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US 7,060,949 B1Granted
End seal design for temperature sensing probes
AssigneeWatlow Electric Manufacturing Company
InventorsWayne Davis, Paul Ribich, Dan Harvey, Nawaz Kasam
Life of this patent
Estimating the term…
Abstract
An end seal for a temperature sensing probe. Electrical interface wiring is passed through a restraining element and is operatively coupled to a temperature sensing element or heater element mounted in the sheath. The sheath is formed around the restraining element in a shape that provides a net force inward as temperature variations expand and contract the restraining element.
Claims42
A temperature sensing probe, comprising:
- a sensor body defining a hot end and an opening at a cold end, said sensor body dimensioned to include a tapered section tapered from a first diameter at the opening to a larger second diameter at a distance from the opening;
- a temperature sensing element located within the sensor body adjacent the hot end;
- an electrical conductor electrically connected to the temperature sensing device and extending outward from the sensor body through the opening;
- and
- a restraining element configured to thermally expand when exposed to heat, defining a hole through which the electrical conductor passes and is restrained and positioned substantially within the tapered section, wherein the restraining element is compressed and frictionally engaged by an inner surface of the tapered section.
2 more elements
A temperature sensing probe, comprising:
- a generally tubular sensor body defining a hot end and an opening at a cold end and having a longitudinal axis, said sensor body defining a first diameter about the cold end opening and a second internal diameter at a distance along the longitudinal axis from the cold end, said second diameter being greater than the first diameter, said body defining a tapered section having a continuous taper between the first internal diameter and the second internal diameter;
- a temperature sensing element located within the sensor body adjacent the hot end;
- an electrical conductor electrically connected to the temperature sensing device and extending outward from the sensor body through the opening;
- and
- a restraining element configured to thermally expand when exposed to heat and defining a hole through which the electrical conductor passes and is restrained, wherein the restraining element is substantially positioned within the tapered section.
2 more elements
A temperature sensing probe comprising:
- a generally tubular sensor body defining a hot end and an opening at a cold end, said body defining a first section with a progressively increasing diameter beginning at a first diameter at the opening and increasing towards the hot end to a second diameter, and a second section having a decreasing diameter beginning at the second diameter at the end of the first section and decreasing to a third diameter;
- a temperature sensing element located within the sensor body adjacent the hot end;
- an electrical conductor electrically connected to the temperature sensing device and extending outward from the sensor body through the opening;
- and
- a restraining element configured from a resilient material positioned within the tubular sensor body and defining a hole through which the electrical conductor passes and is restrained, wherein the restraining element is dimensioned and positioned to have at least a substantial portion of the length of the restraining element within the first section.
2 more elements
A temperature sensing probe comprising:
- a generally tubular sensor body defining a closed hot end, a cold end, a cavity, and an opening into the cavity at the cold end, the body having a first section with a progressively increasing diameter section beginning at a first diameter at the opening and increasing to a second diameter towards the hot end, a second section having a decreasing diameter beginning at the second diameter and decreasing for a length towards the hot end to a third diameter, a third section having a substantially constant diameter about equal to the third diameter and beginning at the end of the second section, and a hot end diameter that is about equal to or greater than the second diameter that begins at a hot end of the third section;
- a first restraining element configured from a resilient material is compressed within at least the first section and defines a first conductor hole therethrough;
- a second restraining element compressed at least within the third section and defines a second conductor hole therethrough;
- a temperature sensing element positioned within the sensor body adjacent the hot end;
- and
- an electrical conductor electrically connected to the temperature sensing device and passing through the second conductor hole of the second restraining element and the first conductor hole of the first restraining element and outward of the cold end of the sensor body.
3 more elements
Dependencies are inferred from the claim text.