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Class Information
Number: 318/458
Name: Electricity: motive power systems > Automatic and/or with time-delay means (e.g., automatic starting and/or stopping) > Rate-of-change of a condition > Electrical condition
Description: Subject matter in which the sensing means is responsive to the rate-of-change of an electrical condition.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7372226 |
Method for switching off a power tool |
May. 13, 2008 |
| 6515441 |
Glass edge object detection sensor |
Feb. 4, 2003 |
| 6225769 |
Device for operating an electric motor |
May. 1, 2001 |
| 5854546 |
Suppression of radio frequency emissions |
Dec. 29, 1998 |
| 5774625 |
Arrangement for monitoring the rotational speed of a rotary-anode drive motor of x-ray |
Jun. 30, 1998 |
| 5712551 |
Starting circuit protection apparatus and method for brushless DC motor compressor |
Jan. 27, 1998 |
| 5016133 |
Apparatus for flicker protection when a servo-motor starts |
May. 14, 1991 |
| 4675586 |
Monitoring circuit for a door operating D.C. electric motor |
Jun. 23, 1987 |
| 4468597 |
Method for regulating the power supply to a direct-current motor and a device for the application of said method |
Aug. 28, 1984 |
| 4305028 |
System for evaluating the capability of a work-performing robot to reproduce a programmed series of motions |
Dec. 8, 1981 |
| 4274040 |
Solenoid torquer system |
Jun. 16, 1981 |
| 4249117 |
Anti-kickback power tool control |
Feb. 3, 1981 |
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