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 for carrying out controlled microwave assisted chemical processes 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.
Claims5
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.