Contact temperature sensor

• US 5,527,111 A
• Filed: 12/10/1993
• Issued: 06/18/1996
• Est. Priority Date: 12/24/1992
• Status: Expired due to Term

• Current Assignee: PRÜFTECHNIK Dieter Busch AG (Fortive Corp.)
• Original Assignee: PRÜFTECHNIK Dieter Busch AG (Fortive Corp.)
• Inventors: Holzl, Johannes G., Lysen, Heinrich
• Primary Examiner(s): GUTIERREZ, DIEGO F
• Application Number:
  US08/165,216
• Time in Patent Office: 921 Days
• Field of Search: 374/208, 374/165, 374/179, 136/221, 136/230, 136/232, 136/233
• US Class Current: 374/208
• CPC Class Codes: G01K 1/143 for measuring surface temperatures
• CPC Class Codes: G01K 1/16 Special arrangements for conducting heat from the object to the sensitive element

Abstract

The invention provides a contact temperature sensor consisting of a planar contact plate, a thermocouple element attached to the contact plate for determining the temperature of the contact plate, and a deflectable and tiltable holding system. The connection lines to the thermocouple element are wound around a tube. By vulcanisation with a rubber-elastic material, a one-piece elastic formed body is produced which connects together the contact plate, holding piece and inner tube. Through the rubber-elastic spring action and the deflectability and tiltability of the contact plate with reference to the surface of the object of measurement, and improved flow of heat to the contact plate and improved measurement results are achieved.

Claims

1. A contact temperature sensor comprising:

a contact plate of heat conductive material;

a temperature element attached to the contact plate for detecting the temperature of the contact plate; and

,

a deflectable and tiltable holding system for placement of the contact plate flush with the surface of an object of measurement, wherein the holding system is comprised essentially of a formed holder body of rubber-elastic material for hand held manipulation of the contact plate for obtaining elastic spring action, deflectability and tiltability of the contact plate with respect to a surface of the object of measurement.

2. The contact temperature sensor according to claim 1 wherein the rubber-elastic material has thermally insulating properties.

3. The contact temperature sensor according to claim 1 wherein the rubber-elastic material is natural or artificial rubber having a Shore hardness from 20 to 90.

4. The contact temperature senor according to claim 3 wherein said rubber-elastic material is silicone rubber.

5. The contact temperature sensor according to claim 1 wherein the holding system has an inner elastic tube and at least one connection line from the temperature element coiled in contact with the inner elastic tube.

6. The contact temperature sensor according to claim 1 wherein the formed holder body of rubber-elastic material is produced in situ by vulcanization upon assembly.

7. The contact temperature sensor according to claim 1 wherein the contact plate and the formed holder body of rubber-elastic material are bound one to the other by vulcanization.

8. The contact temperature sensor according to claim 1 wherein the contact plate is of material of high heat conductivity and low heat capacity.

9. The contact temperature sensor according to claim 1 wherein the temperature element is a thermocouple element.

10. The contact temperature sensor according to claim 9 wherein the thermocouple element is a Ni--Cr--Ni material.

11. The contact temperature sensor according to claim 1 wherein the rubber-elastic material is selected from the group consisting of natural or artificial rubber having a Shore hardness from 40 to 60.

12. The contact temperature sensor according to claim 1 wherein said formed holder body has a longitudinal axis and can bend greater than 10°

relative to the axis.