Electricity: motive power systems – Motor load – armature current or force control during...
Patent
1994-03-30
1995-09-12
Ro, Bentsu
Electricity: motive power systems
Motor load, armature current or force control during...
318482, 15319, H02P 116
Patent
active
054499887
ABSTRACT:
A soft start power control device for a liquid vacuum motor includes a detection component for shutting off the vacuum motor when the vacuum's recovery tank reach full capacity, and in-rush current limiting component for restraining the in-rush current to the motor when the power is switched on, whereby the motor slowly ramps up to its operating speed. The motor is switch by a triac. The device includes a component for preventing the triac from inadvertently triggering at commutation frequency. A snubber circuit is also connected in parallel with the triac to limit the dv/dt characteristic. The detection component includes a float switch to monitor the level of liquid in the recovery tank. The detection component disables the motor once the water reaches a predetermined high level, which then requires the operator to empty the recovery tank before restarting the motor.
REFERENCES:
patent: 4993104 (1991-02-01), Kasper et al.
patent: 5234319 (1993-08-01), Wilder
Gurstein Russell
Westlake Richard
Ro Bentsu
U.S. Products Inc.
LandOfFree
Vacuum motor control including float switch and in-rush current does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vacuum motor control including float switch and in-rush current , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum motor control including float switch and in-rush current will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-407683