Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1994-10-21
1998-06-02
Snow, Walter E.
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
324156, G01P 3481
Patent
active
057605742
ABSTRACT:
An engine revolution counter comprising a mount 2 having first electric source terminals 20 for supply of electric power from outside and first measuring mode setting terminals 21 through 23, and a measuring part main body 1 provided on said mount in freely attachable and detachable way and having measuring mode setting switches and a display panel 11 on the front face thereof to display measured results and also having a measuring function of the number of revolution of the engine, wherein the first electric source terminals 20 and the first measuring mode setting terminals 21 through 23 are connected to each of second electric source terminals 16 and second measuring mode setting terminals 17 through 19 provided in said measuring part main body 1.
REFERENCES:
patent: 3383587 (1968-05-01), Tripp
patent: 3835382 (1974-09-01), Weisbart
patent: 5091695 (1992-02-01), Shaland
patent: 5177432 (1993-01-01), Waterhouse et al.
Take Shigeo
Watanabe Hiromi
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