초록 ▼

A temperature measuring device engageable with a surface of any contour to determine the individual temperature of each of the several portions of the surface by providing a thermal map. The map is observable and may be photographed if a record thereof is desired. The temperature measuring device ha

A temperature measuring device engageable with a surface of any contour to determine the individual temperature of each of the several portions of the surface by providing a thermal map. The map is observable and may be photographed if a record thereof is desired. The temperature measuring device has a portion engageable with the surface and conformable to the surface. The portion which engages the surface includes a coating of cholesteric material, such as microencapsulated liquid crystal material which is temperature-sensitive and light-reflecting. The device also includes a transparent fill material therewithin to transmit the thermal image or map therethrough. Thus, a thermal map or image of the surface is provided. The thermal map is observable and/or recordable through another portion of the device.

대표청구항 ▼

A temperature measuring device for measuring the temperature of a surface comprising: a flexible sheet, a coating of microencapsulated cholesteric liquid crystal material covering at least a portion of the flexible sheet, a transparent sheet, means attaching the rigid transparent sheet to the flexib

A temperature measuring device for measuring the temperature of a surface comprising: a flexible sheet, a coating of microencapsulated cholesteric liquid crystal material covering at least a portion of the flexible sheet, a transparent sheet, means attaching the rigid transparent sheet to the flexible sheet to form a cavity therebetween, a transparent fill material filling the cavity between the flexible sheet and the transparent sheet, the transparent fill material being one in which adjacent portions thereof are relatively movable, the flexible sheet being engageable with a surface and conformable to the contour of the surface for transmission of thermal energy from the surface to the coating, each portion of the coating reflecting light energy in accordance with the temperature thereof and thus providing a thermal image of the surface, the thermal image being observable through the transparent sheet and through the transparent fill material, the composition of the coating comprising: (a) a polymeric, film-forming binder material and (b) microcapsules having transparent wall material, and having core material consisting essentially of about 55 to about 75% of cholesteryl pelargonate, about 14 to about 35% of oleyl cholesteryl carbonate, about 2.0 to about 6.0% of cholesteryl propionate and about 4.5 to about 7.2% of cholesteryl chloride.