Air gas analyzer window and a method for producing such a...

Details Air gas analyzer window and a method for producing such a... Air gas analyzer window and a method for producing such a...

2004-04-22

2009-12-08

Sample, David R (Department: 1794)

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

C428S156000, C428S064100, C600S532000, C600S538000

Reexamination Certificate

active

07629039

ABSTRACT:
A window for use in an adapter for an IR gas analyser for analysing breathing gases, where the gases flow through a through-penetrating passageway in the adapter, which includes windows disposed on opposite sides of the passageway so as to enable an IR beam to be sent through the windows and through the passageway containing said breathing gases. Each window is a one-piece structure comprised of plastic material and has a round basic shape that includes a surrounding edge and a central part which is sunken in relation to the surrounding edge and which forms the window through which the IR beams or rays shall be able to pass. A method of producing such a window, by injection moulding a thermoplastic material in a mould where injection of the plastic material is also disclosed.

REFERENCES:
patent: 5067492 (1991-11-01), Yelderman et al.
patent: 5693944 (1997-12-01), Rich
patent: 6216692 (2001-04-01), Todokoro et al.
patent: 6806100 (2004-10-01), Xu et al.
Patent Abstracts of Japan vol. 011, No. 114 Apr. 10, 1987 & JP 61258718 A (Matsushita Electric IND Co Ltd), Nov. 17, 1986 abstract.

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