초록 ▼

The present invention is directed to rigid disposable food containers provided with a relatively steep sidewall with a generally linear profile and an outwardly flared arcuate flange portion. The containers are further characterized by a flange outer vertical drop wherein the ratio of the length of

The present invention is directed to rigid disposable food containers provided with a relatively steep sidewall with a generally linear profile and an outwardly flared arcuate flange portion. The containers are further characterized by a flange outer vertical drop wherein the ratio of the length of the vertical drop to the characteristic diameter of the container is greater than about 0.01. By virtue of unique geometry, the containers of the invention exhibit improved rigidity and/or rim stiffness yet have favorable runnability in pressware manufacturing systems characteristic of plates of lower strength.

대표청구항 ▼

The present invention is directed to rigid disposable food containers provided with a relatively steep sidewall with a generally linear profile and an outwardly flared arcuate flange portion. The containers are further characterized by a flange outer vertical drop wherein the ratio of the length of

The present invention is directed to rigid disposable food containers provided with a relatively steep sidewall with a generally linear profile and an outwardly flared arcuate flange portion. The containers are further characterized by a flange outer vertical drop wherein the ratio of the length of the vertical drop to the characteristic diameter of the container is greater than about 0.01. By virtue of unique geometry, the containers of the invention exhibit improved rigidity and/or rim stiffness yet have favorable runnability in pressware manufacturing systems characteristic of plates of lower strength. which is connected to an analytical instrument and is displaceable along a sampling axis, said vial closure device comprising: a tubular body member having opposite ends and locatable in the mouth of the vial, said tubular body member having at one end an aperture through which gas may pass from the vial into said tubular body member, said tubular body member further comprising a valve seat; a first seal for making a substantially gas-tight seal between said tubular body member and the vial; a second seal arranged on said sampling axis at the other end of said tubular body member for providing a gas-tight seal around the gas sampling device inserted through said second seal into said tubular body member; a valve body which cooperates with said valve seat, said aperture being closed by said valve body to prevent gas from passing from the vial into said tubular body member until said valve body is displaced along a valve axis by contact with the gas sampling device inserted into said tubular body member through said second seal by displacement along said sampling axis, thereby allowing gas to pass from the vial into said tubular body member and the gas sampling device; wherein a) said valve axis and said sampling axis are disposed so that said valve body always prevents the gas sampling device from being inserted beyond said valve body into the vial; b) said valve seat and said valve body are arranged so that the gas sampling device may be inserted far enough through said second seal so as to allow gas to be withdrawn from the interior of said tubular body member without displacing said valve body; and c) the gas sampling device makes a gas-tight seal to the second seal before the valve body is displaced; and wherein said second seal operates to close the interior of said tubular body member in the absence of the gas sampling device to make the interior of said tubular body member substantially gas-tight. 2. A vial closure device for closing the mouth of a vial which in use contains one of a gas and vapor to be analyzed by extraction through a gas sampling device which is connected to an analytical instrument and is displaceable along a sampling axis, said vial closure device comprising: a tubular body member having opposite ends and locatable in the mouth of the vial, said tubular body member having at one end an aperture through which gas may pass from the vial into said tubular body member, said tubular body member further comprising a valve seat; a first seal for making a substantially gas-tight seal between said tubular body member and the vial; a second seal arranged on said sampling axis at the other end of said tubular body member for providing a gas-tight seal around the gas sampling device inserted through said second seal into said tubular body member; a valve body which cooperates with said valve seat, said aperture being closed by said valve body to prevent gas from passing from the vial into said tubular body member until said valve body is displaced along a valve axis by contact with the gas sampling device inserted into said tubular body member through said second seal by displacement along said sampling axis, thereby allowing gas to pass from the vial into said tubular body member and the gas sampling device; wherein a) said valve axis and said sampling axis are disposed so that said valve body always prevents the gas sampling device from being inserted beyond said valve body into the vial; b) said valve seat and said valve body are arranged so that the gas sampling device may be inserted far enough through said second seal so as to allow gas to be withdrawn from the interior of said tubular body member without displacing said valve body; and c) the gas sampling device makes a gas-tight seal to the second seal before the valve body is displaced; and wherein said second seal comprises a septum. 