Short circuit protection apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 2, 1985
Grant Date -
N/A
app pub date -
Jan 5, 1983
filing date -
Jan 5, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus (10) for controlling the supply of power from a power source (12) to a motor (14,14'). The apparatus (10) has a controllable switch (20,20') for coupling power to the motor (14,14') responsive to a pulse train, a circuit (22,22') for converting the voltage applied to the motor (14,14') to a logic signal, a line contactor (26) for connecting and disconnecting the power source (12) to and from the motor (14,14'), and a microprocessor (60) for generating the pulse train and controlling the line contactor (26) to disconnect and connect the power source (12) from and to the motor (14,14') in response to the presence and absence of the logic signal, respectively. By sensing short circuits and discontinuing the supply of power in response to the short circuit, a runaway motor speed condition can be avoided, and by using a microprocessor, the present invention is highly reliable, fast, durable, and cost-effective.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully