Digestion and sterilization methods and apparatus
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A23L-003/00
A23L-003/26
F16K-015/14
출원번호
US-0185250
(1988-04-19)
발명자
/ 주소
Floyd Terry S. (Clover SC) Hargett
Jr. Wyatt P. (Matthews NC)
출원인 / 주소
CEM Corporation (Matthews NC 02)
인용정보
피인용 횟수 :
21인용 특허 :
10
초록▼
A valve that opens and closes in response to changes in the physical environment of the valve. This valve is particularly suited as a relief valve in a microwave system-based, closed vessel digestion procedure. This valve includes a pressure-deformable, resilient wall member having a fluid vent port
A valve that opens and closes in response to changes in the physical environment of the valve. This valve is particularly suited as a relief valve in a microwave system-based, closed vessel digestion procedure. This valve includes a pressure-deformable, resilient wall member having a fluid vent port, and an obstructing member that cooperates with the wall member to open and close the valve. Also provided is a lidded vessel employing this improved valve, an apparatus that includes a microwave system and this lidded vessel, and methods using this improved valve.
대표청구항▼
Digestion or sterilization apparatus which comprises a microwave system comprising a microwave heating means, and a lidded vessel comprising a container and a self-opening and self-closing temperaturesensitive valve assembly, said valve assembly being made entirely of microwave radiation transparent
Digestion or sterilization apparatus which comprises a microwave system comprising a microwave heating means, and a lidded vessel comprising a container and a self-opening and self-closing temperaturesensitive valve assembly, said valve assembly being made entirely of microwave radiation transparent, thermoplastic material, and said valve assembly comprising a temperaturesensitive, pressure-deformable, resilient wall member located for direct contact with a hot gas when said lidded vessel is closed, said wall member having an outlet port, and obstructing means normally engaged to block outflow through said outlet port such that said lidded vessel is closed, said wall member being only dome-shaped or planar; wherein said valve assembly is structured so that internal fluid pressure impinging on said wall member, causes outward bulging of said wall member, the pressure-deformed wall member being domeshaped, wherein outflow through said outlet port occurs in response to a certain internal fluid pressure impinging on and deforming said wall member; and wherein said valve assembly lacks a coil spring member. A high pressure, closed vessel digestion method comprising (a) introducing sample to be digested, and an amount of a digesting agent suitable for effecting digestion into a thermoplastic container capable of withstanding high internal pressure; (b) placing onto said container, a self-opening and self-closing temperature-sensitive valve assembly, said valve assembly being made entirely of microwave radiation transparent, thermoplastic material, and said valve assembly comprising a temperature-sensitive, pressure-deformable, resilient wall member located for direct contact with a hot gas when said lidded vessel is closed, said wall member having an outlet port, and obstructing means normally engaged to block outflow through said outlet port such that said container is closed, said wall member being only dome-shaped or planar; wherein said valve assembly is structured so that internal fluid pressure impinging on said wall member, causes outward bulging of said wall member, the pressure-deformed wall member being dome-shaped, wherein outflow through said outlet port occurs in response to a certain high internal fluid pressure impinging on and deforming said wall member; and wherein said valve assembly lacks a coil spring member; (c) digesting said sample by applying microwave energy to the contents of the closed container, wherein a high internal fluid pressure is produced that causes outward bulging of said wall member yet said valve assembly remains closed, said high internal fluid pressure being less than said certain high internal fluid pressure; and (d) recovering the digested sample from said container.
Beauvais Max P. (46 Southridge West Tiburon CA 94920) Camezon Raymond E. (623 Tunbridge Rd. Danville CA 94526), Method of microwave sterilizing canned food.
Roggenburg ; Jr. Stanley L. (Staten Island NY), Squeeze bottle self-closing viscous liquid dispensing valve having manually operated positive shut-off.
Manganini, Steven J.; Doherty, Kenneth W.; Hammer, Terence R.; Lancaster, Bruce A., Sequential processing reaction vessel for chemical fractionation and analysis.
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