Patent ID: 6130598
Filing Date: 2000-10-10
Classification: G01K

Abstract:
A temperature detecting apparatus comprising a first metal pipe, a first metal wire and a second metal wire disposed in the first metal pipe, at least one end of the first metal wire and at least one end of the second metal wire being projected from the same end of the first metal pipe, an insulator for providing an electric insulation for the first metal wire and the second metal wire in the first metal pipe, a temperature detecting element disposed between the ends of the first metal wire and the second metal wire, said temperature detecting element surrounding said first metal wire and said second metal wire, and a metal cap coupled to one end of the first metal pipe for enclosing the temperature detecting element, wherein the temperature detecting element has an oval shape defining a first axis that intersects said first metal wire and said second metal wire, and a second axis that extends perpendicularly to said first axis, said temperature detecting element having a width taken along said first axis which is longer than the width of said temperature detecting element taken along said second axis, and a portion of the metal cap surrounding the temperature detecting element has an oval shape which conforms to the temperature detecting element, said portion of said metal cap surrounding the temperature detecting element defining a third axis that intersects said first metal wire and said second metal wire, and a fourth axis that extends perpendicularly to said third axis, said portion of said metal cap surrounding the temperature detecting element having a width taken along said third axis which is longer than the width of said portion of said metal cap taken along said fourth axis,wherein the ratio of said second axis to said first axis is less than 70 percent.