US 2019/0316974 A1Published application

Temperature sensor

AssigneeDenso Corporation

Inventorsltsuhei Ogata, Mitsuhiro Konno, Chiaki Ogawa, Yasuhiro Oya

Life of this patent

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Abstract

A temperature sensor includes a metal tube having an opening tip portion, a temperature sensing element for measuring a temperature, a pair of lead wires contacting with a surface of the temperature sensing element, an insulating support material for insulating the pair of lead wires from the metal tube, and a coating material for covering the temperature sensing element, lead tip portions of the pair of lead wires, and a tip surface of the insulating support material at the opening tip portion of the metal tube. The coating material has a property of not allowing measurement target gas to pass through and contains oxide and at least one of platinum, platinum alloy, and platinum-containing oxide that are dispersed in the oxide.

Claims9

Dependent claims

A temperature sensor comprising:

a metal tube having an opening as an opening tip portion at a tip of the metal tube;
a temperature sensing element disposed at the opening tip portion for measuring a temperature of measurement target gas in measurement environment;
a pair of lead wires disposed in the metal tube, each including a lead tip portion containing at least one of platinum and platinum alloy and contacting a surface of the temperature sensing element;
an insulating support material disposed in the metal tube and made of ceramic for insulating the pair of lead wires from the metal tube and supporting the pair of lead wires in the metal tube;
and
a coating material disposed at the opening tip portion in a state of covering the temperature sensing element, the lead tip portion, and a tip surface of the insulating support material and having a property of not allowing measurement target gas to pass through,
wherein the coating material contains oxide and at least one of platinum, platinum alloy, and platinum-containing oxide containing platinum that are dispersed in the oxide.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/381,043Filed 11 Apr 2019
Priority: JP 2018-07713012 Apr 2018
Published: 17 Oct 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G01K 7/22
Using resistive elements: the element being a non-linear resistance, e.g. thermistor
G01K 1/10
Protective devices, e.g. casings: for preventing chemical attack
G01K 1/18
Special arrangements for conducting heat from the object to the sensitive element: for reducing thermal inertia
G01K 13/00
Thermometers specially adapted for specific purposes

Family

US 11,274,974 B2Related patent
US 2019/0316974 A1This patent

From the US filing history. Foreign family members aren’t listed.

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