Switching circuit for supervising the degree of wear of commutat

Details Switching circuit for supervising the degree of wear of commutat Switching circuit for supervising the degree of wear of commutat

1983-03-17

1985-09-17

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

310245, 340 52D, 340679, G08B 2100

Patent

active

045423741

ABSTRACT:
In a circuit for supervising the wear of carbon brushes making normally contact with a commutator of a direct-current electric motor of an electrically operated vehicle powered by an accumulator, and which includes main on-off switch for starting and stopping the vehicle, electrically insulated control brushes carried by the carbon brushes, and movable therewith, and a warning signal indicator normally connected to the control brushes, which provides a selectable optical and acoustic warning signal when the control brushes establish contact with the commutator upon a predetermined degree of wear of the carbon brushes, the improvement includes an electrical memory which has set and reset inputs, is connected to the control brushes, and controls the warning signal indicator. The control brushes set the memory upon establishing contact with the commutator. A switching device switches the warning signal indicator into, and out of the circuit, and the memory, upon being set, automatically actuates the switching device for switching the warning signal indicator into the circuit, independently of the establishment of the contact of the control brushes with the commutator; the memory is reset upon actuation of the main on-off switch.

REFERENCES:
patent: 3609429 (1971-09-01), Thompson
patent: 4024525 (1977-05-01), Baumgartner et al.
patent: 4316186 (1982-02-01), Purdy et al.

Affiliated with

Also associated with

Rating

Switching circuit for supervising the degree of wear of commutat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switching circuit for supervising the degree of wear of commutat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching circuit for supervising the degree of wear of commutat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-372197