Molded plastic flask
View Patent ↗A dual convex flask is of one-piece integrally molded plastic construction. The flask has opposed front and back walls each with a convex label panel area at a first radius of curvature and axially spaced bumpers that extend outwardly from opposite ends of the panel area. Opposed substantially flat sidewalls connect adjacent side edges of the front and back walls. The bumpers on each of the front and back walls have a second radius of curvature that is greater than the first radius of curvature, such that the bumpers have a radial depth perpendicular to the label panel area which is greatest at the ends of the bumpers adjacent to the sidewalls and least at the center of the panel area.
1. A flask of molded plastic construction, comprising:
a side wall; and
opposed front and back walls, at least one of which has
a convex label panel area at a first radius of curvature and
a pair of spaced bumpers on opposite ends of said label panel area, said bumpers having a second radius of curvature that is greater than said first radius of curvature, such that said bumpers have a radial depth perpendicular to said label panel area which is greatest at ends of said bumpers and decreases toward the center of said label panel areas
wherein said convex label panel area extends to said side wall.
2. The flask set forth in claim 1 having laterally spaced sidewalls connecting adjacent side edges of said front and back walls, said sidewalls being substantially flat and said ends of said bumpers being disposed at said sidewalls.
3. The flask set forth in claim 2 , wherein said front and back walls are mirror images of each other.
4. The flask according to claim 1 , wherein said convex label panel area and said pair of spaced bumpers converge with said sidewall.
5. A dual convex flask that includes a body of one-piece integrally molded plastic construction, comprising:
opposed front and back walls each with a convex label panel area at a first radius of curvature and
axially spaced bumpers that extend outwardly from opposite ends of said panel area, and
opposed substantially flat sidewalls connecting adjacent side edges of said front and back walls, said bumpers on each of said front and back walls having a second radius of curvature that is greater than said first radius of curvature such that said bumpers have a radial depth perpendicular to said label panel area which is greatest at ends of said bumpers adjacent to said sidewalls and least at a center of said panel area,
wherein said convex label panel area extends to said opposed substantially flat sidewalls.
6. The flask set forth in claim 5 wherein said front and back walls are mirror images of each other.
7. The flask according to claim 5 , wherein said convex label panel area and said axially spaced bumpers converge with said opposed substantially flat sidewalls.