| |
 |
|
Class Information
Number: 361/29
Name: Electricity: electrical systems and devices > Safety and protection of systems and devices > Motor protective condition responsive circuits > With time delay > During energization of motor
Description: Subject matter wherein time delay means are provided for maintaining the protective circuit in an off condition during normal start-up.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7602594 |
Motor control apparatus and motor control method |
Oct. 13, 2009 |
| 7518837 |
Control device for soft starting and protecting overload of motor |
Apr. 14, 2009 |
| 7501785 |
Starting system for a single-phase induction motor |
Mar. 10, 2009 |
| 7446491 |
Intelligent power management for actuators |
Nov. 4, 2008 |
| 7265954 |
Method for estimating DC motor coil temperature, DC motor control method and their devices |
Sep. 4, 2007 |
| 7245198 |
Motor start relay and an electric compressor using same |
Jul. 17, 2007 |
| 7107957 |
Protected control apparatus |
Sep. 19, 2006 |
| 7038895 |
Apparatus for detecting abnormality of relay |
May. 2, 2006 |
| 7005827 |
Starting circuit for single-phase induction motor |
Feb. 28, 2006 |
| 6946967 |
Protective device for an electric motor with sensor and evaluation unit |
Sep. 20, 2005 |
| 6590752 |
Electronic control device |
Jul. 8, 2003 |
| 6456034 |
Device for controlling the power supply of an electric starter motor of a motor vehicle and a starter unit containing such a device |
Sep. 24, 2002 |
| 6331821 |
Combination current sensor and relay |
Dec. 18, 2001 |
| 6327124 |
Low current ground fault relay |
Dec. 4, 2001 |
| 6252752 |
Overload protection apparatus and a speed reducer having such an apparatus |
Jun. 26, 2001 |
| 6150792 |
Phase monitor |
Nov. 21, 2000 |
| 5867357 |
Dynamic protection circuit for a motor type load |
Feb. 2, 1999 |
| 5847915 |
Static isolator |
Dec. 8, 1998 |
| 5796565 |
Apparatus and method for starting and protecting a three-phase motor |
Aug. 18, 1998 |
| 5719732 |
Overload protecting device |
Feb. 17, 1998 |
| 5675896 |
Portable electric working machine |
Oct. 14, 1997 |
| 5535082 |
Turn-on control circuit for electric devices |
Jul. 9, 1996 |
| 5491978 |
Electronically commutated motor for driving a compressor |
Feb. 20, 1996 |
| 5428493 |
Motor starting relay device having PTC thermistors |
Jun. 27, 1995 |
| 5418675 |
Protection system for AC generators |
May. 23, 1995 |
| 5339014 |
Apparatus for safety monitoring in protective arrangements with normal and enhanced safety of machinery performing multiple-axis rotations |
Aug. 16, 1994 |
| 5337206 |
Three phase power monitor |
Aug. 9, 1994 |
| 5260634 |
Constant current driving system for a stepper motor in rotating disk |
Nov. 9, 1993 |
| 5206776 |
Protection system for ac generators |
Apr. 27, 1993 |
| 5189388 |
Oil well pump start-up alarm |
Feb. 23, 1993 |
| 4991049 |
Anti-short-cycle circuit |
Feb. 5, 1991 |
| 4939909 |
Control apparatus for air conditioner |
Jul. 10, 1990 |
| 4933799 |
Highly efficient over current circuit breaker |
Jun. 12, 1990 |
| 4933800 |
Motor overload detection with predetermined rotation reversal |
Jun. 12, 1990 |
| 4906857 |
Electronic starting motor control having fail safe and overvoltage protection |
Mar. 6, 1990 |
| 4858053 |
Operational amplifier having an improved feedback system including an integrator having a hurry-up circuit, and an electric motor control using the same for inverse trip selection |
Aug. 15, 1989 |
| 4772977 |
System for protection of electrical machines against damage from residual voltage effects |
Sep. 20, 1988 |
| 4722019 |
Protection methods and systems for refrigeration systems suitable for a variety of different models |
Jan. 26, 1988 |
| 4722018 |
Blocked condenser airflow protection for refrigeration systems |
Jan. 26, 1988 |
| 4713717 |
Protected refrigerator compressor motor systems and motor protectors |
Dec. 15, 1987 |
| 4713718 |
Microprocessor based motor protective relay with maximum number of starts per time interval limiter |
Dec. 15, 1987 |
| 4710841 |
System for production of induction machines against damage from residual voltage effects |
Dec. 1, 1987 |
| 4701824 |
Protected refrigerator compressor motor systems and motor protectors therefor |
Oct. 20, 1987 |
| 4680512 |
Fault protection apparatus for traction motor circuit |
Jul. 14, 1987 |
| 4674344 |
Engine starter |
Jun. 23, 1987 |
| 4653285 |
Self-calibrating control methods and systems for refrigeration systems |
Mar. 31, 1987 |
| 4583836 |
Abnormal condition detection device for corona discharger in electrophotographic copying machine |
Apr. 22, 1986 |
| 4547720 |
Induction motor start-stall detection apparatus and method |
Oct. 15, 1985 |
| 4509088 |
Motor protector relay with memory of overload |
Apr. 2, 1985 |
| 4502287 |
Refrigeration system alarm device |
Mar. 5, 1985 |
|
|
|
