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US 4,770,854 AGranted
Laboratory flask
AssigneeCostar Corporation
InventorGeorge F. Lyman
Life of this patent
Estimating the term…
Abstract
A laboratory flask includes a body and a canted neck at one end joined to the main surface by an inclined ramp. The neck diameter is maximized and along with the ramp allows the user excellent accessibility to the four corners of the flask end wall with a pipette and to the four corners of the growing surface with a scraper.
Claims26
A laboratory flask comprising
- a body having top and bottom walls joined by two side walls and first and second end walls, said bottom wall having a main portion generally parallel to the top wall,
- a neck providing access to the body open at one end and connected at its other end to the second end wall and canted upwardly therefrom toward its open end, said neck being circular at said open end,
- and a ramp forming part of the bottom wall adjacent the second end wall and extending upwardly from the plane of the main portion of the bottom wall, and forming an obtuse angle therewith, toward the plane of the top wall and joining the second end wall,
- said neck having top and bottom sides which diverge from one another in the direction of the open end and coaxial cylindrical side walls which terminate in said circular open end, said top and bottom sides of the neck being connected to the second end wall immediately adjacent the top and bottom edges thereof.
1 more element
A laboratory flask comprising
- a body having top and bottom walls joined by two side walls and first and second end walls, said bottom wall having a main portion generally parallel to the top wall,
- a neck providing access to the body open at one end and connected at its other end to the second end wall and canted upwardly therefrom toward its open end,
- and a ramp forming part of the bottom wall adjacent the second end wall and extending upwardly from the plane of the main portion of the bottom wall toward the plane of the top wall and joining the second end wall,
- said neck having top and bottom sides which diverge from one another in the direction of the open end, and coaxial cylindrical side walls which terminate in said circular open end said top and bottom sides of the neck being connected to the second end wall immediately adjacent the top and bottom edges thereof,
- said neck also having a planar area on the bottom side and converging toward the top side of the neck in the direction of the second wall, said neck being circular at its open end,
- said ramp being inclined at an angle of approximately 22.degree. with the plane of the main portion of the bottom wall.
3 more elements
A laboratory flask comprising
- a body having top and bottom walls joined by two side walls and first and second end walls,
- a neck providing access to the body open at one end and connected at its other end to the second end wall and canted upwardly therefrom toward its open end, said neck being circular at said open end,
- said neck having top and bottom sides which diverge from one another in the direction of the open end and coaxial cylindrical side walls which terminate in said circular open end, the bottom side of the neck being inclined upwardly at an angle of approximately 8.degree. with the plane of the bottom wall.
Dependencies are inferred from the claim text.