Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
402 words
A container and a lid for closing said container, said container having a rim, said rim having a raised portion extending inwardly of the side wall of the container, said raised portion being of an inverted U-shape which comprises an outer vertical wall, a spaced inner vertical wall connected by an arcuate-shaped top to said outer vertical wall, said outer vertical wall spaced inwardly of the side of the container and defining an annular space therebetween, said lid removably mounted on said rim and having a seating portion which is of an inverted U-shape which comprises an outer vertical wall and a spaced inner vertical wall connected by an arcuate-shaped top, said outer vertical wall of the lid being equal to or shorter than the inner vertical wall of said lid, said lid seating portion adapted to overlie and frictionally engage the raised portion of the rim with the vertical walls of the lid seating portion frictionally engaging the vertical walls of the rim raised portion and with the outer vertical wall of the lid extending into the annular space and the friction engaging surfaces between the inner wall of the lid, and the inner wall of the rim being equal to or greater than the friction engaging surfaces of the outer wall of the rim and the outer wall of the lid, said inner vertical wall of the lid being substantially parallel with the inner wall of the rim and in frictional contact therewith substantially along the entire length of the inner wall of the lid, said outer vertical wall of the lid having a peripheral edge positioned inwardly of the side wall of the container, said lid having a central concave or dish-shaped portion and an annular downwardly extending relatively short peripheral wall with the peripheral wall continuing outwardly and inclined angularly upward to form an intermediate planar wall which then continues upwardly to form an inner vertical wall of the lid, whereby the pressure inside the container will cause the concave or dish-shaped portion of the lid to tend to move upwardly above a horizontal plane to a generally convex shape with the inclined angular intermediate wall changing its angle of inclination towards a generally horizontal plane to cause the inner vertical wall of the lid to apply a radial pressure against the spaced inner vertical wall of the rim to tighten the lid with respect to the rim.
Claim 2
Dependent Claim
402 words
A container and a lid for closing said container, said container having a rim, said rim having a raised portion extending inwardly of the side wall of the container, said raised portion being of an inverted U-shape which comprises an outer vertical wall, a spaced inner vertical wall connected by an arcuate-shaped top to said outer vertical wall, said outer vertical wall spaced inwardly of the side of the container and defining an annular space therebetween, said lid removably mounted on said rim and having a seating portion which is of an inverted U-shape which comprises an outer vertical wall and a spaced inner vertical wall connected by an arcuate-shaped top, said outer vertical wall of the lid being equal to or shorter than the inner vertical wall of said lid, said lid seating portion adapted to overlie and frictionally engage the raised portion of the rim with the vertical walls of the lid seating portion frictionally engaging the vertical walls of the rim raised portion and with the outer vertical wall of the lid extending into the annular space and the friction engaging surfaces between the inner wall of the lid, and the inner wall of the rim being equal to or greater than the friction engaging surfaces of the outer wall of the rim and the outer wall of the lid, said inner vertical wall of the lid being substantially parallel with the inner wall of the rim and in frictional contact therewith substantially along the entire length of the inner wall of the lid, said outer vertical wall of the lid having a peripheral edge positioned inwardly of the side wall of the container, said lid having a central concave or dish-shaped portion and an annular downwardly extending relatively short peripheral wall with the peripheral wall continuing outwardly and inclined angularly upward to form an intermediate planar wall which then continues upwardly to form an inner vertical wall of the lid, whereby the pressure inside the container will cause the concave or dish-shaped portion of the lid to tend to move upwardly above a horizontal plane to a generally convex shape with the inclined angular intermediate wall changing its angle of inclination towards a generally horizontal plane to cause the inner vertical wall of the lid to apply a radial pressure against the spaced inner vertical wall of the rim to tighten the lid with respect to the rim.
Claim 3
Dependent Claim
61 words
A structure as defined in claim 1 in which when the maximum pressure is built up inside the container and the dish-shaped portion of the lid reaches its maximum convex shape the intermediate planar wall will be inclined in an opposite angular inclination from its initial angular inclination to apply the maximum radial thrust against the vertical wall of the lid.