Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Oxygen concentration detector
T983005 Oxygen concentration detector
Patent Drawings:Drawing: T983005-2    Drawing: T983005-3    
« 1 »

(2 images)

Inventor: Akiyama, et al.
Date Issued: June 5, 1979
Application: 05/890,904
Filed: March 27, 1978
Inventors: Akiyama; Yoshinori (Kariya, JP)
Ouki; Masami (Nagoya, JP)
Suzuki; Masatosi (Kariya, JP)
Assignee: Nippondenso Co. Ltd. (Kariya, JP)
Primary Examiner:
Assistant Examiner:
Attorney Or Agent:
U.S. Class: 204/428
Field Of Search:
International Class:
U.S Patent Documents:
Foreign Patent Documents:
Other References:









Abstract: an improved oxygen concentration detector is described having an oxygen concentration sensor which produces an electromotive force in accordance with a difference between an oxygen concentration in the gas components of a gas under test and an oxygen concentration in a reference gas, and first and second electrodes formed on the gas-under-test side and the reference gas side, respectively, of the oxygen concentration sensor, so that the electromotive force produced by the oxygen concentration sensor is taken across the two electrodes, in which the improvement comprises a first protective member arranged to cover the first electrode on the oxygen concentration sensor and having a number of pores through which the gas under test can pass, and a second protective member arranged between the first electrode and the first protective member also having a number of pores through which the gas under test can pass. The first and second protective members are spaced apart from each other to form a gap between them and the pores of the first protective member and the pores of the second protective member are arranged in a staggered relationship to each other.The pores of the first protective member may have a louvered shape or the pores of the two protective members may partially overlap each other. The pore sizes for both of the protective members are preferably in the range of 0.5 mm to 3.0 mm.The detector assembly is effective in reducing the flow rate of the gas under test within the exposed detector so that the underlying electrode is not substantially peeled off.
Claim:
Description:
 
 
  Recently Added Patents
Apparatus and method for connection control with media negotiation successful on different media formats
Plants and seeds of hybrid corn variety CH979678
Power-saving receiver
Voltage regulator structure that is operationally stable for both low and high capacitive loads
Manufacturing method for semiconductor device carrier and semiconductor package using the same
Case of electronic device having antenna pattern embedded therein and mold and method for manufacturing the same
Radio transmitter and radio receiver with channel condition assessment
  Randomly Featured Patents
Electro-optical panel, electro-optical device, driving method of electro-optical device
Open-close means for a fill opening of a fuel tank of a vehicle, and a fuel filling method using the open-close means
Modular system for stimulation and exfoliation of human back skin
Soybean cultivar 06JR207629
Selective photocoagulation
Heat exchanger, exhaust gas recirculation system, and use of a heat exchanger
Enhanced performance vacuum cleaner bag and method of operation
System for control of read/write on magnetic tape
Fabricating automotive spaceframes using electromagnetic forming or magnetic pulse welding
Multiaccess circuit including arbitration capabilities to effectively perform pipeline and suspend operations according to its priority