3. A vial closure device for closing the mouth of a vial which in use contains one of a gas a nd vapor to be analyzed by extraction through a gas sampling device which is connected to an analytical instrument and is displaceable along a sampling axis, said vial closure device comprising: a tubular body member having opposite ends and locatable in the mouth of the vial, said tubular body member having at one end an aperture through which gas may pass from the vial into said tubular body member, said tubular body member further comprising a valve seat; a first seal for making a substantially gas-tight seal between said tubular body member and the vial; a second seal arranged on said sampling axis at the other end of said tubular body member for providing a gas-tight seal around the gas sampling device inserted through said second seal into said tubular body member; a valve body which cooperates with said valve seat, said aperture being closed by said valve body to prevent gas from passing from the vial into said tubular body member until said valve body is displaced along a valve axis by contact with the gas sampling device inserted into said tubular body member through said second seal by displacement along said sampling axis, thereby allowing gas to pass from the vial into said tubular body member and the gas sampling device; wherein a) said valve axis and said sampling axis are disposed so that said valve body always prevents the gas sampling device from being inserted beyond said valve body into the vial; b) said valve seat and said valve body are arranged so that the gas sampling device may be inserted far enough through said second seal so as to allow gas to be withdrawn from the interior of said tubular body member without displacing said valve body; and c) the gas sampling device makes a gas-tight seal to the second seal before the valve body is displaced; and wherein the exterior portion of said tubular body member is provided with a flange which overlaps the tap of a sample vial when said tubular body member is located in the mouth of that vial, said first seal comprising one of a rubber or plastic washer disposed between the top of the vial and said flange, and wherein said tubular body member is securable to the vial by a threaded retaining ring passed over said tubular body member and engaged with threads on the exterior of the vial. id walls, inlet means extending through one of the walls for introducing fluid to the pressure vessel, outlet means extending through one of the walls for removing fluid from the pressure vessel, the outlet means including an outlet port, a pressure gradient member located within the chamber of the pressure vessel through which fluid passing through the pressure vessel flows as the fluid passes through the pressure vessel, the pressure gradient member including an outlet port, flexible resilient tube means extending between the outlet port of the pressure gradient member and the outlet port of the outlet means for mounting the pressure gradient member within the chamber formed by the walls of the pressure vessel and for connecting the outlet port of the pressure gradient member to the outlet port of the outlet means and for permitting the pressure gradient member to laterally shift inside the pressure vessel to press against the side wall of the pressure vessel, the flexible resilient tube mean having a first end portion and a second end portion, and the first end portion of the flexible resilient tube means being fastened to the outlet port of the outlet means sealing between the first end portion of the flexible resilient tube means and the outlet port of the outlet means. 2. The pressure vessel of claim 1, the flexible resilient tube means comprising a flexible resilient tube, the flexible resilient tube having a first end portion and a second end portion, the first end portion being mounted over the outlet port of the pressure gradient member and the second end portion being mounted over the outlet port of the outlet means. 3. The pressure vessel of claim 1, the pressure gradient member comprising a cartridge. 4. The pressure vessel of claim 1, the flexible resilient tube means comprising a flexible resilient tube, the flexible resilient tube having a first end portion and a second end portion, the first end portion being mounted over the outlet port of the pressure gradient member and the second end portion being mounted over the outlet port of the outlet means, and the pressure gradient member comprising a cartridge. 5. A pressure vessel comprising a top wall, a bottom wall, a side wall extending between the top wall and the bottom wall, and a chamber formed by said walls, inlet means extending through one of the walls for introducing fluid to the pressure vessel, outlet means extending through one of the walls for removing fluid from the pressure vessel, the outlet means including an outlet port, a pressure gradient member located within the chamber of the pressure vessel through which fluid passing through the pressure vessel flows as the fluid passes through the pressure vessel, the pressure gradient member including an outlet port, and flexible resilient tube means extending between the outlet port of the pressure gradient member and the outlet port of the outlet means for mounting the pressure gradient member within the chamber formed by the walls of the pressure vessel and for providing a seal between a first end portion of the flexible resilient tube means and the outlet port of the outlet means and a seal between a second end portion of the flexible resilient tube means and the outlet port of the pressure gradient member and for connecting the outlet port of the pressure gradient member to the outlet port of the outlet means and for permitting the pressure gradient member to laterally shift inside the pressure vessel to press against the side wall of the pressure vessel to provide substantially uniform support of a load on the pressure gradient member created by side impact to the pressure vessel without breaking the seal between the first end portion of the flexible resilient tube means and the outlet port of the outlet means and the seal between the second end portion of the flexible resilient tube means and the outlet port of the pressure gradient member. 