Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1984-01-10
1987-04-21
Corbin, John K.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 97, G02B 2610, G02B 700
Patent
active
046591800
ABSTRACT:
A metal mount of a galvanometer is secured to a plate made of an electrically conductive material via a thin insulating layer in electrically insulated relation to the plate. The thin insulating layer has a thickness within the range of about 10 .mu.m to about 500 .mu.m. The metal mount and the thin insulating layer are cylindrical and are secured to a cylindrical through hole formed in the plate. Or, the metal mount has an L-shaped cross-section. One section of the L-shaped metal mount is secured to the plate by use of bolts, and the other section thereof is secured to the galvanometer by use of screws. In this case, an insulation sheet is positioned between the one section of the L-shaped metal mount and the plate.
REFERENCES:
patent: 2503298 (1950-04-01), Richardson
patent: 2573998 (1951-11-01), Thompson
patent: 2874353 (1959-02-01), Tavis
patent: 3011124 (1961-11-01), Hermann et al.
Horikawa Kazuo
Itakura Toru
Ohara Yuji
Ben Loha
Corbin John K.
Fuji Photo Film Co. , Ltd.
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