Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
125 words
An element for detecting insanitary gas vapor comprising a cylinder made of an alumina ceramic material and provided with a heater extending through the interior thereof, a gas detecting semiconductor and a temperature compensating semiconductor both made of the same metal oxides and fixedly provided by sintering around the outer peripheral surface of said cylinder in adjacent relation to each other, lead members connected to said semiconductors respectively, a common lead member connected to both of said semiconductors, and glass sealing members covering and hermetically sealing the opposite open ends of said cylinder and said temperature compensating semiconductor so as to produce variation in the ratio of resistance value between said gas detecting semiconductor exposed to the atmosphere and said hermetically sealed temperature compensating semiconductor.
Claim 2
Dependent Claim
125 words
An element for detecting insanitary gas vapor comprising a cylinder made of an alumina ceramic material and provided with a heater extending through the interior thereof, a gas detecting semiconductor and a temperature compensating semiconductor both made of the same metal oxides and fixedly provided by sintering around the outer peripheral surface of said cylinder in adjacent relation to each other, lead members connected to said semiconductors respectively, a common lead member connected to both of said semiconductors, and glass sealing members covering and hermetically sealing the opposite open ends of said cylinder and said temperature compensating semiconductor so as to produce variation in the ratio of resistance value between said gas detecting semiconductor exposed to the atmosphere and said hermetically sealed temperature compensating semiconductor.
Claim 3
Dependent Claim
78 words
An assembly for detecting insanitary gas vapor comprising said element for detecting insanitary gas vapor as set forth in claim 1, an insulating base, a row of terminals fixedly extending through said insulating base and connected to the lead members of the gas detecting semiconductor and the temperature compensating semiconductor of said detecting element and to the lead members of said heater respectively, and an explosion-proof reticulate cylinder detachably fixed to said base for covering said detecting element.
Claim 4
Dependent Claim
105 words
A meter for measuring the concentration of insanitary gas vapor comprising said assembly for detecting insanitary gas vapor as set forth in claim 2, an auxiliary variable resistor and an auxiliary resistor for forming a bridge circuit connected to the terminals of the gas detecting semiconductor and the temperature compensating semiconductor of said detecting assembly, a potentiometer connected to the neutral points of said bridge circuit by way of a range changeable resistor and provided with a scale for indicating the concentration of the gas vapor, and a power source connected across the input terminals of said bridge circuit and the terminals of said heater.
Claim 5
Dependent Claim
47 words
A device for recording the concentration of insanitary gas vapor equipped with alarm means comprising said meter for measuring the concentration of insanitary gas vapor as set forth in claim 3 and means for automatically recording potential difference and alarm means connected in parallel with said potentiometer.
Claim 6
Dependent Claim
31 words
The element for detecting insanitary gas vapor as set forth in claim 1 wherein said metal oxide semiconductors are made of vanadium pentoxide-V2O5, zinc oxide - ZnO and silver oxide -Ag2O.
Claim 7
Dependent Claim
33 words
The element for detecting insanitary gas vapor as set forth in claim 1 wherein said metal oxide semiconductors are made of vanadium pentoxide - V2O5, tin oxide - SnO2 and silver oxide -Ag2O.
Claim 8
Dependent Claim
30 words
The element for detecting insanitary gas vapor as set forth in claim 1 wherein said metal oxide semiconductors are made of zinc oxide - ZnO and tin oxide - SnO2.
Claim 9
Dependent Claim
30 words
The element for detecting insanitary gas vapor as set forth in claim 1 wherein said metal oxide semiconductors are made of zinc oxide - ZnO and calcium oxide - CaO.
Claim 10
Dependent Claim
30 words
The element for detecting insanitary gas vapor as set forth in claim 1 wherein said metal oxide semiconductors are made of tine oxide - SnO2 and calcium oxide - CaO.
Claim 11
Dependent Claim
52 words
The element for detecting insanitary gas vapor as set forth in claim 1 wherein said metal oxide semiconductors are made of vanadium pentoxide - V2O5, zinc oxide - ZnO and silver oxide -Ag2O in the ratio of 10 - 5 : 95 - 87 : 0.5 - 3 in percent by weight.