Amusement devices: toys – Operated by intrinsic temperature change
Patent
1993-08-18
1994-05-31
Muir, D. Neal
Amusement devices: toys
Operated by intrinsic temperature change
446484, 446219, A63H 3300, A63H 2922, A63H 3322
Patent
active
053165136
ABSTRACT:
There is disclosed an electrothermal color-varying device inducing color change in a thermally color-varying layer by heat generation in an electrothermal heat-generating member, in which the heat-generating member is composed of a non-metallic member having a positive temperature coefficient on the electric resistance at least in a temperature range 25.degree. C. to 65.degree. C. and a particular volume resistivity, is adapted to generate heat by the application of a low voltage and is capable of self-control of the saturated heating temperature at an arbitrary temperature within a range of 25.degree. C. to 65.degree. C., whereby improved safety is achieved without the danger of overheating or current leakage. Also there are disclosed toys utilizing such color-varying device.
REFERENCES:
patent: 1592148 (1926-07-01), Munn
patent: 4028118 (1977-06-01), Nakasuji et al.
patent: 4176273 (1979-11-01), Fujie
patent: 4305223 (1981-12-01), Ho
patent: 4384989 (1983-05-01), Kamgaito et al.
patent: 4421560 (1983-12-01), Kito et al.
patent: 4720301 (1988-01-01), Kito et al.
patent: 4725462 (1988-02-01), Kimura
patent: 4818215 (1989-04-01), Taga
patent: 4917643 (1990-04-01), Hippely
patent: 4920991 (1990-05-01), Shibahashi et al.
patent: 5011445 (1991-04-01), Nakasuji et al.
patent: 5079049 (1992-01-01), Kito et al.
patent: 5085607 (1992-02-01), Shibahashi et al.
patent: 5139454 (1992-08-01), Earnest
Aoyama Kyoji
Nakagawa Tanehiro
Ono Yoshiaki
Tanaka Toshiaki
Tomatsu Tsutomu
Muir D. Neal
The Pilot Ink Co., Ltd.
LandOfFree
Electrothermal color-varying device and toy utilizing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrothermal color-varying device and toy utilizing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrothermal color-varying device and toy utilizing the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1625241