High pressure window assembly

Details High pressure window assembly High pressure window assembly

1991-01-03

1992-06-23

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

250343, 356246, G01N 2109, G01N 2105

Patent

active

051245558

ABSTRACT:
This invnetion relates to a high pressure sealed window assembly which does not result in substantial shear forces being applied to the window, and in particular to such a window assembly for transmitting ultraviolet light in high pressure chromatographic detectors. The window has opposed faces through which light is transmitted and angled surfaces extending toward each other away from corresponding points on the outer edge of the opposed surfaces. Sealing rings, preferably shaped to conform to the shape of the angled surfaces, bear against such surfaces and precompression forces are applied through the sealing rings to precompress the window, preferably over substantially its entire volume. When pressure is applied to one face of the window, the precompression forces must be overcome before such pressure can result in shear forces being developed in the window. Thus, by sufficiently precompressing the window, shear stresses can either be eliminated or reduced to a level which does not pose a danger to the window.

REFERENCES:
patent: 4872753 (1989-10-01), Danigel et al.
patent: 4997275 (1991-03-01), Gaucher et al.
patent: 5073346 (1991-12-01), Scott et al.
H. D. Stromberg and R. N. Schock, "A Window Configuration for High Pressure Optical Cells." The Review of Scientific Instruments, vol. 41, No. 12 (Dec. 1970?) pp. 1880-1881.
R. R. Gordon, M.A., Ph.D., and H. Powell, Ph.D., "Variable Path-Length Cell for the Measurement of the Absorption of Liquids in the Infra-Red Region of the Spectrum." Journal of Scientific Instruments, vol. 22 (Jan. 1945) pp. 12-14.

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