Heat pipe roller with temperature sensor

US5245160A · kind A · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Helmut Quabeck · Babenhausen, DE
• Martin Hughes · Leicester, GB

Key dates

• Filing date: Jul 15, 1992
• Grant date: Sep 14, 1993
• Expiry date: Jul 15, 2012

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05B3/0038
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A heat pipe roller includes a rotatable outer tube having a primary internal chamber for containing a fluid, a heater operable to heat the fluid and hence the tube, and a sensor. The sensor has a movable member which communicates with the primary chamber and is mounted on the tube for rotation therewith, and a fixed member situated in the region of the axis of rotation of the tube and so mounted relative to the tube that rotation of the tube does not rotate the fixed member. The fixed member is adapted to be connected to equipment for measuring an electrical characteristic of the sensor. The arrangement is such that, in use, the movable member moves in response to a temperature change or temperature related physical change in the primary chamber, thereby causing a corresponding change in the electrical characteristic of the sensor.