Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1997-05-15
1999-09-14
Martin, David
Electricity: motive power systems
Induction motor systems
Primary circuit control
318753, 318786, 318792, H02P 142
Patent
active
059528117
ABSTRACT:
A device for automatically shutting off a current is used in combination with a motor start-up component incorporated in a motor-driving circuit including an auxiliary coil which operates at a start-up time of a motor and a main coil for its steady-state operation. This motor start-up component includes a motor start-up thermistor with positive temperature characteristic having a first electrode and a second electrode, a first connector member having a first male terminal part and connected to the first electrode and a second connector member having a second male terminal part and connected to the second electrode. The motor start-up thermistor is connected in series to the auxiliary coil through the first electrode. The current-shutting device includes first and second terminal members each having a female terminal part for receiving a corresponding one the male terminal parts, a triac having a first triac terminal, a second triac terminal and a gate terminal, a triac-controlling thermistor with positive temperature characteristic and a case which encloses at least the triac and the triac-controlling thermistor.
REFERENCES:
patent: 3643142 (1972-02-01), McBride Jr.
patent: 3671830 (1972-06-01), Kruper
patent: 3832612 (1974-08-01), Woods
patent: 3852648 (1974-12-01), Barry et al.
patent: 3855509 (1974-12-01), Wright
patent: 3864844 (1975-02-01), Heidtmann
patent: 4276506 (1981-06-01), Little
patent: 5617001 (1997-04-01), Nacewicz et al.
patent: 5757162 (1998-05-01), Weber
Patent Abstract of Japan: Publication No. 08251959; Date of Publication of Application Sep. 27, 1996.
Martin David
Murata Manufacturing Co. Ltd.
LandOfFree
Device for shutting off current through a motor start-up circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for shutting off current through a motor start-up circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for shutting off current through a motor start-up circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1513168