Title:
LOAD CELL
Document Type and Number:
WIPO Patent Application WO/1992/005416
Kind Code:
A1
Abstract:
A load cell, which is used for a weighing apparatus, of the type in which a strain gauge pattern (4) made of a copper-nickel alloy is formed on the surface of a strain generation member (1) by sputtering and is heat-treated in an oxygen-free atmosphere, the weight ratio of the copper-nickel alloy is set to a value so that the resistance-temperature coefficient of the strain gauge pattern (4) which extends and contracts integrally with the strain generation member (1) becomes substantially zero. In this way, it becomes possible to obtain a load cell having a high measuring accuracy which is not affected by the change of temperatures.
Inventors:
SUZUKI TAKAO (JP)
KONISHI HIROYUKI (JP)
UTSUNOMIYA MICHITO (JP)
KONISHI HIROYUKI (JP)
UTSUNOMIYA MICHITO (JP)
Application Number:
PCT/JP1991/001194
Publication Date:
April 02, 1992
Filing Date:
September 07, 1991
Export Citation:
Assignee:
ISHIDA SCALE MFG CO LTD (JP)
International Classes:
G01G3/14; G01L1/22; (IPC1-7): G01G3/14; G01L1/22
Foreign References:
| JPS61223524A | 1986-10-04 | |||
| JPS53142698A | 1978-12-12 | |||
| JPS5328630B2 | 1978-08-16 |
Other References:
OSAMU WATANABE, "Strain Gauge and its Applications", the Fifth Edit., 30 May 1971, NIKKAN KOGYO SHIMBUN LTD. (TOKYO), pages 78-83, 89-93.
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