Infrared temperature wave guide device
First Claim
1. An infrared temperature sensing apparatus comprising:
- (a) a housing having an axially extended base portion defining an inner space, said housing having formed externally thereon a plurality of annular retaining steps axially offset one from the others;
(b) a wave guide tube projecting coaxially from said housing, said wave guide tube including a transparent cover disposed at an outer free end thereof;
(c) a temperature sensing device disposed in said inner space of said housing; and
, (d) a rear cap adjustably coupled to said housing for substantially enclosing said inner space, said rear cap having a rear end portion and a plurality of resilient retaining columns extending transversely therefrom to releasably engage a selective one of said retaining steps;
each of said housing, wave guide, and rear cap being formed of a plastic material having a metallic surface layer.
1 Assignment
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Accused Products
Abstract
An infrared temperature wave guide device that is adapted for use in all kinds of precision detecting and temperature sensing apparatus directed to apply in a contact or non-contact manner measuring, control, recording, monitoring, and inspecting on a temperature source to be measured, the structure including a wave guide tube, a housing accommodating a thermopile, a thermistor, and a circuit board, and a rear cap for securing purposes. A front end of the wave guide tube is provided with a cover to prevent entry of dusts. The housing and rear cap are formed from plastic material. The connection of the housing and the rear cap is suitably adjustable to allow mounting of different thermopiles. The structure as a whole is durable, light and compact, and has longer service life, preferred anti-oxidization capability. Besides, it ensures stable quality during mass production and is easy to process.
27 Citations
12 Claims
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1. An infrared temperature sensing apparatus comprising:
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(a) a housing having an axially extended base portion defining an inner space, said housing having formed externally thereon a plurality of annular retaining steps axially offset one from the others;
(b) a wave guide tube projecting coaxially from said housing, said wave guide tube including a transparent cover disposed at an outer free end thereof;
(c) a temperature sensing device disposed in said inner space of said housing; and
,(d) a rear cap adjustably coupled to said housing for substantially enclosing said inner space, said rear cap having a rear end portion and a plurality of resilient retaining columns extending transversely therefrom to releasably engage a selective one of said retaining steps;
each of said housing, wave guide, and rear cap being formed of a plastic material having a metallic surface layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification