Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Nonquantitative
Patent
1990-01-18
1994-06-07
Weider, Kenneth A.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Nonquantitative
324114, 324145, G08B 2100, G08B 2300
Patent
active
053193067
ABSTRACT:
A compact, hand-held electrical line tester includes a normally-open relay switch which is closed by connection of its relay portion to a line of a predetermined voltage level, and a piezoelectric tone generator, connected in series with the relay switch and a battery, which emits an audible sound to indicate that the tested line is electrified with the predetermined voltage level. The tester circuit can include a plurality of relay switches and/or tone generators for emitting different sounds in response to different line voltages, so that the user can determine the line voltage(s) without having to check a light indicator or read a dial.
REFERENCES:
patent: 3531790 (1970-09-01), Staley
patent: 3533064 (1970-10-01), Perelman
patent: 3930246 (1975-12-01), Campbell
patent: 3962630 (1976-06-01), Chaffee
patent: 4004223 (1977-01-01), Cohen
patent: 4074244 (1978-02-01), Balderson
patent: 4284944 (1981-08-01), Iwanaga et al.
patent: 4713653 (1987-12-01), McDermott
patent: 4725772 (1988-02-01), Peak
patent: 4736197 (1988-04-01), Buyak et al.
patent: 4814933 (1989-03-01), Filter et al.
patent: 4947110 (1990-08-01), Laass
Solis Jose M.
Sommer Evelyn M.
Weider Kenneth A.
LandOfFree
Portable electrical line tester using audible tones to indicate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Portable electrical line tester using audible tones to indicate , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable electrical line tester using audible tones to indicate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-795416