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US 2004/0106191 A1Published application
Culture flask
AssigneeBecton, Dickinson and Company
InventorAndrew P. Muser
Life of this patent
Estimating the term…
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AssigneeBecton, Dickinson and Company
InventorAndrew P. Muser
Estimating the term…
A tissue culture flask includes a base, a cover and a cap. The base has a bottom wall and a ramp extending up at an obtuse angle from the bottom wall to the front end of the flask. The flask also includes a sidewall enclosure that extends up from the bottom wall and the ramp. The sidewall enclosure includes a front wall at the end of the ramp furthest from the bottom wall. The front wall includes an opening, and a substantially tubular neck extends forward from the opening. The neck has a substantially circular cross-section at the front end. However, portions of the neck at the rear end have a substantially circular cross-section across the top of the neck and a substantially elliptical cross-section across the bottom of the neck. The elliptical sections of the neck are substantially tangent to the ramp at the front wall of the flask. The geometry facilitates access by pipettes, scrapers and other instruments.
A tissue culture flask comprising a bottom wall, a ramp extending up from said bottom wall at an obtuse angle, said ramp having a front end at a portion of said ramp furthest from said bottom wall, a sidewall enclosure extending up from said bottom wall and said ramp, a cover extending across said sidewall enclosure in opposed spaced relationship to said bottom wall and said ramp, said sidewall enclosure including a front wall panel extending up from said front end of said ramp, said front wall having an opening formed therethrough, a substantially tubular neck extending outwardly from said front wall at said opening for providing communication to portions of said flask bounded by said sidewall enclosure, portions of said tubular neck adjacent said opening in said front wall defining an upwardly concave elliptical arc and a downwardly concave circular arc.
A tissue culture flask having a base unitarily molded from a plastic material, said base comprising a substantially rectangular bottom wall having opposite front and rear ends and opposed sides, a substantially planar isosceles trapezoidal ramp extending from said front end of said bottom wall and aligned to said bottom wall at an obtuse angle, said ramp having a front end parallel to said front end of said bottom wall and first and second sides converging from said bottom wall toward said front end of said ramp, a back wall extending up from said back end of said bottom wall, first and second sidewalls extending up from said first and second sides of said bottom wall, first and second transition walls extending up from said first and second converging sides of said ramp and a front wall extending up from said front end of said ramp, said front wall having an opening formed therethrough and a substantially tubular neck extending out from said opening in said front wall, said tubular neck having a passage extending therethrough and into said flask, portions of said tubular neck at said opening in said front wall having an elliptically generated upwardly concave surface substantially tangent to said front end of said ramp, said tissue culture flask further having a cover secured to said back wall, said front wall, said sidewalls and said transition walls in opposed spaced relationship to said bottom wall and said ramp.
Dependencies are inferred from the claim text.