Horology: time measuring systems or devices – Power supply details – Electrical
Reexamination Certificate
2005-11-29
2005-11-29
Gibson, Randy (Department: 2841)
Horology: time measuring systems or devices
Power supply details
Electrical
C368S088000, C368S276000
Reexamination Certificate
active
06970399
ABSTRACT:
A thermoelectric power generating timepiece (1) comprises a dial (30), a movement (40), and a heat conduction sheet (50), provided within an enclosed space, defined by a case (10) made of metal, with a glass (20) fixedly attached thereto, and a case back (70), and further comprises a thermoelectric element (60), housed in a gap between the heat conduction sheet (50) and the case back (70). The case back70is made of two kinds of materials each having a thermal conductivity differing from that of the other. The case back (70) is made up of a heat conducting part (71) made of material, such as metal, and the like, having a high thermal conductivity, and formed in a shape larger in outer size than the thermoelectric element (60), so as to be disposed opposite to the thermoelectric element (60), and a heat insulating part (72) made of material having a low thermal conductivity such as plastics, and the like, and formed so as to be disposed on the outside of the heat conducting part (71).
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Murakami Atsushi
Sakamaki Yumiko
Watanabe Shigeru
Citizen Watch Co. Ltd.
Gibson Randy
Goodwin Jeanne-Marguerite
Westerman Hattori Daniels & Adrian LLP
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