Claims
- 1. A pressure-measuring vessel system for microwave assisted chemical processes, said vessel system comprising:
a pressure resistant vessel that is otherwise transparent to microwave radiation; a pressure-resistant closure for the mouth of said vessel, portions of said closure including a pressure resistant synthetic membrane; a pressure transducer external to said vessel; and a needle extending from and in fluid communication with said transducer, said needle extending through said membrane and into said vessel and into fluid communication with the interior of said vessel for permitting the pressure inside said vessel to be applied directly against said transducer while said closure and membrane otherwise maintain the pressure resistant characteristics of said vessel.
- 2. A vessel system according to claim 1 wherein said closure comprises a metal perimeter for gripping said vessel at said mouth; and wherein said membrane comprises the center portion of said closure surrounded by said metal perimeter.
- 3. A vessel system according to claim 2 wherein said metal perimeter is clamped to said mouth of said vessel.
- 4. A vessel system according to claim 1 that is formed of glass.
- 5. A vessel system according to claim 1 and further comprising:
means for securing said membrane and said closure against pressure developed in said vessel during a chemical reaction.
- 6. A pressure measurement assembly according to claim 1 wherein said vessel comprises a cylinder and said closure comprises a cap for said vessel.
- 7. A pressure measurement vessel according to claim 1 wherein said membrane is formed of a material selected from the group consisting of butyl rubber and siloxane polymers.
- 8. A vessel system for microwave assisted chemistry comprising:
a pressure resistant reaction vessel formed of a microwave transparent material; said vessel having a cylindrical portion defined by concentric inner and outer walls that terminates in a cylindrical opening; an annular rim extending outwardly from the circumference of said cylindrical opening, and defining a rim circumference concentric with said cylindrical portion and said cylindrical opening; a pressure resistant fitting for said reaction vessel and fixed to said rim; and said vessel having a curved outer wall portion between said concentric outer wall and said rim circumference.
- 9. A vessel system according to claim 8 wherein said pressure resistant fitting includes an annular metal portion clamped to said rim.
- 10. A vessel system according to claim 9 wherein said pressure resistant fitting includes a penetrable septum.
- 11. A vessel system according to claim 8 wherein said pressure resistant fitting comprises a removable collet that engages said vessel and said rim.
- 12. A vessel system according to claim 8 wherein said reaction vessel is formed of glass.
- 13. A pressure-measuring vessel system for microwave assisted chemical processes, said vessel system comprising:
a pressure resistant cylindrical reaction vessel that is otherwise transparent to microwave radiation; a pressure-resistant closure clamped on the mouth of said vessel, said closure being formed of a deformable metal ring and a pressure resistant penetrable septum urged against said mouth of said vessel by said metal ring; a pressure transducer external to said vessel; and a needle extending from and in fluid communication with said transducer, said needle extending through said membrane and into said vessel and into fluid communication with the interior of said vessel for permitting the pressure inside said vessel to be applied directly against said transducer while said metal ring and said septum otherwise maintain the pressure resistant characteristics of said vessel.
- 14. A pressure-measuring vessel system according to claim 13 wherein said transducer comprises an adjustable transducer assembly that can move in linear relationship to a housing and with respect to said reaction vessel.
- 15. A pressure-measuring vessel system according to claim 14 further comprising a plurality of collet leaves held in flexible relationship to a collet trunk by a garter spring so that when said leaves are attached to said collet trunk by said garter spring, said leaves can flex inwardly and outwardly with respect to the overall axis of said transducer assembly.
- 16. A pressure-measuring vessel system according to claim 15 wherein each said leaf further includes a gripping edge that engages said closure on said reaction vessel
- 17. A pressure-measuring vessel system according to claim 16 further comprising a plurality of retaining screws received into a corresponding plurality of threaded bolts; and
said threaded bolts being received into a corresponding plurality of openings in said collet trunk.
- 18. A pressure-measuring vessel system according to claim 17 wherein said retaining screws are moveable parallel to the axis of said transducer assembly in respective collet adjustment slots to thereby permit said collet housing and said collet leaves to be tightened in place in an appropriate relationship to said vessel.
- 19. A pressure-measuring vessel system according to claim 13 wherein said septum is selected from the group consisting of butyl rubber and siloxane polymers.
- 20. A pressure-measuring vessel system according to claim 13 wherein said reaction vessel is selected from the group consisting of glass, quartz and polymers and
Parent Case Info
[0001] This is a continuation of application Ser. No. 09/773,898 filed Jan. 31, 2001.
Continuations (1)
|
Number |
Date |
Country |
Parent |
09773898 |
Jan 2001 |
US |
Child |
10863531 |
Jun 2004 |
US |