Manual pipette
AssigneeHamilton Company
InventorsVictor C. Strandberg, Robert F. Scalese, Phillip C. Trenholme, Jan M. Conover, Scott T. Kozel, Chih C. Chen, Daniel J. Driscoll
Life of this patent
Estimating the term…
Abstract
A manual pipette having a cushioned hand grip area and a tip ejector. The ejector is located strategically so that an operator can easily manipulate either the ejector or a pipette fluid plunger which introduces and expels fluid to be sampled. The pipette is ergonomically balanced and designed to prevent operator fatigue. The pipette includes structure for in field calibration and volume variation.
Claims66
A hand-held pipette for transferring fluid comprising, in combination:
- a hand receiving portion having an ergonomic contour including a central zone of greater cross-section corresponding to a palm and finger receiving area.
- a combination fluid inlet and outlet located adjacent said hand portion,
- means for introducing and dispensing fluid into and out of the pipette via said inlet and outlet, and
- a resilient cushion circumscribing an outer periphery of said hand receiving portion including said central zone of greater cross-section of said pipette to reduce fatigue and trauma to a hand of a technician operating said pipette.
A hand-held pipette comprising, in combination:
- a hand receiving portion having an ergonomic contour,
- a combination fluid inlet and outlet located adjacent said hand portion,
- means for introducing and dispensing fluid into and out of the pipette via said inlet and outlet, and
- a resilient cushion disposed along an outer periphery of said hand receiving portion to reduce fatigue and trauma to a technician operating said pipette,
- wherein said hand receiving portion includes an underlying frame having at least one rib projecting therefrom to support said cushion.
A hand-held pipette comprising, in combination:
- a hand receiving portion having an ergonomic contour,
- a combination fluid inlet and outlet located adjacent said hand portion,
- means for introducing and dispensing fluid into and out of the pipette via said inlet and outlet, and
- a resilient cushion disposed along an outer periphery of said hand receiving portion to reduce fatigue and trauma to a technician operating said pipette,
- wherein said combination fluid inlet and outlet comprises a removeable tip and means for ejecting said tip including an ejector tab located on an end of said pipette opposite said tip, and
- wherein said ejector tab is attached to an ejector plate, said ejector plate being elongate and curved to conform to a curved interior of said hand receiving portion.
Dependencies are inferred from the claim text.