Spectroscopy cell

Optics: measuring and testing – Sample – specimen – or standard holder or support – Fluid containers

Reexamination Certificate

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Details

C356S244000, C356S440000

Reexamination Certificate

active

11032229

ABSTRACT:
A spectroscopy cell has a body with a central outer sample chamber (6). Within this chamber (6) is a sample cavity (25) as part of a temperature controlled sample probe (23). At one end this sample cavity (25) is delimited by a movable gas connection insert (20) which extends outwardly to a temperature-controlled (e.g. cooled) end plate (8). Gas inlet and outlet tubes (29,30) also extend from the end plate to the sample cavity (25). In use the sample cavity (25) may be at a high temperature so that (a) it is difficult to provide seals for the gas connection insert (20) and gas tubes (29,30); and (b) they are subject to considerable thermal expansion and contraction. Similar problems occur with very low cavity temperatures. Therefore compressible seals (21,31,32) are provided in the end plate (8), remote from the chamber.

REFERENCES:
patent: 4420690 (1983-12-01), Kuehl
patent: 4587835 (1986-05-01), Adams
patent: 4674876 (1987-06-01), Rossiter
patent: 2 154 758 (1985-09-01), None

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