The valve sealing system for a reagent package includes an annular cylindrical gasket seated in a channel formed in the package. A rocker valve on the package pivots relative to the annular cylindrical gasket which surrounds an opening to the chamber of the reagent package. The annular channel inclu
The valve sealing system for a reagent package includes an annular cylindrical gasket seated in a channel formed in the package. A rocker valve on the package pivots relative to the annular cylindrical gasket which surrounds an opening to the chamber of the reagent package. The annular channel includes a radially inner peripheral channel sidewall, a radially outer peripheral channel sidewall, and a bottom portion. An inclined peripheral wall portion of the channel intersects one of the channel sidewalls at an obtuse angle and the bottom portion of the channel. When the rocker valve is in a valve closed position it engages the annular cylindrical gasket to provide a substantially leak-tight seal.
대표청구항▼
What is claimed is: 1. A reagent package comprising, a) a container having an inside chamber and an opening to said inside chamber, b) a rocker valve on said container at said opening, said rocker valve having a curved face portion and a pivot mounted on said container for pivotal movement of said
What is claimed is: 1. A reagent package comprising, a) a container having an inside chamber and an opening to said inside chamber, b) a rocker valve on said container at said opening, said rocker valve having a curved face portion and a pivot mounted on said container for pivotal movement of said curved face portion from a valve open position, wherein said rocker valve permits outside communication into the chamber through said container opening, to a valve closed position wherein said rocker valve closes said container opening to prevent outside communication into the chamber through the container opening, c) said container including an annular channel surrounding said container opening and a compressible annular cylindrical gasket seated in said channel, said compressible annular cylindrical gasket including a cross section which includes one end portion, another end portion opposite the one end portion, an inner radial surface and an outer radial surface, and an elevation from the one end portion to the other end portion which is greater than a radial gasket thickness measured between the inner radial surface and the outer radial surface of the cross section of the compressible annular cylindrical gasket, said compressible annular cylindrical gasket having said one annular end portion that engages said curved face portion when the curved face portion is moved from the valve open position to the valve closed position whereby, said one annular end portion is in annular sealing contact with the curved face portion of said rocker valve when the rocker valve is in the valve closed position, d) said annular channel including a radially inner peripheral channel sidewall and a radially outer peripheral channel sidewall, and a bottom portion, and e) said annular channel further including an inclined peripheral wall that intersects one of said channel sidewalls at an obtuse angle wherein movement of the curved face portion from the valve open position to the valve closed position deforms the compressible annular cylindrical gasket in a radial direction at each annular end portion within the annular channel. 2. The reagent package as claimed in claim 1 wherein the inclined peripheral wall does not intersect the other of said channel sidewalls. 3. The reagent package as claimed in claim 1 wherein the inclined peripheral wall also intersects the bottom portion of said channel. 4. The reagent package as claimed in claim 1 wherein the inclined peripheral wall intersects the radially inner peripheral channel sidewall. 5. The reagent package as claimed in claim 2 wherein the inclined peripheral wall intersects the radially inner peripheral channel sidewall. 6. The reagent package as claimed in claim 1 wherein the annular cylindrical gasket has spaced inner and outer cylindrical wall portions that each define a curved cylindrical surface. 7. The reagent package as claimed in claim 6 wherein said ring gasket has an opposite end portion that is of similar shape to the one end portion when said ring gasket is not subject to end-to-end compression. 8. The reagent package as claimed in claim 6 wherein the annular cylindrical gasket is in end-to-end compression and the opposite end portion of the annular cylindrical gasket is urged against the inclined peripheral wall and the bottom portion of said channel when the rocker valve is in the valve closed position, the end-to-end height of the annular cylindrical gasket being selected such that one end portion of the annular cylindrical gasket in sealing contact with the curved face portion of the rocker valve, exerts a predetermined force on the curved face of the rocker valve. 9. The reagent package as claimed in claim 1 wherein the annular cylindrical gasket is formed of rubber. 10. A reagent package comprising, a) a container having an inside chamber and an opening to said inside chamber, b) a rocker valve on said container at said opening, said rocker valve having a curved face portion and a pivot mounted on said container for pivotal movement of said curved face portion from a valve open position, wherein said rocker valve permits outside communication into the chamber through said container opening, to a valve closed position wherein said rocker valve closes said container opening to prevent outside communication into the chamber through the container opening, c) said container including an annular channel surrounding said container opening and a compressible annular cylindrical gasket seated in said channel, said compressible annular cylindrical gasket including a cross section which includes an upper end portion, a lower end portion opposite the upper end portion, an inner radial surface and an outer radial surface, and an elevation from the upper end portion to the lower end portion which is greater than a radial gasket thickness measured between the inner radial surface and the outer radial surface of the cross section of the compressible annular cylindrical gasket, the upper end portion engageable with the curved face portion of said rocker valve when the curved face portion of the rocker valve is moved from the valve open position to the valve closed position, d) said annular channel including a radially inner peripheral channel sidewall and a radially outer peripheral channel sidewall, and a bottom portion, and e) said annular channel further including an inclined peripheral wall that intersects the radially inner peripheral channel sidewall at an obtuse angle and also intersects the bottom portion of said channel wherein movement of the curved face portion from the valve open position to the valve closed position deforms the compressible annular cylindrical gasket in a radial direction within the annular channel. 