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Class 451/915 - ABRADING WHEEL SPEED CONTROL


Subclass of Class 451 - Abrading
Definition: Disclosure of regulating the rotational velocity of a grinding
No. of patents: 3
Last issue date: 11/18/1986


NumberTitleIssue Date
4622779Method and apparatus for speed control of a grinder
A signal representative of the mass moment of inertia of a grinding wheel and its drive motor is integrated for a fixed time interval during start-up of the motor beginning when the motor speed or the motor current has reached a predetermined small value,...
11/18/1986
4384432Grinding machine
A device for automatically limiting the steplessly adjustable speed of a drive motor for the spindle of a grinding machine to a speed which is the maximum permissible motor speed for the grinding wheel currently being used has a motor-driven speed regulat...
05/24/1983
3935677Metallographic polisher with speed control
A metallographic polisher includes a control circuit for providing a selectable constant speed for the polisher under varying load conditions. A tachometer provides electrical signals representative of the speed of rotation of a polishing wheel, which sig...
02/03/1976
 
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