×

COLORIMETRIC TEMPERATURE SENSOR

  • US 3,651,695 A
  • Filed: 04/24/1970
  • Issued: 03/28/1972
  • Est. Priority Date: 04/24/1970
  • Status: Expired due to Term
First Claim
Patent Images

1. A chromatic temperature indicator for monitoring the temperature of fluid in a fluid conduit over a predetermined temperature range comprising:

  • a layer of colorimetric cholesteric material carried by and in thermal contact with the conduit and having a maximum color-changing temperature range corresponding substantially to the predetermined range, and a protective layer of substantially clear, nonpermeable material over the cholesteric material layer, the protective layer being disposed in a continuous band about the conduit and being formed of a heat-shrinkable plastic.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×