating said sampling tool to extract an amount of said sample material from said container; and moving said second carriage assembly along said second motion axis so that said sampling tool disengages said opening in said sealed cap. 14. The method as claimed in claim 13 and further comprising: moving said second carriage assembly along said first motion axis so that said sampling tool is placed in a position juxtaposed a test container; moving said second carriage assembly along said second motion axis that said sampling tool is disposed in said test container; activating said sampling tool to dispense the material extracted from said container into said test container; moving said second carriage assembly along said second motion axis so that said sampling tool is removed from engagement with said test container. 15. A method as claimed in claim 14 and further comprising: moving said second carriage assembly along said first motion axis so that said sampling tool is juxtaposed a cleaning apparatus; and moving said second carriage assembly along said second motion axis so that said sampling tool is placed into engagement with said cleaning apparatus. 16. The method as claimed in claim 13 wherein the first motion axis includes a first guide rod and a second guide rod and wherein the step of moving the first carriage assembly along the second motion axis includes rotating the first guide rod. 17. The method as claimed in claim 16 wherein the step of moving the second carriage assembly along the second motion axis includes rotating the second guide rod. 18. The method as claimed in claim 16 wherein the first carriage assembly includes a first keyed connection engaged to the first guide rod and a first non-keyed bushing engaged to the second guide rod. 19. The method as claimed in claim 16 wherein the second carriage assembly includes a second keyed connection engaged to the second guide rod and a second non-keyed bushing engaged to the first guide rod.