초록 ▼

A window seal apparatus capable of transmitting infrared radiation for use under high temperature ultra-high vacuum conditions. The apparatus includes a window clamped between an annular rim of a clamp flange and an annular rim of a sealing flange. The rim of the sealing flange includes an annular s

A window seal apparatus capable of transmitting infrared radiation for use under high temperature ultra-high vacuum conditions. The apparatus includes a window clamped between an annular rim of a clamp flange and an annular rim of a sealing flange. The rim of the sealing flange includes an annular sealing knob machined therein having an annular indentation in its upper surface. An annular lead gasket is located between the sealing knob and one side of the window. An annular lead gasket having roughened surfaces is positioned adjacent to the other side of the window and a TEFLON gasket is positioned adjacent to the annular rim of the clamp flange. A constant force means is provided for pushing the clamp flange toward the window and the sealing flange thereby producing a seal therebetween. The window is preferably formed from alkali halide material.

대표청구항 ▼

A temperature cyclable sealing structure for use under high temperature, high vacuum conditions, comprising: a sealing flange member coupled with an aperture in a body and sealed thereto, said sealing flange including a continuous annular rim, said annular rim of said sealing flange including a rais

A temperature cyclable sealing structure for use under high temperature, high vacuum conditions, comprising: a sealing flange member coupled with an aperture in a body and sealed thereto, said sealing flange including a continuous annular rim, said annular rim of said sealing flange including a raised continuous annular sealing knob, said sealing knob including a continuous annular indentation in its upper surface; a panel member including a first face coupled to said annular rim of said sealing flange; a clamp flange member including a continuous annular rim, said annular rim of said clamp flange being coupled to a second face of said panel member; sealing means located between said annular rim of said sealing flange and said first face of said panel member for sealing said first face to said annular rim, said sealing means being positioned such that a portion of said sealing means is located between said first face of said panel member and portions of said sealing knob on each side on said indentation; pressure distribution means located between said annular rim of said clamp flange and said second face of said panel member for distributing forces applied by said annular rim of said clamp flange to said second face; and constant force means for pushing said clamp flange toward said sealing flange with approximately constant force over a wide temperature range thereby maintaining a high vacuum seal between said panel member and said sealing flange over a wide range of temperatures.