US 10,379,055 B2Granted

Gas detector tube template and methods of reading gas detector tubes

AssigneeNextteq LLC

InventorBryan I. Truex

Life of this patent

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Abstract

Gas detector tube templates are described. Gas detector tubes may be used to determine the concentration of target gases in a sampled gas either visually or electronically. Gas detector tubes for visual reading have the length-of-stain demarcations printed or etched on the transparent tube. However, the demarcations may interfere with electronic reading of gas detector tubes. Embodiments of a gas detector tube template may be used to accurately and reliably read gas detector tubes that do not have concentration demarcations printed on the tube in the working area adjacent to the chemical reagent. The gas detector tube template may have a gas detector tube holder capable of reversibly receiving a gas detector tube and two scale card holders. The gas detector tube template could have a left and right scale holder hingedly connected to the gas detector tube holder. The gas detector tube template may be used with scale cards capable of being, reversibly received in the scale rockets.

Claims15

Dependent claims

A gas detector tube template, comprising:

a gas detector tube holder capable of reversibly receiving a gas detector tube;
and
a left scale holder hingedly connected to a left side of the gas detector tube holder, wherein the left scale holder comprises a left scale pocket;
a right scale holder hingedly connected to a right side of the gas detector tube holder, wherein the right scale holder comprises a right scale pocket;
a right scale card capable of being reversibly received in the right scale pocket, wherein the right scale card comprises a first set of demarcations for interpreting a length-of-stain for a target compound in the gas detector tube on the front side of the right scale card and a second set of demarcations for interpreting a length-of-stain for a target compound in the gas detector tube on the back side of the right scale card, wherein the first set of demarcations is different than the second set of demarcations;
and
a left scale card capable of being reversibly received in left scale pocket, wherein the left scale card comprises the first set of demarcations front side of the left scale card and the second set of demarcations on the back side of the left scale card.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/062,891Filed 7 Mar 2016 · us provisional application
Priority: 5 Mar 2015
Published: US 2016/0258874 A18 Sep 2016
Granted: 13 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G01N 21/783
Producing a change of colour: for analysing gases
G01N 21/293
Using visual detection: with colour charts, graduated scales or turrets
G01N 2021/7756
By observing the effect on a chemical indicator: sensor type
G01N
Investigating or analysing materials by determining their chemical or physical properties