Electrical capacitance instrument and manufacturing method of th

Details Electrical capacitance instrument and manufacturing method of th Electrical capacitance instrument and manufacturing method of th

1994-04-22

1995-12-26

Cuchlinski, Jr., William A.

Geometrical instruments

Distance measuring

Opposed contacts

295921, G01B 320, G01B 502

Patent

active

054776210

ABSTRACT:
An electrical capacitance instrument achieving high-volume production and a manufacturing method for the same. In a slide caliper detecting a change of electrical capacitance upon a displacement value of the slider 10 in relation to the base scale 1 having the main scale 20 of the measuring standard, the improved slide caliper is structured by the main scale 20 defined by plural electrodes 21 printed on a surface of the base plate 22 made of an insulator film at predetermined intervals with electrically conductive ink, and the base scale 1 is made by injection molding using a material of engineering plastics on which the main scale 20 is applied securely, so that the slide caliper can be manufactured in large numbers.

REFERENCES:
patent: 4586260 (1986-05-01), Baxter et al.
patent: 4612656 (1986-09-01), Suzuki et al.
patent: 5083383 (1992-01-01), Heger
D. R. Dobson, et al.; "Position Encoder;" IBM Technical Disclosure Bulletin vol. 21, No. 1, Jun. 1978.
Von Kurt Hauser; Messschieber (Schieblehren); Technische Rundschau, vol. 73, No. 23, 2 Jun. 1981.

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