11. The reagent package as claimed in claim 10 wherein the annular cylindrical gasket is in end-to-end compression and the opposite end portion of the annular cylindrical gasket is urged against the inclined peripheral wall and the bottom portion of said channel when the rocker valve is in the valve closed position, the end-to-end height of the annular cylindrical gasket being selected such that one end portion of the annular cylindrical gasket that is in sealing contact with the curved face portion of the rocker valve, exerts a predetermined force on the curved face of the rocker valve. 12. A method of sealing a valve controlled opening with a rocker valve comprising, (a) supporting a rocker valve for pivotal movement at an opening in a hollow member such that the rocker valve is pivotable with respect to said hollow member from a valve-open position, wherein the rocker valve permits communication into the hollow member through the opening, and a valve-closed position, wherein the rocker valve closes the opening in the hollow member to prevent outside communication into the hollow member through the opening, (b) providing the rocker valve with a curved face portion that blocks the opening in the hollow member when the rocker valve is in the valve-closed position, (c) forming an annular channel in the hollow member to encircle the opening in the hollow member and providing the annular channel with a radially inner peripheral channel sidewall, a radially outer peripheral channel sidewall, a bottom portion and an inclined peripheral wall that intersects one of the channel sidewalls at an obtuse angle, (d) providing a compressible annular cylindrical gasket in the annular channel, the compressible annular cylindrical gasket including a cross section which includes one end portion, an opposite end portion opposite the one end portion, an inner radial surface, an outer radial surface, an end-to-end height measured from the one end portion to the opposite end portion, and a radial gasket thickness measured between the inner radial surface and the outer radial surface of the cross section of the compressible annular cylindrical gasket, such that the one end portion of the compressible annular cylindrical gasket is at the bottom portion of the annular channel and the opposite end portion of the cylindrical gasket engages the curved face portion of the rocker valve when the rocker valve is in the valve-closed position, and (e) providing the annular cylindrical gasket with the end-to-end height being greater than the radial gasket thickness that enables the one end portion of the annular cylindrical gasket to be urged against the inclined peripheral wall portion and the bottom portion of the channel, the compressible annular cylindrical gasket to deform in a radial direction within the annular channel, and the opposite end portion to engage against the curved-face portion of the rocker valve when the rocker valve is moved from the valve open position to the valve closed position, to form a leak-tight seal with the rocker valve around the opening in the hollow member when the rocker valve is in the valve closed position. 13. The method of claim 12 wherein the step of forming the annular channel includes forming the inclined peripheral wall to also intersect the bottom portion of the annular channel. 14. The method of claim 13 wherein the step of forming the annular channel includes forming the inner peripheral wall to intersect the radially inner peripheral channel sidewall and the bottom portion of the channel. 15. The method of claim 12 including selecting the end-to-end height of the annular cylindrical gasket to enable the annular cylindrical gasket to exert a predetermined force on the curved face of the rocker valve when the rocker valve is in the valve-closed position. 16. The reagent package as claimed in claim 1 wherein the annular cylindrical gasket has an inner cylindrical surface and an outer cylindrical surface that are substantially parallel to each other when said rocker valve is in said valve open position. 17. The reagent package as claimed in claim 10 wherein the annular cylindrical gasket has an inner cylindrical surface and an outer cylindrical surface that are substantially parallel to each other when said rocker valve is in said valve open position. 18. The method of claim 12 including forming the annular cylindrical gasket with an inner cylindrical surface and an outer cylindrical surface that are substantially parallel to each other when the rocker valve is in the valve open position. 19. The reagent package of claim 1 wherein the annular channel includes a radial channel thickness which is greater than the radial gasket thickness and wherein the compressible annular cylindrical gasket deforms radially within the annular channel when said one annular end portion is in annular sealing contact with the curved face portion of said rocker valve in the valve closed position. 20. The reagent package of claim 10 wherein the annular channel includes a radial channel thickness measured between the radially inner peripheral channel sidewall and the radially outer peripheral channel sidewall, which is greater than the radial gasket thickness. 21. The method of claim 12 wherein the annular channel includes a radial channel thickness measured between the radially inner peripheral channel sidewall and the radially outer peripheral channel sidewall, and the radial channel thickness is greater than the radial gasket thickness.
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