PIPETTOR STROKE CONTROL MECHANISM
A pipette assembly for drawing and discharging liquid having a stroke control mechanism that produces a shorter stroke during liquid intake than on liquid discharge to assure complete fluid discharge, the control mechanism including an indexing sleeve carried by a main piston in the pipette, with th...
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| creator | WALKER C,US |
| description | A pipette assembly for drawing and discharging liquid having a stroke control mechanism that produces a shorter stroke during liquid intake than on liquid discharge to assure complete fluid discharge, the control mechanism including an indexing sleeve carried by a main piston in the pipette, with the sleeve having opposed, axially disposed sets of flexible fingers in annular array that engage cams to positively rotate the indexing member in one direction in step-by-step fashion, bringing high and low stops on the indexing member selectively into engagement with abutments within the pipette. |
| format | Patent |
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main piston in the pipette, with the sleeve having opposed, axially disposed sets of flexible fingers in annular array that engage cams to positively rotate the indexing member in one direction in step-by-step fashion, bringing high and low stops on the indexing member selectively into engagement with abutments within the pipette.</description><language>eng</language><subject>CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE ; CHEMISTRY ; COFFEE MILLS ; COMPOUNDS THEREOF ; DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY ; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR ; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY ; DIAGNOSIS ; DOMESTIC ARTICLES OR APPLIANCES ; FURNITURE ; HOUSEHOLD OR TABLE EQUIPMENT ; HUMAN NECESSITIES ; HYGIENE ; IDENTIFICATION ; INORGANIC CHEMISTRY ; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES ; MEASURING ; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL ; MEDICAL OR VETERINARY SCIENCE ; METALLURGY ; METERING BY VOLUME ; NON-METALLIC ELEMENTS ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; PHYSICS ; SPICE MILLS ; SUCTION CLEANERS IN GENERAL ; SURGERY ; TESTING ; 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liquid intake than on liquid discharge to assure complete fluid discharge, the control mechanism including an indexing sleeve carried by a main piston in the pipette, with the sleeve having opposed, axially disposed sets of flexible fingers in annular array that engage cams to positively rotate the indexing member in one direction in step-by-step fashion, bringing high and low stops on the indexing member selectively into engagement with abutments within the pipette.</description><subject>CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE</subject><subject>CHEMISTRY</subject><subject>COFFEE MILLS</subject><subject>COMPOUNDS THEREOF</subject><subject>DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY</subject><subject>DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR</subject><subject>DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY</subject><subject>DIAGNOSIS</subject><subject>DOMESTIC ARTICLES OR APPLIANCES</subject><subject>FURNITURE</subject><subject>HOUSEHOLD OR TABLE EQUIPMENT</subject><subject>HUMAN NECESSITIES</subject><subject>HYGIENE</subject><subject>IDENTIFICATION</subject><subject>INORGANIC CHEMISTRY</subject><subject>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</subject><subject>MEASURING</subject><subject>MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL</subject><subject>MEDICAL OR VETERINARY SCIENCE</subject><subject>METALLURGY</subject><subject>METERING BY VOLUME</subject><subject>NON-METALLIC ELEMENTS</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>PHYSICS</subject><subject>SPICE MILLS</subject><subject>SUCTION CLEANERS IN 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FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY</topic><topic>DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR</topic><topic>DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY</topic><topic>DIAGNOSIS</topic><topic>DOMESTIC ARTICLES OR APPLIANCES</topic><topic>FURNITURE</topic><topic>HOUSEHOLD OR TABLE EQUIPMENT</topic><topic>HUMAN NECESSITIES</topic><topic>HYGIENE</topic><topic>IDENTIFICATION</topic><topic>INORGANIC CHEMISTRY</topic><topic>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</topic><topic>MEASURING</topic><topic>MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL</topic><topic>MEDICAL OR VETERINARY SCIENCE</topic><topic>METALLURGY</topic><topic>METERING BY VOLUME</topic><topic>NON-METALLIC ELEMENTS</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>PHYSICS</topic><topic>SPICE MILLS</topic><topic>SUCTION CLEANERS IN GENERAL</topic><topic>SURGERY</topic><topic>TESTING</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>WALKER C,US</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WALKER C,US</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PIPETTOR STROKE CONTROL MECHANISM</title><date>1973-10-23</date><risdate>1973</risdate><abstract>A pipette assembly for drawing and discharging liquid having a stroke control mechanism that produces a shorter stroke during liquid intake than on liquid discharge to assure complete fluid discharge, the control mechanism including an indexing sleeve carried by a main piston in the pipette, with the sleeve having opposed, axially disposed sets of flexible fingers in annular array that engage cams to positively rotate the indexing member in one direction in step-by-step fashion, bringing high and low stops on the indexing member selectively into engagement with abutments within the pipette.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_epo_espacenet_US3766784A |
| source | esp@cenet |
| subjects | CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE CHEMISTRY COFFEE MILLS COMPOUNDS THEREOF DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY DIAGNOSIS DOMESTIC ARTICLES OR APPLIANCES FURNITURE HOUSEHOLD OR TABLE EQUIPMENT HUMAN NECESSITIES HYGIENE IDENTIFICATION INORGANIC CHEMISTRY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL MEDICAL OR VETERINARY SCIENCE METALLURGY METERING BY VOLUME NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS SPICE MILLS SUCTION CLEANERS IN GENERAL SURGERY TESTING TRANSPORTING |
| title | PIPETTOR STROKE CONTROL MECHANISM |
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