Power tool and motor controller

Details Power tool and motor controller Power tool and motor controller

2007-10-16

2008-09-02

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Motor-reversing

C318S281000, C318S282000, C318S286000, C222S063000, C222S390000, C222S251000, C222S333000, C222S343000

Reexamination Certificate

active

07420341

ABSTRACT:
A method and apparatus to automatically reverse the motor of a power tool, such as a dispensing gun or similar tool. In some constructions, a controller automatically reverses the direction of plunger movement and removes the plunger from contact with the back wall of a cartridge. The controller has a trigger switch that is coupled to a power source, such as a battery, and includes a main power on/off switch and a potentiometer. A protection or secondary switch is coupled in parallel to the main power on/off switch. A power supply circuit and a commutator are each coupled to the main and secondary switches. An overload sensor is coupled to the commutator. The controller includes a programmable device that is coupled to the power supply circuit, the potentiometer, the commutator, and the overload sensor. The programmable device is operable to sense actuation and deactuation of the main power on/off switch, read an electromotive force from the potentiometer, and, upon sensing deactuation of the main switch, send a control signal to the commutator to reverse current flow therethrough for a predetermined amount of time, and deactuate the secondary switch when the predetermined time has lapsed.

REFERENCES:
patent: 3604597 (1971-09-01), Pohl et al.
patent: 3699411 (1972-10-01), Miller
patent: 3839791 (1974-10-01), Feamster, III
patent: 3984033 (1976-10-01), Groth et al.
patent: 4024994 (1977-05-01), Davis, Jr.
patent: 4085508 (1978-04-01), Gyongyosi
patent: 4223744 (1980-09-01), Lovingood
patent: 4249117 (1981-02-01), Leukhardt et al.
patent: 4348603 (1982-09-01), Huber
patent: 4412158 (1983-10-01), Jefferson et al.
patent: 4463293 (1984-07-01), Hornung et al.
patent: 4550277 (1985-10-01), Carney
patent: 4615469 (1986-10-01), Kishi et al.
patent: 4628233 (1986-12-01), Bradus
patent: 4676403 (1987-06-01), Goudy, Jr. et al.
patent: 4680513 (1987-07-01), Kennedy
patent: 4754669 (1988-07-01), Verdier et al.
patent: 4762038 (1988-08-01), Olson
patent: 4769911 (1988-09-01), Araki
patent: 4802278 (1989-02-01), Vanderpol et al.
patent: 4922161 (1990-05-01), Gilland
patent: 4939964 (1990-07-01), Ricci
patent: 4949605 (1990-08-01), Geller et al.
patent: 4953292 (1990-09-01), Tobey
patent: RE33379 (1990-10-01), Bradus
patent: 5138243 (1992-08-01), Kress et al.
patent: 5294874 (1994-03-01), Hessenberger et al.
patent: 5341958 (1994-08-01), Bayat et al.
patent: 5343382 (1994-08-01), Hale et al.
patent: 5357179 (1994-10-01), Abbagnaro et al.
patent: 5388749 (1995-02-01), Davignon et al.
patent: 5471122 (1995-11-01), Bilotti et al.
patent: 5495672 (1996-03-01), Kritchever et al.
patent: 5556009 (1996-09-01), Motzko
patent: 5594306 (1997-01-01), Caporusso et al.
patent: 5657417 (1997-08-01), Di Troia
patent: 5672155 (1997-09-01), Riley et al.
patent: 5672922 (1997-09-01), Raichle et al.
patent: 5747953 (1998-05-01), Philipp
patent: 5762239 (1998-06-01), Cossette
patent: 5775539 (1998-07-01), Bates et al.
patent: 5836079 (1998-11-01), Cronin et al.
patent: 5909830 (1999-06-01), Bates et al.
patent: 5913370 (1999-06-01), Chapelle et al.
patent: 5918685 (1999-07-01), Ulbrich et al.
patent: 5943778 (1999-08-01), Alana
patent: 5964378 (1999-10-01), Sperry et al.
patent: 6013911 (2000-01-01), Hibbard et al.
patent: 6013991 (2000-01-01), Philipp
patent: 6042262 (2000-03-01), Hajianpour
patent: 6065212 (2000-05-01), Lazarevic
patent: 6114826 (2000-09-01), Nishiura et al.
patent: 6182535 (2001-02-01), Phillips
patent: 6189216 (2001-02-01), Dureiko
patent: 6236177 (2001-05-01), Zick et al.
patent: 6318874 (2001-11-01), Matsunaga
patent: 6392373 (2002-05-01), Glasgow et al.
patent: 6540113 (2003-04-01), Gardos
patent: 6823134 (2004-11-01), Glasgow et al.
patent: 7116071 (2006-10-01), Glasgow et al.

Affiliated with

Also associated with

Rating

Power tool and motor controller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power tool and motor controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power tool and motor controller will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3976540