Pipe having temperature display chips that change color

Details Pipe having temperature display chips that change color Pipe having temperature display chips that change color

1994-06-28

1995-05-16

Bryant, III, James E.

Pipes and tubular conduits

Combined

With indicating means

138103, 374147, F16L 5500

Patent

active

054152038

ABSTRACT:
A pipe, which includes a plurality of transparent sections and a plurality of opaque sections alternatively connected in series, the opaque sections being made in multiple colors, the transparent sections having temperature display chips which change color when the inside temperature of the pipe is changed over a fixed range.

REFERENCES:
patent: 2099126 (1937-11-01), Larsen
patent: 2181035 (1939-11-01), White
patent: 3881181 (1975-04-01), Khajezadeh
patent: 4743120 (1988-05-01), Bowen
patent: 4773767 (1988-09-01), Coll
patent: 5172860 (1992-12-01), Yuch
patent: 5228478 (1993-07-01), Kleisle
patent: 5265959 (1993-11-01), Meltzer
patent: 5320137 (1994-06-01), Huang

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