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A pair of resilient side-by-side elongated coils of different thermocouple material are mounted in a ceramic housing and project forwardly with their forward ends connected to form a thermocouple junction that is adapted to be pressed against a surface of which temperature is to be measured. A retra

A pair of resilient side-by-side elongated coils of different thermocouple material are mounted in a ceramic housing and project forwardly with their forward ends connected to form a thermocouple junction that is adapted to be pressed against a surface of which temperature is to be measured. A retractable protective sleeve is spring-urged to a forward position in which it extends beyond the end of the thermocouple housing and is retractable, when the probe is pressed against the surface, to a limit position in which the end of the ceramic thermocouple housing is maintained just clear of the surface, while the resilience of the thermocouple coils enables good contact of the junction and the surface.

대표청구항 ▼

A portable heat sensing surface probe comprising a connector body adapted to be connected to a probe handle, a thermocouple housing having a rearward end mounted in said body and having a forward end, a thermocouple sensor mounted in said housing and projecting forwardly of said forward end, a prote

A portable heat sensing surface probe comprising a connector body adapted to be connected to a probe handle, a thermocouple housing having a rearward end mounted in said body and having a forward end, a thermocouple sensor mounted in said housing and projecting forwardly of said forward end, a protective sleeve circumscribing said forward end and said projecting sensor, said sleeve being slidably mounted on said connector body for motion between a forward position in which a forward end of the sleeve projects forwardly beyond the sensor to guard the sensor against inadvertent contact and a retracted position in which said sleeve forward end is retracted to allow contact of the sensor with a surface, means for urging said sleeve toward said forward position whereby said sensor is normally protected by the circumscribing and projecting sleeve in its forward position and whereby said sleeve may be readily shifted to said retracted position by pressing the probe against a surface to allow the sensor to contact the surface, and stop means for limiting motion of said sleeve to said retracted position, the forward end of said sleeve, in said retracted position being slightly forward of the forward end of said thermocouple housing, thereby to prevent contact of said thermocouple housing and surface when said thermocouple sensor contacts the surface, said sensor comprising first and second resilient coils of mutually different thermocouple material extending along and within said housing, said coils having rearward ends fixed to and within the housing and having forward ends projecting beyond the housing, said forward ends being mutually interconnected to provide a thermocouple junction that is resiliently mounted to said housing.