Crafon Medical Ab

Landskrona Finans Ab

Bo H Hakanson

Henning Lyngberg

Incontinence electric stimulator

Methods for producing thermistors having predetermined resistance values at predetermined temperatures are disclosed. The methods include providing a sheet of electrically non-conductive material, applying a layer of electrically conductive material to the sheet in a repeating, spaced pattern so as to produce a number of electrically conductive material portions and at least one space between them, applying a layer of thermistor material to that space in order to bridge the pairs of electrically conductive material portions and produce at least one thermistor strip having a substantially constant resistance value along its length, measuring the resistance of the thermistor strip between the pairs of electrically conductive material portions, determining from the measured resistance value the length of the thermistor strip required to produce a thermistor having the predetermined resistance value at the predetermined temperature, and producing a plurality of thermistors from the thermistor strip by transversely dividing the strip in accordance with the required lengths. In addition, thermistors produced by this method are also disclosed, as are thermometers which include these thermistors.

Thermistors, their method of production

Methods for adjusting the resistance of temperature measuring sensors are disclosed, including measuring the resistance for a first heat-sensitive portion of the sensor at a first predetermined temperature, measuring the resistance for a second heat-sensitive portion of the temperature measuring sensor at a second predetermined temperature, determining the overall resistance for the temperature measuring sensor from these measured values, and adjusting the resistance of the second heat-sensitive portion so that the overall resistance for the temperature measuring sensor substantially corresponds to the predetermined resistance value. Temperature measuring sensors are also disclosed, including an electrically non-conductive base, first and second heat-sensitive materials applied to first and second portions of the electrically non-conductive base, the second heat-sensitive material being substantially less sensitive to variations in temperature than the first heat-sensitive material, and an electrical contact portion applied to the electrically non-conductive base, so that the first and second heat-sensitive portions are in substantial juxtaposition with each other, with the electrical contact portion therebetween.

Growing community of inventors

Lund, Sweden

Bo H Hakanson