Title: Scrubbing torque monitoring and control system

Abstract: An electronic circuit measures the torque of a motor used to drive rotatable brushes, which may be used to clean the surfaces of flat articles, such as printed circuit boards. The circuit measures the torque by determining the average power consumed by the motor. The measured torque provides the operator of the system with an indication as to whether the brushes are spaced for proper impingement upon the article being scrubbed. The invention also comprises a servomechanism which provides for automatic and continuous readjustment of the position of the brushes, relative to the flat articles, in accordance with changing motor load conditions. The invention may be used to regulate the torque of a motor which is used in many other applications.

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Inventors: Curcio, Joseph J. (State College, PA)

Application Number: 06/235512
Filing Date: 1981-02-18
Publication_date: 1983-05-10
Assignee: CHEMCUT CORP

Primary Class(es): 15/77 15/88.300, 318/39
Other Classes: B23Q15/12; B23Q15/007; A46B13/02
US Patent Ref:

3662418	May, 1972	Kamiya	15/53A	VEHICLE WASHING APPARATUS
3748789	July, 1973	Wada	511/659	GRINDING MACHINE
3795931	March, 1974	Martino	15/77	QUICK-CHANGE BRUSH MOUNTING
3819991	June, 1974	Weigele et al.	318/39	CONTROL DEVICE FOR A POSITION SELECTIVE MOTOR-DRIVEN WORK BRUSH
4052648	October, 1977	Nola	Power factor control system for AC induction motors
4137677	February, 1979	Nedreski	511/659.2	Constant horsepower control for grinding wheel drives
4249113	February, 1981	Werner	318/39	Load controller

Other Refs: GB371019GB1141947GB1384710

April, 1932
February, 1969
February, 1975

Primary Examiner: Roberts, Edward L.
Assistant Examiner:
Attorney: Paul & Paul

Claims:

What is claimed