Microwave Assisted Chemical Synthesis Instrument with Controlled Pressure Release
AssigneeCEM Corporation
InventorsEdward Earl King, James Edward Thomas
Life of this patent
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Abstract
An instrument is disclosed for carrying out controlled microwave assisted chemical processes, and that is particularly useful for handling relatively small samples. The instrument includes a needle, and a needle seal adjacent the needle and having a shaft coaxial with the needle and in communication with the needle. A pressure transducer is opposite the needle seal from the needle and in communication with the shaft. A housing holds the needle to the needle seal and the needle seal to the transducer. A chamber is formed between the housing and the needle seal. A lateral shaft goes through the needle seal from the coaxial shaft to the chamber in the housing, and a valve is in communication with the chamber.
Claims11
A pressure relief structure for a microwave instrument and comprising:
- a needle;
- a needle seal adjacent said needle and having a shaft coaxial with said needle and in communication therewith;
- a pressure transducer opposite said needle seal from said needle and in communication with said shaft;
- a housing holding said needle to said needle seal and said needle seal to said transducer;
- a chamber formed between said housing and said needle seal;
- a lateral shaft through said needle seal from said coaxial shaft to said chamber in said housing;
- and
- a valve in communication with said chamber.
An attenuator assembly for a microwave instrument comprising:
- a microwave attenuator;
- a lock ring on said attenuator for locking said attenuator to a microwave cavity;
- an annular housing engageable with said lock ring;
- a plurality of spring-loaded pistons in said housing that are urged inwardly from the inner circumference of said housing towards its center;
- and
- means for controllably urging said pistons in a direction outwardly from the inner perimeter of said housing.
Dependencies are inferred from the claim text.