Heating probe having a heated tip forming a thermocouple

Details Heating probe having a heated tip forming a thermocouple Heating probe having a heated tip forming a thermocouple

1993-07-29

1995-04-11

Reynolds, Bruce A.

Electric heating

Heating devices

Tool or instrument

219229, H05B 100, H05B 302

Patent

active

054060532

ABSTRACT:
A heated probe and sensor tip incorporating a thermocouple located near the distal end of the probe. Improved temperature monitoring and control are achieved through placement of a thermocouple at or near the heating surface. In one embodiment of the device, the heating tip surface forms one half of a thermocouple junction. In another embodiment, a spiral resistive ribbon is formed integrally with the tip and comprises a resistive heating element. In an alternative embodiment of the device, a replaceable tip is described. A method for producing the device is also described. The thermocouple is preferably formed by the junction between the heating tip and a heating wire that surrounds the tip. The tip is preferably mounted in an insulative body which is, in turn, mounted at the distal end of a conductive support tube. Power is then delivered to the heating wire through the support tube and a lead connected to the heating tip. The electrically conducted support tube and a proximal portion of the heating tip are preferably enclosed by an outer tube having an end wall that contacts the heating tip so that the distal end of the heating tip projects beyond the end wall.

REFERENCES:
patent: 433671 (1890-08-01), Carpenter
patent: 1293320 (1919-02-01), Braun
patent: 1589843 (1926-06-01), De Lisle
patent: 2717952 (1955-09-01), Dvorak
patent: 2747074 (1956-05-01), Finch
patent: 2897335 (1959-07-01), Finch
patent: 3141087 (1964-07-01), Schoenwald
patent: 3654427 (1972-04-01), Schoenwald
patent: 4527560 (1985-07-01), Masreliez
patent: 4822979 (1989-04-01), deKam
patent: 5043560 (1991-08-01), Masreliez
patent: 5122637 (1992-06-01), Bottorff et al.

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