Back to results
US 7,093,507 B2Granted
Pipette control arrangement
AssigneeBel-Art Products, Inc.
InventorsPaul Thom, Douglas W. Harrison, Francis Gomes, David Landsberger
Life of this patent
Estimating the term…
Abstract
A pipette control arrangement consists of a housing assembly adapted for operatively housing a pump assembly and for operatively connecting a pipette to the pump assembly via a flexible air tube. The pump assembly is adapted to independently accommodate a plurality of volume specific removable cylinder-plunger systems. The pipette control arrangement may further include a quick release trigger operated mechanism for rapidly and or in large volumes dispensing liquid from an attached pipette.
Claims15
A pipette control arrangement comprising:
- a housing assembly;
- a pump assembly operatively connected to the housing assembly;
- a pipette connector operatively connected to the pump assembly and adapted to operatively receive a pipette;
- a quick release mechanism for rapidly discharging at least a portion of a liquid from the pipette, the quick release mechanism having an engaging plug with at least a first engaging portion provided for engagement with and disengagement from the pipette connector, so as to define respective closed and open positions of the pipette connector in such a manner that in the closed position the first engaging portion engages the pipette connector and in the open position the first engaging portion is released from its engagement with the pipette connector, and
- a mechanical drive assembly provided to discharge the liquid in the closed position of the pipette connector, the mechanical drive assembly includes a thumb wheel pinion sub-assembly and a plunger mounted rack sub-assembly operatively connected to the thumb wheel pinion sub-assembly.
2 more elements
A pipette control arrangement comprising:
- a housing assembly having a handle with an interior portion, said interior portion formed with at least one restrictive member extending outwardly therefrom;
- a pump assembly operatively connected to the housing assembly, the pump assembly is adapted to accommodate a plurality of volume-specific cylinder-plunger units, each said cylinder-plunger unit having a cylinder defined by an exterior thereof, at least one securing arrangement associated with the exterior of the cylinder for fixedly positioning each said volume-specific cylinder-plunger unit within the interior portion of the handle;
- said at least one securing arrangement comprises a stabilizing part for stabilizing the cylinder-plunger unit within the interior portion of the handle and an engaging part adapted for engagement with said at least one restrictive member, and
- said pump assembly includes a mechanical drive assembly including a thumb wheel pinion sub-assembly and a plunger mounted rack sub-assembly operatively connected to the thumb wheel pinion sub-assembly;
- whereby said engaging part is adapted to prevent longitudinal movement of the cylinder-plunger unit within the interior portion of the handle and said stabilizing part is adapted to prevent transverse movement of the cylinder-plunger unit within the interior portion of the handle.
2 more elements
Dependencies are inferred from the claim text.