6. The pressure vessel of claim 5, the flexible resilient tube means comprising a flexible resilient tube, the flexible resilient tube having a first end portion and a second end portion, the first end portion being mounted over the outlet port of the pressure gradient member and the second end portion being mounted over the outlet port of the outlet means. 7. The pressure vessel of claim 5, the pressure gradient member comprising a cartridge. 8. The pressure vessel of claim 5, the flexible resilient tube means comprising a flexible resilient tube, the flexible resilient tube having a first end portion and a second end portion, the first end portion being mounted over the outlet port of the pressure gradient member and the second end portion being mounted over the outlet port of the outlet means, and the pressure gradient member comprising a cartridge. 9. A pressure vessel comprising a top wall, a bottom wall, a side wall extending between the top wall and the bottom wall, and a chamber formed by said walls, inlet means extending through one of the walls for introducing fluid to the pressure vessel, outlet means extending through one of the walls for removing fluid from the pressure vessel, the outlet means including an outlet port, a pressure gradient member located within the chamber of the pressure vessel through which fluid passing through the pressure vessel flows as the fluid passes through the pressure vessel, the pressure gradient member including an outlet port, and a flexible resilient tube extending between the outlet port of the pressure gradient member and the outlet port of the outlet means for mounting the pressure gradient member within the chamber formed by the walls of the pressure vessel and for connecting the outlet port of the pressure gradient member to the outlet port of the outlet means, the flexible resilient tube having a first end portion and a second end portion, the first end portion being press fit over the outlet port of the outlet means and the second end portion being press fit over the outlet port of the pressure gradient member, and the flexible tube permitting the pressure gradient member to laterally shift inside the pressure vessel to press against the side wall of the pressure vessel. 10. The pressure vessel of claim 9, the pressure gradient member comprising a cartridge. 11. A pressure vessel comprising a top wall, a bottom wall, a side wall extending between the top wall and the bottom wall, and a chamber formed by said walls, inlet means extending through one of the walls for introducing fluid to the pressure vessel, outlet means extending through one of the walls for removing fluid from the pressure vessel, the outlet means including an outlet port, a pressure gradient member located within the chamber of the pressure vessel through which fluid passing through the pressure vessel flows as the fluid passes through the pressure vessel, the pressure gradient member including an outlet port, a flexible resilient tube extending between the outlet port of the pressure gradient member and the outlet port of the outlet means for mounting the pressure gradient member within the chamber formed by the walls of the pressure vessel and for connecting the outlet port of the pressure gradient member to the outlet port of the outlet means, and the flexible resilient tube providing substantially uniform support of a load on the pressure gradient member created by side impact to the pressure vessel by permitting the pressure gradient member to laterally shift inside the pressure vessel to press against the side wall of the pressure vessel. 12. The pressure vessel of claim 11, the pressure gradient member comprising a cartridge. 13. A pressure vessel comprising a top wall, a bottom wall, a side wall extending between the top wall and the bottom wall, and a chamber formed by said walls, inlet means extending through one of the walls for introducing fluid to the pressure vesse l, outlet means extending through one of the walls for removing fluid from the pressure vessel, the outlet means including an outlet port, a pressure gradient member located within the chamber of the pressure vessel through which fluid passing through the pressure vessel flows as the fluid passes through the pressure vessel, the pressure gradient member including an outlet port, a flexible resilient tube extending between the outlet port of the pressure gradient member and the outlet port of the outlet means for mounting the pressure gradient member within the chamber formed by the walls of the pressure vessel and for connecting the outlet port of the pressure gradient member to the outlet port of the outlet means, the flexible resilient tube having a first end portion and a second end portion, the flexible tube permitting the pressure gradient member to laterally shift inside the pressure vessel to press against the side wall of the pressure vessel, the first end portion of the flexible resilient tube being fastened to the outlet port of the outlet means, and the second end portion of the flexible resilient tube being fastened to the outlet port of the pressure gradient member. 14. The pressure vessel of claim 13, the pressure gradient member comprising a cartridge.