Title:
THERMOELEMENT
Document Type and Number:
WIPO Patent Application WO/2008/035393
Kind Code:
A1
Abstract:
It is intended to provide a thermoelement in which the heat conductance of a wax
as an expanding matter is improved and a diaphragm is also improved and which has
a simple structure and a high durability and shows a good response. The heat conductance
of a wax employed as an expanding matter is improved by blending the wax with metal
pieces such as a metal powder or a metal foil and a low-melting alloy having a melting
point higher than the melting point of the wax to thereby improve the response.
Further, a piston-insertion hole is formed at the center of a thick sealing material
and the part located between the piston-insertion hole and the sealing part provided
in the outer periphery is employed as a thick wall part having a large thickness,
thereby forming an easily deformable thick wall part. Thus, the thick sealing
material has the function of a diaphragm in an existing thermoelement as well
as the function of a gummy fluid. Owing to this constitution, it is unnecessary
to use a gummy fluid, a rubber piston or a protecting plate, which makes it possible
to give a thermoelement being made up of a smaller number of parts, having a simple
structure, being free from the leakage of a gummy fluid and having a high durability.
Inventors:
ONISHI YUKIO (JP)
Application Number:
PCT/JP2006/318484
Publication Date:
March 27, 2008
Filing Date:
September 19, 2006
Export Citation:
Assignee:
ONISHI YUKIO (JP)
International Classes:
G12B1/04; G01K5/32; G01K5/44
Foreign References:
| JPH0798390A | 1995-04-11 | |||
| JPH01182685A | 1989-07-20 | |||
| JPS55145330U | 1980-10-18 |
Attorney, Agent or Firm:
KUMAKURA, Yoshio et al. (Shin-Tokyo Bldg. 3-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 55, JP)
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